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914World.com _ 914World Garage _ New Project

Posted by: pek771 Aug 21 2021, 07:01 PM

Hello all
New project. 1970, no rust other than surface rust from 38 years in the Arizona desert.
I am going to convert it to electric.

This is an upload test:

Attached Image

Posted by: roblav1 Aug 21 2021, 08:22 PM

Electric!!?? What for?

Posted by: Mayne Aug 22 2021, 09:09 AM

Should be interesting. I found some car show about a company in Europe that converts classic cars to electric and on the episode I saw, they did a 914. I believe they used a Tesla motor. Anyone know the show I’m talking about? I can’t remember what it was called.

Anyway, would look forward to some documentation on your approach. Good luck!

Posted by: KSCarrera Aug 22 2021, 09:15 AM

QUOTE(Mayne @ Aug 22 2021, 04:09 PM) *

Should be interesting. I found some car show about a company in Europe that converts classic cars to electric and on the episode I saw, they did a 914. I believe they used a Tesla motor. Anyone know the show I’m talking about? I can’t remember what it was called.

Anyway, would look forward to some documentation on your approach. Good luck!

It's called Vintage Volts – a series about wrecking classic cars by stealing their souls...

Posted by: arbitrary Aug 22 2021, 09:33 AM

Some photos of that particular 914 EV at https://www.instagram.com/classicretrofit/

Posted by: 914e Aug 22 2021, 09:51 AM

QUOTE(pek771 @ Aug 21 2021, 06:01 PM) *

Hello all
New project. 1970, no rust other than surface rust from 38 years in the Arizona desert.
I am going to convert it to electric.

This is an upload test:

Attached Image


What motor and batteries are you planning on using?

Posted by: dirk2056 Aug 22 2021, 10:15 AM

I would like to more about the VW pick-up in foreground that looks like a project.

Posted by: 9146C Aug 22 2021, 10:47 AM

Looks like you have a great starting point for your build!

I'll be watching the progress on this one.

Good luck and keep the group posted!

Posted by: pek771 Aug 22 2021, 11:15 AM

QUOTE(roblav1 @ Aug 21 2021, 10:22 PM) *

Electric!!?? What for?


Gasoline engines are like 25% efficient. I don't feel like dealing with a gasoline engine any longer. Electric is the future. Electric motors have instantaneous power. Quiet also.
Also, I wanted an electric car, and the 914 is a perfect conversion vehicle.

Posted by: trojanhorsepower Aug 22 2021, 11:33 AM

Cool. Should be a cool build. Please try to keep track of the minutia since these are the little challenges that tend to get overlooked in a build. The big stuff is usually easy to find, but what brackets you made or places you had to cut etc. would be very helpful for the next person.

Posted by: Chris914n6 Aug 22 2021, 02:32 PM

Interesting article on the realities of the EV movement 8/22/21

https://techcrunch.com/2021/08/22/the-tough-calculus-of-emissions-and-the-future-of-evs/

Personally I wouldn't convert a 50 year old Porsche that's increasing in value as is. There are much better newer commuter vehicles to choose from.

The 914 was built as light as possible using the thinnest sheet metal possible. Putting heavy batteries in places it wasn't designed for stresses the chassis. I've seen the cracks. Calling a 914 the perfect donor is a naive lie.

Or swap to a Subaru with a cat and be as clean as a new car without the pitfalls and costs of EV.

Posted by: emerygt350 Aug 22 2021, 03:26 PM

Keep good notes and post them here. I am pretty sure I will go the same way eventually.

Posted by: Front yard mechanic Aug 22 2021, 06:06 PM

QUOTE(Chris914n6 @ Aug 22 2021, 12:32 PM) *

Interesting article on the realities of the EV movement 8/22/21

https://techcrunch.com/2021/08/22/the-tough-calculus-of-emissions-and-the-future-of-evs/

Personally I wouldn't convert a 50 year old Porsche that's increasing in value as is. There are much better newer commuter vehicles to choose from.

The 914 was built as light as possible using the thinnest sheet metal possible. Putting heavy batteries in places it wasn't designed for stresses the chassis. I've seen the cracks. Calling a 914 the perfect donor is a naive lie.

Or swap to a Subaru with a cat and be as clean as a new car without the pitfalls and costs of EV.

excellent article chowtime.gif

Posted by: blabla914 Aug 22 2021, 06:11 PM

So nobody else is going to comment on the split window single cab?

what's the story on that?

Posted by: 914sgofast2 Aug 22 2021, 06:17 PM

QUOTE(pek771 @ Aug 21 2021, 06:01 PM) *

Hello all
New project. 1970, no rust other than surface rust from 38 years in the Arizona desert.
I am going to convert it to electric.

This is an upload test:

Attached Image


Are you gonna drop one of those new Ford electric crate motors in it?

Posted by: mb911 Aug 22 2021, 06:44 PM

Pat are you the Pat that did BAE kit on your SC years ago on the bird board?


Posted by: pek771 Aug 22 2021, 08:57 PM

QUOTE(mb911 @ Aug 22 2021, 08:44 PM) *

Pat are you the Pat that did BAE kit on your SC years ago on the bird board?


Yup Ben, that's me. My wife said she knew exactly where I was on the track at Watkins Glen from the sound of my 3" M&K muffler!

I an selling that tub, BTW.


Posted by: 914e Aug 23 2021, 07:27 AM

QUOTE(914sgofast2 @ Aug 22 2021, 05:17 PM) *


Are you gonna drop one of those new Ford electric crate motors in it?


If spend you that kind of money you might as well put a Taycan motor in it and keep it Porsche. Of course it would require a whole lot of engineering to transplant. I give the conversion people in England about two years to figure that out. That is where I much of the bolt in swaps being engineered.

Posted by: Literati914 Aug 23 2021, 07:54 AM

Congratulations on the new project, looks like a great start..especially being a desert car. I like the early cars - did the seller mention why it has a later front bumper?


.

Posted by: 914e Aug 23 2021, 08:24 AM

QUOTE(Literati914 @ Aug 23 2021, 06:54 AM) *

Congratulations on the new project, looks like a great start..especially being a desert car. I like the early cars - did the seller mention why it has a later front bumper?


.


I thought they had those bumper guards even in 1970.

Posted by: Jett Aug 23 2021, 08:32 AM

QUOTE(914e @ Aug 23 2021, 07:24 AM) *

QUOTE(Literati914 @ Aug 23 2021, 06:54 AM) *

Congratulations on the new project, looks like a great start..especially being a desert car. I like the early cars - did the seller mention why it has a later front bumper?


.


I thought they had those bumper guards even in 1970.

Introduced front bumper guards in 1973 and rear in 1974 IIRC

Posted by: pek771 Aug 23 2021, 11:33 AM

Well, it had these bumpers on it. There was a pile of bumpers there, and I took these as being the nicest. I don't care about period correctness. I Actually have no idea what should be on it. I do need to find some better seats, and some fiberglass to replace the front and rear lids.

Posted by: 914e Aug 23 2021, 11:41 AM

QUOTE(pek771 @ Aug 23 2021, 10:33 AM) *

Well, it had these bumpers on it. There was a pile of bumpers there, and I took these as being the nicest. I don't care about period correctness. I Actually have no idea what should be on it. I do need to find some better seats, and some fiberglass to replace the front and rear lids.


I think 914 Rubber is still working on improved fiberglass and carbon fiber lids. Is there more piles of 914 parts where you picked this one up?

Posted by: mb911 Aug 23 2021, 12:06 PM

QUOTE(pek771 @ Aug 22 2021, 06:57 PM) *

QUOTE(mb911 @ Aug 22 2021, 08:44 PM) *

Pat are you the Pat that did BAE kit on your SC years ago on the bird board?


Yup Ben, that's me. My wife said she knew exactly where I was on the track at Watkins Glen from the sound of my 3" M&K muffler!

I an selling that tub, BTW.



Wow very cool. Let me know if you need any cool parts for your build even if you want to just hang a muffler on the back to look like a "poser" gas guy.

Posted by: sechszylinder Aug 24 2021, 05:03 AM

QUOTE(pek771 @ Aug 22 2021, 09:15 AM) *

QUOTE(roblav1 @ Aug 21 2021, 10:22 PM) *

Electric!!?? What for?


Gasoline engines are like 25% efficient. I don't feel like dealing with a gasoline engine any longer. Electric is the future. Electric motors have instantaneous power. Quiet also.
Also, I wanted an electric car, and the 914 is a perfect conversion vehicle.

A 914 is a car from the past and yes it has a ICE. Thats what its made for.
If you you like something for the future, go out and buy a Tesla, or something from Germany, which will be available in big numbers in the near future. BTW , the Tesla Roadster is in the meantime as well an oldtimer.
But please , do not convert that poor car to an electic drive train barf.gif

BR

Benno smilie_flagge6.gif

Posted by: Arno914 Aug 24 2021, 06:03 AM

agree.gif

Don´t convert a 914 into a "coal driven" vehicle.


QUOTE
Electric is the future


...only if we go nuclear... dry.gif

Posted by: jd74914 Aug 24 2021, 10:53 AM

Give the guy a break-for those on the anti-coal train (understandable, though modern gasified coal burning is really quite clean), Florida is primarily NG power generation with lots of solar coming on in the next years.


Looking forward to seeing more of this project!!

Posted by: mb911 Aug 24 2021, 11:10 AM

Pats a good guy don't give him a hard time.

Posted by: bbrock Aug 24 2021, 12:26 PM

Still cracks me up how we applaud stuffing all kinds of crazy power plants into these cars but somehow EV is where the line is crossed. confused24.gif

Posted by: mepstein Aug 24 2021, 12:52 PM

I’m all for this project beerchug.gif

I would like an electric 914 with a really light battery pack. 50 mile range would be enough for me. driving.gif

Posted by: sechszylinder Aug 25 2021, 12:29 AM

QUOTE(bbrock @ Aug 24 2021, 10:26 AM) *

Still cracks me up how we applaud stuffing all kinds of crazy power plants into these cars but somehow EV is where the line is crossed. confused24.gif

Basically I‘m a big fan of keeping the original power plant in the car, with the exception of engines that have been used by the factory e.g. 4 to 6 zyl. boxer. This does no include any kind of v8 big blocks or similar.
But anyways, it is his car. He can do whatever he likes to do with it. Even converting a sports car to something which offers the performance of a golf cart.

my 2 cents …

Benno

Posted by: sechszylinder Aug 25 2021, 12:40 AM

QUOTE(mepstein @ Aug 24 2021, 10:52 AM) *

I’m all for this project beerchug.gif

I would like an electric 914 with a really light battery pack. 50 mile range would be enough for me. driving.gif

yes sure, if there would be a light battery , which offers the energy to drive this car like a sports car.
If you make the math behind this, you will see, that only the battery will be 10 times the wheight of a full gasoline tank.
It’s no coincidence that cars like Tesla and others are heavy like tanks.
Even with a 50 mile range, that car would have the driving performance of a golf cart.
Maybe someone can shime in and enlight us with the numbers of the factory permitted additional wheight of our little sports car.
BR
Benno

Posted by: Arno914 Aug 25 2021, 12:59 AM

QUOTE
A lithium-ion battery pack has about 0.3 MJ/kg and about 0.4 MJ/liter (Chevy VOLT). Gasoline thus has about 100 times the energy density of a lithium-ion battery. ... Powering a car with electricity is considerably more efficient than powering a car with gasoline in terms of primary-energy consumption.

Posted by: Chris914n6 Aug 25 2021, 03:32 AM

QUOTE(Arno914 @ Aug 24 2021, 11:59 PM) *

QUOTE
A lithium-ion battery pack has about 0.3 MJ/kg and about 0.4 MJ/liter (Chevy VOLT). Gasoline thus has about 100 times the energy density of a lithium-ion battery. ... Powering a car with electricity is considerably more efficient than powering a car with gasoline in terms of primary-energy consumption.


https://en.wikipedia.org/wiki/Tesla_Model_3

353 miles (568 km) Long Range AWD/Long Range Performance AWD

The Long Range version carries 4,416 cells arranged in 96 groups of 46, and weighs 1,060 pounds (480 kg) in a 0.40 m³ volume; a density of 150 Wh/kg.

So for the same miles (200hp -6) it will weigh roughly 700lbs more and need at least 11270 in^3 just in batteries.

That's kinda like doing a sbc swap and then storing another sbc in the frunk.

Want a fun EV, Nissan Leaf widebody

IPB Image

Posted by: sechszylinder Aug 25 2021, 03:54 AM

QUOTE(Chris914n6 @ Aug 25 2021, 01:32 AM) *


So for the same miles (200hp -6) it will weigh roughly 700lbs more and need at least 11270 in^3 just in batteries.

That's kinda like doing a sbc swap and then storing another sbc in the frunk.


thanks for the numbers!

Imagine that, the 914 features an empty wheight of about 2000 lbs (ICE) and your going to put a battery of about 700 lbs in that car minus the wheight of the old engine plus that of the electric drive train.

What a nonsense…. barf.gif

Posted by: 930cabman Aug 25 2021, 05:02 AM

QUOTE(mepstein @ Aug 24 2021, 12:52 PM) *

I’m all for this project beerchug.gif

I would like an electric 914 with a really light battery pack. 50 mile range would be enough for me. driving.gif


Agreed, being lightweight is what makes a 914 what it is. My concern would be the added weight and how it will change the character of the car.

Posted by: bbrock Aug 25 2021, 07:57 AM

I don't see where the OP stated they expect the same kind of range as a Tesla or OE ICE engine. Let's also remember that it takes about 103 lbs. of gasoline to provide an ICE 914 with its full range. That needs to be added to the math. Half the range and half the battery weight would make for a fun and useful car. The https://www.classicretrofit.com/blogs/news/classic-retrofit-porsche-914-ev-conversion-on-vintage-voltage is shooting for 150 mile range.

Posted by: mb911 Aug 25 2021, 08:06 AM

Just a reminder here is that we (914world.com) are not being very welcoming to Pat. Pat was just looking to share his ideas not looking for immediate feedback. He was just sharing

Posted by: VaccaRabite Aug 25 2021, 01:06 PM

You guys are being dicks. Seriously, knock it off.

Keep it up and there will be Time Outs passed around like party favors. headbang.gif

ALL 914s with ALL drivetrains are welcome here. If you have a problem with it, just don't post. Post in the threads with drivetrains that you approve of.

Taking off the Admin hat....

This is really cool and I'm looking forward to watt you are going to do with this car!

Zach

Posted by: mepstein Aug 25 2021, 02:04 PM

There’s an electric conversion by one of our members here that lives close by to me. The car looks great and he drives it to work. Getting a 914 back on the road is a good thing, no matter what’s under the hood.

Posted by: mb911 Aug 25 2021, 03:07 PM

QUOTE(VaccaRabite @ Aug 25 2021, 11:06 AM) *

You guys are being dicks. Seriously, knock it off.

Keep it up and there will be Time Outs passed around like party favors. headbang.gif

ALL 914s with ALL drivetrains are welcome here. If you have a problem with it, just don't post. Post in the threads with drivetrains that you approve of.

Taking off the Admin hat....

This is really cool and I'm looking forward to watt you are going to do with this car!

Zach



Thanks Zach

Posted by: Optimusglen Aug 25 2021, 03:23 PM

Whether we like it or not electric cars are the future, the sooner we all come to terms with it the better off we'll be. I imagine it will be like when people transitioned from horse/buggy to automobiles. Some day those of us who cling to ICE classic automobiles will be in the same boat that modern horse enthusiasts are in.

Excited to see the project progress.

Posted by: 76-914 Aug 25 2021, 03:45 PM

Wasn't it Henry Ford who said, "If I'd asked people what they wanted they'd have said faster horses"! Electric is an improvement that will be refined plus you will have a back up emergency power plant in your garage should the electricity conk out. beerchug.gif

Posted by: 914e Aug 26 2021, 02:09 PM

After a minor modification,

Attached Image

My car goes VROOOOOOOOOM again after 24 years.

Posted by: Chris914n6 Aug 26 2021, 04:04 PM

QUOTE(Optimusglen @ Aug 25 2021, 02:23 PM) *

Whether we like it or not electric cars are the future

So you haven't read the part where there is not enough minerals on Earth to replace even half of the 1,000,000,000 ICE cars currently in use around the world. Which btw is only 4% of global carbon emissions. Electric cars are not going to save the world, but it might make your city air cleaner.

Posted by: siverson Aug 26 2021, 04:20 PM

QUOTE(mepstein @ Aug 24 2021, 11:52 AM) *

I’m all for this project beerchug.gif

I would like an electric 914 with a really light battery pack. 50 mile range would be enough for me. driving.gif


Me too! I'd like to have a six conversion, nice orig 4-cyl, and an electric 914. EV West right by my house has a ton of experience with these.

Somewhat related, I think the new Tesla Model S Plaid is really going to redefine sports cars and what it means to be a sports car or "a car for drivers". 0-60 in 2.0 seconds. The fastest production car ever of anything and it has 4 doors. What is the point of going even faster? A $200k top of the line 911 is slower than this much cheaper sedan. But is it as fun to drive? No.

Good luck with the project!

-Steve


Posted by: pek771 Aug 26 2021, 06:42 PM

So, I'm thinking about batteries. Tesla has the laptop batteries in the frame, so the 1100# battery package is pretty low. I don't think we can approximate the weight/CG of a Tesla Model S with a converted 914. However, If I get some fiberglass deck lids, and limit the batteries to around 600#, I should be approximating the stock weight distribution. I don't know where the CG lies in a vertical plane on a 914. It would be great if someone has this info. I can only speculate that the handling will be adversely affected if the battery weight is higher up in the car. I believe an AC-50 motor is around 120#. I will still have the 914 transmission (we do like to shift, after all). Likely only need 2nd and 3rd. The AC induction motors torque up pretty well at low RPM with the proper controller.

I need to probably change the springs in the rear, possibly some bigger torsion bars in the front. I may be able to sneak a couple of battery modules into the engine bay.

So, it looks like the first order of business is to do an analysis of the weight distribution. We want the 914 to come out of the corners like a rocket, which ain't happening with a Type 4 VW engine.

BTW, I have a fish scale hanging in the garage, so I can weigh everything in and out. The car was like 1900# on a CAT scale, but a CAT scale is really not that accurate. I had to weight the SUV and the 914 together, and subtract off the weight of the SUV. Must be someone in the area with corner scales.

Posted by: mepstein Aug 26 2021, 07:10 PM

QUOTE(siverson @ Aug 26 2021, 06:20 PM) *

QUOTE(mepstein @ Aug 24 2021, 11:52 AM) *

I’m all for this project beerchug.gif

I would like an electric 914 with a really light battery pack. 50 mile range would be enough for me. driving.gif


Me too! I'd like to have a six conversion, nice orig 4-cyl, and an electric 914. EV West right by my house has a ton of experience with these.

Somewhat related, I think the new Tesla Model S Plaid is really going to redefine sports cars and what it means to be a sports car or "a car for drivers". 0-60 in 2.0 seconds. The fastest production car ever of anything and it has 4 doors. What is the point of going even faster? A $200k top of the line 911 is slower than this much cheaper sedan. But is it as fun to drive? No.

Good luck with the project!

-Steve

A friend of mine has a Taycan. He calls the Tesla a fast electric car and the Taycan a sports car with an electric motor. He has a bunch of other high performance Porsche’s so I get what he’s saying. Fast acceleration is fun but (obviously to 914 owners) doesn’t make a sports car in itself.

Posted by: 914e Aug 26 2021, 11:29 PM

QUOTE(pek771 @ Aug 26 2021, 05:42 PM) *

So, I'm thinking about batteries. Tesla has the laptop batteries in the frame, so the 1100# battery package is pretty low. I don't think we can approximate the weight/CG of a Tesla Model S with a converted 914. However, If I get some fiberglass deck lids, and limit the batteries to around 600#, I should be approximating the stock weight distribution. I don't know where the CG lies in a vertical plane on a 914. It would be great if someone has this info. I can only speculate that the handling will be adversely affected if the battery weight is higher up in the car. I believe an AC-50 motor is around 120#. I will still have the 914 transmission (we do like to shift, after all). Likely only need 2nd and 3rd. The AC induction motors torque up pretty well at low RPM with the proper controller.

I need to probably change the springs in the rear, possibly some bigger torsion bars in the front. I may be able to sneak a couple of battery modules into the engine bay.

So, it looks like the first order of business is to do an analysis of the weight distribution. We want the 914 to come out of the corners like a rocket, which ain't happening with a Type 4 VW engine.

BTW, I have a fish scale hanging in the garage, so I can weigh everything in and out. The car was like 1900# on a CAT scale, but a CAT scale is really not that accurate. I had to weight the SUV and the 914 together, and subtract off the weight of the SUV. Must be someone in the area with corner scales.



@http://www.914world.com/bbs2/index.php?showuser=5175 I Have an AC-34 in our Super Beetle with 4 banks of Chevy Volt batteries. Plenty of power for a bug, first gear is a rocket. Two banks are on place of the gas tank using the gas tank mounting hole to mount the battery box. The rear banks are being the back seat. The car ended up being about 160 pounds heavier than stock most of it ending up in the front. The controller is easy to program and adjust. The down side is the programming is done through a little 2" gauge.

My 914 has a Hyper9 motor with around the HP of a 6 but pushing the torque limits of the 901 and the CV joints. I plan on rebuilding the 901 as soon as it cools off. My 914 was converted 24 years ago and had a 9" DC motor with lead acid batteries by a school for and engineering competition. In the 90's we had EV races with high schools and colleges building cars.
On this one I am again using the Chevy Volt batteries. One bank in the front in place of the gas tank. They had added an aluminum shelf for the old batteries that I cleaned up and reused. I would have not done it they way they did but it was already there.
In the rear I am mounting batteries on both sides of the motor the keep the weigh low and close the same location. I expect the weight to be the same as a 914/6

Attached Image




Posted by: ClayPerrine Aug 30 2021, 09:37 AM

If I ever win the lottery, I am going to the Porsche special wish department with a flared 914 tub and asking them to put a Taycan drive train in it. Then I can show up at Parade and kick all the 911 butts in the AX.

If you look at the Taycan chassis without the body on it, it has a void between the batteries and the rear of the car used for the rear seat footwells. If you remove the void, it looks like it is the same length as a 914.


I think an electric 914 would be fun.

Clay

Posted by: pek771 Oct 10 2021, 11:59 AM

I had the car in storage for a few weeks. I did some measuring and determined I can fit five (5) Tesla 22kW modules in the car handily...three up front and two in back. Also decided that I'm going with a Hyper9 motor, the lower voltage variety, with dual shafts. I have not yet made up my mind about whether to use the extra shaft to drive an AC compressor. I may just go with an electric compressor.

As I am cleaning it up for paint, I have noticed that it must have been hit in front. A new front (bumper) section has been welded in...at least it was a nice job of repair. I am going for a lightweight, so I'm scraping the sound deadener out. I'm thinking I can get under 2000 Lb fairly easily, even with the 290 lb of batteries. It should come out of corners like a rocket.

Posted by: mepstein Oct 10 2021, 01:26 PM

Here's a list I made one day while waiting for a plane to take off. It’s not inclusive or accurate but may give you some ideas. Dropping 300lbs and adding an additional 600lbs for batteries will probably end you up in the weight range of a big six with much better weight distribution than all the guys putting big sixes in the back of their early 911’s.


10 - Firewall pad
10 - floor tar
60 - lids
10 - engine lid
5 - rockers
20 - glass bumpers
20 - targa top
5 - carpet
15 - exhaust
10 - Backpad
20 - air control
5 - door hardware
185
10 - Seat sliders
5 - interior padding
20 - headlights
10 - steel crossbar
10 - Heat flappers & lever
30 - battery and
5 - battery tray
265
20- Headers

310

Pedal board
Targa latches
Vent window & trim
Shortened sub dash
Sun visors
Glove box & ashtray
Trunk locks F & R
Glove box lock
Windshield wipers
Windshield washer
Trunk heat shield ?
Brake caliper shields
Radio & speakers
Engine lid latch & cable
Front trunk latch & cable
Front carpet board
Spare tire
Center tunnel covers
Shift knob
Antenna
Door cards
Door pocket



Posted by: Shivers Oct 10 2021, 02:17 PM

I watched a documentary where the scientists had a drone in flight, had some kind of malfunction and it hit the earth. Wasn't that high up. The battery burst into flames upon impact. And not just a small fire, the dirt was frozen so two guys grabbed a big rock and started smashing the battery pack that didn't want to go out. Tesla may have crash zones for this reason, if they don't they should. Are you going to use some type of fire suppression system? Cool project

Posted by: windforfun Oct 10 2021, 04:20 PM

QUOTE(Shivers @ Oct 10 2021, 01:17 PM) *

I watched a documentary where the scientists had a drone in flight, had some kind of malfunction and it hit the earth. Wasn't that high up. The battery burst into flames upon impact. And not just a small fire, the dirt was frozen so two guys grabbed a big rock and started smashing the battery pack that didn't want to go out. Tesla may have crash zones for this reason, if they don't they should. Are you going to use some type of fire suppression system? Cool project


So maybe batteries aren't really any safer than gasoline. Lithium ion & lead acid...

beer3.gif beer3.gif beer3.gif

Posted by: pek771 Mar 7 2022, 04:00 PM

Update, March 2022
Waiting for the motor, still. NetGain has no Hyper9's in the 144V variant available at the moment. It has been 10 weeks.
I do have the transaxle adapter frome EV West, which is really shiny and nice. As is the aluminum flywheel, and the Stage 2 Kennedy pressure plate. Transaxle is done...A-F-M-S-Z. I took out the X fifth gear, and put in a stock 914 5th although the electric car guys tell me I will be mostly running is 3rd or 4th.
I did see some Tesla Model S modules, which I will be using. The mounting is a bit different than what I had pictured, but it is certainly do-able. I can get three batteries in the front. one where the fuel tank was, and two under the stowage area for the targa top. There is still room where the battery tray was, and on the opposite side, where the D-Jet control unit was.But, I do have to get in a coolant unit fr the controller and batteries, and an AC unit. There seems to be room for fender well condensers.
I stripped all of the road grime off the bottom, wheel wells, everywhere. The wells are once again orange. It is cleaned, and undercoated with Second Skin Spectrum. Some of it got treated with osphophospate to prevent any future corrosion, and then coated with POR-15 and topcoat. I installed 80 mil sound deadener in the floors and door panels. I cut out the old battery tray...I won't need it, and it was the only area of the car which appeared to have any rust at all.
Car is totally stripped of any trim, glass, interior, brakes, pedals, everything. Should be fairly easy to paint now.
I have left everything stock, except where I cut the wiring harness, and I even left that so it would be easy to reconnect. Just in case anyone ever wants to put an underpowered smelly engine back in it.

Attached Image

Posted by: DBF Mar 7 2022, 09:38 PM

Great article in Panorama about a 13-year-old young woman doing an EV conversion on a 76 914. To her (and her generation), EV's and EV conversions will be the norm, but she is also one of us since she also thinks a 914 "is really cool". I wish her luck, and looking forward to reading about the details of your conversion.

Posted by: 914e Mar 13 2022, 11:06 PM

@http://www.914world.com/bbs2/index.php?showuser=5175 did you see the electric 914 on BaT. It looks pretty well done.
https://bringatrailer.com/listing/1975-porsche-914-43/#comments-anchor
It might give you some ideas for your project.

Posted by: pek771 Mar 15 2022, 10:08 AM

@http://www.914world.com/bbs2/index.php?showuser=23951
I did not, but I will check it out.
Pat

Posted by: Mikey914 Mar 15 2022, 10:19 AM

QUOTE(914e @ Aug 23 2021, 10:41 AM) *

QUOTE(pek771 @ Aug 23 2021, 10:33 AM) *

Well, it had these bumpers on it. There was a pile of bumpers there, and I took these as being the nicest. I don't care about period correctness. I Actually have no idea what should be on it. I do need to find some better seats, and some fiberglass to replace the front and rear lids.


I think 914 Rubber is still working on improved fiberglass and carbon fiber lids. Is there more piles of 914 parts where you picked this one up?

I have the fiberglass and carbon fiber in stock.


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Posted by: Mikey914 Mar 15 2022, 10:21 AM

Ans if you look at the list provided we can even provide with a headlight delete option


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Posted by: pek771 Mar 15 2022, 02:42 PM

We will talk in the near future. I still need door panels.

Posted by: pek771 Apr 6 2022, 09:15 AM

Short update: I brought the car to the painter yesterday. He said to grind the 40 year old Bondo off. It is all cracked, and would not make a good underlayment. Evidently, Bondo technology has come a long way in 40 years.
On the brighter side, my motor will be in in 3 weeks, supposedly.It was very nice of Karmann to put the oil line holes on either side of the floor pan (that is where the battery wires will go.

@shivers- No fire suppression system is planned. If I get a thermal runaway on the batteries, I jump out. I don't think there is a good way to put that sort of fire out in any onboard system.

@914e- I am trying to figure out a way to utilize the space on either side of the engine compartment for batteries. But, the batteries have to match the Tesla Model S modules to work properly (22.7V, 5.3kWh).

And, finally, did the 1970 have side marker lights? ( I suspect yes). The holes were filled in with 1979 Bondo.

Posted by: Jett Apr 6 2022, 09:18 AM

QUOTE(Shivers @ Oct 10 2021, 01:17 PM) *

I watched a documentary where the scientists had a drone in flight, had some kind of malfunction and it hit the earth. Wasn't that high up. The battery burst into flames upon impact. And not just a small fire, the dirt was frozen so two guys grabbed a big rock and started smashing the battery pack that didn't want to go out. Tesla may have crash zones for this reason, if they don't they should. Are you going to use some type of fire suppression system? Cool project

Kevlar bag for the batteries is a common protection mechanism, but you are spot on with the risk.

Posted by: pek771 May 28 2022, 06:09 AM

The car goes to the paint shop on 6 June. I think we are going with Porsche Murano Green, from the 80's. Everything else will bedliner black.
Car weighs 1200 lb empty (it is around 570# in front and 630# in the rear), including the wheels, front and rear lids, rocker panels and targa top-no glass, no powertrain. no seats. I sanded all of the 40 year old bondo off, which was cracked. Undercoated everything with Second Skin Spectrum.

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Car started out as orange. someone resprayed everything in blue. Tough getting all the blue painted areas prepped sufficiently for new paint.

Posted by: Cairo94507 May 28 2022, 08:05 AM

Hi Patrick - Nicely done. Taking the extra time and effort to prepare the jams, trunks, engine bay, etc., will pay great dividends once painted as the new color will adhere nicely. Nothing worse than a color change when it gets a chip and you see the prior color(s) show through. BTW, I like Murano Green. beerchug.gif

Posted by: pek771 Aug 19 2022, 07:43 PM

Short update: Got this from the painter today. Evidently there are a couple (at least) of Porsche Murano Green, so we came up with this instead. Everything not shiny and blue/green is bedliner.

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Posted by: steuspeed Aug 20 2022, 01:23 AM

That's a nice color!

Posted by: autopro Aug 24 2022, 09:57 AM

Color looks great!

Posted by: pek771 Sep 1 2022, 07:05 PM

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Quick progress report:
6 of the 7 Tesla modules are in. I managed to get two 2/0 wires in the tunnel.
Motor is mounted on the gearbox. I did install the Quiafe TBD. The charger is laid out, but I have to fab some brackets for it. No cooling system yet.


Posted by: pek771 Sep 1 2022, 07:08 PM

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Doesn't take up much room.

Posted by: DRPHIL914 Sep 2 2022, 07:57 AM

@http://www.914world.com/bbs2/index.php?showuser=5175

what tow bar did you use? the one on the first post , picture of it hooked up . that step up is what they need to line up with a hitch, I got the Harbor Freight one but its flat and i am going to have to use a lowring drop hitch on the truck, or get a different tow bar like that.

Thanks,

Phil

PS, nice project, that paint looks great. In light of recent increase in prices but recent increase in interest of battery power conversions im not sure the value will be hurt by the conversion. Someone could always take it back to original. My son and i were going to do this about 12 years ago, thats why i bought my car, but we dident do it as the cost of batteries, LIPO at that time was rediculous and either way you would not even get 75 miles so it got restored back to original color etc. BUT he and i still have thought of doing this, maybe only to tub that had already been butchered smile.gif .

Looking forward to seeing the culmination of your effort.

Posted by: pek771 Sep 2 2022, 10:00 AM

Phil, I got that hitch plate from 914Rubber. It accepts a Super Beetle tow bar. The 914Rubber plate is still on the car..bolts up to the stock torsion bar housing in front. The hitch is a Curt, and it is a 5" drop hitch that goes into the receiver on the car..So, the 914Rubber plate and the Super Beetle tow bar cost about $300; well worth it.
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Posted by: VaccaRabite Dec 20 2022, 06:55 AM

@http://www.914world.com/bbs2/index.php?showuser=5175
Any updates?

Posted by: pek771 Dec 23 2022, 02:03 PM

Update:
Moving to NC in two weeks. Been getting the car ready to pull up to NC from Florida. I am going to flat tow it. I have a TOAD portable braking system for it.I'm debating the merits of putting the front and rear glass in first.
I had two battery boxes built up in Tampa. All seven Tesla modules are in, but not wired. I have them in pretty secure, so this little trip will be a good test.
Rear battery boxes with batteries are 125 Lb each, and the motor and controller are 139 Lb, so this works out fairly closely to the original 4 cylinder weight.
When I get the car up to Carolina, I'll go through the weights and corner weights. I am pretty sure that the car will spin like a top, and not roll over:)


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Posted by: Dlee6205 Dec 23 2022, 06:03 PM

Where in NC are you moving to?

Posted by: pek771 Dec 23 2022, 08:22 PM

Hi Doug, Rock Barn, in Conover.

Posted by: FlacaProductions Jan 3 2023, 06:58 PM

Doubtful. It'll gain less than 200 lbs. and acquire rocket-like acceleration.

Posted by: krazykonrad Jan 3 2023, 07:49 PM

This is a really interesting project. Where are you $-wise on the cost of the electric components? I'm interested to see where this lines up with a six conversion or a Subaru conversion.

beerchug.gif

Posted by: pek771 Jan 4 2023, 07:13 AM

@http://www.914world.com/bbs2/index.php?showuser=5610 :
I am at approximately $41k on this, everything. Cost of the car, shipping to FL, motor, batteries, every nut and bolt almost. Paint, new rubber and trim parts, total refresh.

Like you, I am curious where it lines up. I think my old 914 racer was about the same. The Hyper9 motor and 7 Tesla modules are about the same as a well built 2.7. I think a Suby conversion would be more.

Posted by: Jett Jan 4 2023, 09:14 AM

QUOTE(Shivers @ Oct 10 2021, 12:17 PM) *

I watched a documentary where the scientists had a drone in flight, had some kind of malfunction and it hit the earth. Wasn't that high up. The battery burst into flames upon impact. And not just a small fire, the dirt was frozen so two guys grabbed a big rock and started smashing the battery pack that didn't want to go out. Tesla may have crash zones for this reason, if they don't they should. Are you going to use some type of fire suppression system? Cool project

IIRC. The RC folks wrap the batteries in Kevlar to protect them and control fire.

Posted by: CCE Jan 5 2023, 07:17 PM

QUOTE(Mikey914 @ Mar 15 2022, 10:19 AM) *

QUOTE(914e @ Aug 23 2021, 10:41 AM) *

QUOTE(pek771 @ Aug 23 2021, 10:33 AM) *

Well, it had these bumpers on it. There was a pile of bumpers there, and I took these as being the nicest. I don't care about period correctness. I Actually have no idea what should be on it. I do need to find some better seats, and some fiberglass to replace the front and rear lids.


I think 914 Rubber is still working on improved fiberglass and carbon fiber lids. Is there more piles of 914 parts where you picked this one up?

I have the fiberglass and carbon fiber in stock.

Wow! Nice, how do they look finished? And what is the cost?

Posted by: VaccaRabite Jan 5 2023, 08:08 PM

Best of luck on the move!

Posted by: pek771 Jan 7 2023, 06:43 AM

@http://www.914world.com/bbs2/index.php?showuser=1435
Thanks!

Posted by: pek771 Jan 19 2023, 12:18 PM

BTW, I seemed to have made it to Conover, NC. Flat towed the 914 here from Florida.

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Posted by: pek771 May 30 2023, 07:45 PM

Update, Decoration Day 2023.
Batteries are all in. 7 Tesla modules and 6 4s18 p 2170 cell packs I built for the lower voltage stuff. This way. I don't have to rob and power from the Tesla modules. 4 Tesla modules are astride the motor in the engine compartment, and three are in the front. Th 6 4s18p batteries are where the fuel tank was, and in the very from of the trunk. I got new CV's and booties from PMB, There is very little room for the axle shafts to clear the rear batteries. Frankly, I'm worried I may twist the shafts out and short the batteries.

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More to follow...

Posted by: pek771 May 30 2023, 07:50 PM

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I am rewiring the lighting at the moment. Don't need most of the existing electric or the 50Attached Image year old wiring, but I am keeping some of the wiring (it's in the tunnel).

Posted by: pek771 May 30 2023, 07:51 PM

Last photo for today:

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Posted by: pek771 Oct 1 2023, 05:04 AM

Update 1 October 2023:
Rear battery boxes are in (rev 2 boxes, I didn't like the HV terminals next to the axle shafts)
Wiper motor system doesn't work, so I am looking for a good motor
Today, I'll try to get the fresh airbox in (there may be a battery in the way)
I have to get two batteries re-repaired from 057 Tech in Hickory (I have 0 V on two cell taps, which I don't think the BMS will like)
Corbeau seats are mounted on the sliding rails (I had to weld in a new bracket in the drivers side)

Wiring is a PITA
I ordered a cell tap validation tool from Orion (although I have been shaking the wiring out with a voltmeter)
I got a motorcycle radiator for the cooling system, and ordered a pump and more rubber fuel hose
Mounted the charger under the rear trunk, next to the transmission
More that I forgot at the moment
Pat



Posted by: VaccaRabite Oct 2 2023, 09:49 AM

How close are the axles to the battery boxes that you are worried?

So long as your CV bolts are good and properly torqued, and you are using new schnorr washers, you should be in good shape. I don't think the axles can wobble or really twist. That much torque would break the CV or the transmission before the axles.

In a stock application the axles are near the heat exchangers and the shifter bar. On my car they are also near the aux ol cooler.

SO long as an axle does not break the CV and start flailing around, you should be good.

Zach

Posted by: Gint Oct 3 2023, 04:58 PM

QUOTE(pek771 @ Oct 1 2023, 04:04 AM) *
Wiring is a PITA


Yep!

Awesome project. Can't wait to see it finished. And you're getting close.

Posted by: pek771 Oct 10 2023, 04:43 AM

I lost two roll pins for the new CV joints (lobro). I'm going to make some new press fit pins, on my lathe, from a bit of steel.

And, I picked up a pump, mounted it under the rear trunk, by the radiator, It is so odd to have a radiator.

I have one Tesla module that has no voltage reading on cell taps 2 or 3. 057 Technology can fix these, but they seem to have stopped the battery operations, no one is at their shop; it's closed down. I can't get ahold of Jason (the former owner). I hate to have to fix this myself, but I will if I have to. It becomes a big problem with the BMS if I can't read these two cell groups.


Posted by: pek771 Dec 6 2023, 05:35 PM

I weighed the tub. 2100 with no windshield or rear glass, or Corbeau seats. Everything else is in…batteries, motor, wires.

I’ll corner weigh it after I look over the front suspension.

Posted by: Geezer914 Dec 6 2023, 08:14 PM

No such thing as a quiet sports car. Converting to electric will make the car heavy. Yes you will have instant torque, but you will sacrifice handling which is what the 914 is all about. By converting to electric you will end up with a fast turd stromberg.gif

Posted by: Chris914n6 Dec 6 2023, 08:23 PM

2100# is not a bad weight. My N6 is about that with a full tank.

Should make for a fun 100 mile round trip.

Posted by: nimblemotorsports Dec 6 2023, 08:24 PM

I converted a Boxster to EV and think that is a better option than a 914. Back in the day, an air cooled car was a good donor, but today plenty of cars to choose from.
The 914 isn't really built to hold a lot of weight, so yeah those V8 swaps are horrible, so I am thinking a v8 swap into my 914. But with a complete suspension swap too.
I already have another 2 EV projects.

There is a 914 EV on the Sacramento CL right now, is this a members car?
Only asking $18k and it has a Tesla motor.
https://sacramento.craigslist.org/cto/d/sacramento-tesla-porsche-914/7690362519.html
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Look forward to seeing the finished project!

Posted by: pek771 Jan 9 2024, 06:02 AM

weight on the proform scales:
2004 total, no driver, hoods, targa top, glass, one battery is out of the front (55 lb)

this is the first iteration, Now that I know how to work the scales and can get the car to stay on them, I can do the suspension.
FR 450
RR 508
FL 484
RL 562

not as heavy as some think

Posted by: Chris914n6 Jan 10 2024, 08:15 PM

That's a matter of context.

My car will go 400 miles on a tank, which would get me out of town as fast as I want.

You've got an estimated 100 miles between breaks. 400 miles of battery would be much heavier.

QUOTE(pek771 @ Jan 9 2024, 04:02 AM) *

weight on the proform scales:
2004 total, no driver, hoods, targa top, glass, one battery is out of the front (55 lb)

this is the first iteration, Now that I know how to work the scales and can get the car to stay on them, I can do the suspension.
FR 450
RR 508
FL 484
RL 562

not as heavy as some think


Posted by: targa72e Jan 10 2024, 10:57 PM

I have found for me the drive around 2 hours and stop (breakfast, lunch, dinner, etc) and then drive 2-3 hours more to be the sweat spot for long drives in a old car. Still keeps things fun.
When I need to slog out long distance (not for fun) then a modern car with comfortable seats and all the tech makes the long days bearable .

john

Posted by: pek771 Jan 11 2024, 01:11 PM

How much range is unknown at this point. I am hoping for the best… I figure I weigh half as much as a Tesla and I have half as much energy storage.

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