I had always assumed that the type 4 was also used in the 912. However it seems that they used a polo motor instead. It actually looks like a 6 cylinder less 2 cylinders.

Has anyone used one of these in a 914? Any more power to be gained? Advantages & disadvantages?

Thanks

DAvid

The 912E (1976 model year only) used the 2.0L 914 motor but with the 1.8L Fuel Injection system (Bosch L instead of Bosch D) if memory serves correctly.

The Polo used an inline 4 cylinder water cooled engine.

The earlier 912s used a 356SC motor so all of the 912s had a flat 4, air cooled motor.

the polo was always a water cooled straight 4... UNLESS there is something I don't know about Polo motors (Well, there probably are MANY things I don't know about Polo motors)

Not a Porsche motor but uses Porsche parts and design. Very cool, very expensive.

http://www.polomotor.com/

Yep, bring at least $30k to have a polo in your car
Very cool engines for swb long hood 912s and 356s...just lots of money.

My Guess is you saw Chris Pomares 912 with a Polo motor installed. That motor cost more than a 914-6 does these days. It's the only one we know of as of yet.

Original 912's used the remaining 356 engines.

912E models used the remaining 914 engines.

This image of a 912e motor is really cool

That's not a VW Polo motor, it's a motor designed by Dean "Polo" Polopolus and they are custom build aftermarket engines.

POLO

Marco?

That is what I saw. Thanks Mepstein. There is not much info on that web site. If only $ grew on trees. How much HP is is supposto have?

DAvid

SirAndy,

Thanks the correction. Dean works out of the San Diego area.
Ya 911 motor missing 2 cylinders.

I saw one on a Beck Spyder
Really impressive.
Concur, its a 911 engine with 2 cylinders chopped off.

~180hp and fits into a 356 or 912 nicely. I'm sure it would work great for one of our 914's but (me personally) why pay $30K for a polo motor when a 911 motor can be had for $5-10K and 914's were made to fit a 6. Weight savings for a polo engine would be less than 200lbs. Cool factor not withstanding.

Polo. (someone had to....)

Wouldn't a 6 fit just as well into a 912?

Zach

Yes, but the entire 912 philosophy (don't tell them the factory was just using up the leftover engine supply) is a lighter, more nimble car with better balance.

A six would ruin the entire 912 mystique.

Yes but an older swb 912 really does drive nice with a light engine in the back. I think this engine was mostly intended for hot 356's.

Canepa Motorsport had on display at Rennsport Laguna Seca Oct 2011 a 911/4, 2.5 Liter, 4 cylinder engine, 200 Horsepower 185 F/Lb Torque! Looks really nice and the guy I spoke with had an estimate on $$ but it was so high it flew in one ear and ya out the other, I have a picture but cant post it.

That would be 50hp per 625cc, it can be done but I always consider figures like that in an N/A carbed engine as optimistic. Funny that it has less torque than HP.

The guy you spoke to was most likely Dean P who developed it. I saw him at Laguna that week.

Now that you mention it, I beleave you are righ,t Dean and yes he was the one who deveolped tha one!

It requires some cutting and welding; the mounts are not identical. I know someone who had her car converted--some of us called it a "912-6".






That's expected from an engine you spin quickly. In fact, it's expected from pretty much any small-displacement engine that makes a bunch of power...

--DD

The valve covers on the Dean Popolus engine are cute. They have a cast "PORSCH" embossment, as if a 6 was run through a very capable band saw, removing the front 2 cyls.

...or rear two cylinders, as it is.

Or you can get these nice covers from the guy that does the castings for the Polo4. This is my 2.2, Dean delivered it at RRIV... still haven't installed it in my 356.
After waiting two years (Dean builds them to order and you don't rush perfection) when it goes in, it'll be with the right gearbox.

Click to view attachment
Click to view attachment

There are another two 912's currently being built with these engines, Chris's 2.4 was the first. IIRC, first with injection, too. Much lighter than a Porsche 6.

Russ - Looks terrific!

Clewett Engineering has a 2.6L on thier website

DAvid

From Rennsport IV:


4-cylinder "911" engine by cjcam, on Flickr

Dunkels meet in 2001! (These things have been around a while).


4-cylinder Porsche 911 engine! by cjcam, on Flickr

For more info on specs of the 912 Polo engine and future Polo 912's go to www.PompoloDesign.com
The engine in this car has full engine management, 11.3 to 1 CR, ported 993 twin plug heads, titanium valves,etc. The whole car has been upgraded. 914 transmission with custom gears, 69 to 71 901 911 hose cone, and wavetrac tbd. Some of Eric's very cool brakes. Pete Stout liked them and had Eric make him up a set if I'm correct and a ton of other stuff. It's not a 914 but the Polo would work in your cars. The car was written up for the 3rd time last month in Flatsixes online.
I've had a 914 2.0 and a 914-6 with a 2.2S. I think a 914 Polo would be awesome.
Chris Pomares

I want one with motec FI and twin turbos the ultimate 914 GT turbo

Here are a few pictures of a POLO engine with fuel injection and crank fire ignition.
http://www.pompolodesign.com/

Your ears burning with people talking Polo motors?
Any luck selling the 912 yet?

It appears the car is a keeper. I've had offers of 135 but I couldn't rebuild a car to this level for that. 10 months ago I thought I could sell it for north of 150 pocket a little money and build another one. Maybe even a 914 POLO car. Well prices and parts have gone up so much for both I can't make that happen unless prices come back down. Who knows if or when that might happen so I'll probably go retrieve it in the next month or so. I have several improvements I'll do to the car over next winter.
And yes I talk to someone several times each week about POLO engines. There is quite a bit of interest in that engine. My site gets about 75 views a day from all over the world.

https://www.youtube.com/watch?v=JyWMnx1yxvc

https://www.youtube.com/watch?v=EmMtdIfX-Yk

Dean 's new web site address is www.PoloMotor.com

I have to admit I really like the way this motor looks & hope it would perform as nice as it appears. If I ever built myself a Beck 550 I think I'd give this engine a try, along w/ a 916 tranny & disc brakes all around. Not very authentic but so what?

Very cool...I don't blame you for keeping it, not worth selling such a cool car at a loss.

I need to find new job so I can afford one for my SC...and to have Scotty paint it. Just a pipe dream.

Beyond saving weight the engine is 6 to 8 inches shorter. That would pull the fan away from the 914 firewall the same amount. You guys know the 914's better than me. Would that help with air flow to the fan?

Here is a thread with some cool pics of a new Polopolus being built by Justin Rio for one of his 356s.
http://www.abcgt.com/forum/6-Hot-Rod--Modi...oupe-58367.html

Here is a POLO also being built with 3.8RS parts. You'll find more of this engine here. Sorry about two of the same picture. I don't know how to remove a picture..

http://www.pompolodesign.com/-912-polo-car...-the-works.htmlClick to view attachment Click to view attachment

Um ... the two middle cylinders.

Yes, but the entire 912 philosophy (don't tell them the factory was just using up the leftover engine supply) is a lighter, more nimble car with better balance.

A six would ruin the entire 912 mystique.
Eric Shea

Here is a article that covers Eric's point of the left over 616 engines and Porsche's first try at a 4 cylinder Porsche engine.
From what I've heard Porsche will be offering a turbo 4 in the next couple of years.
By the way. The 356 SC made 95hp. The 912 engine was slightly detuned to 90hp to make it easier for first time Porsche owners to drive in the city.

Dean only cut 2 cases. A ruined mag case for a trial fit and one 3 liter case that he made a working engine out of. He has a degree in mechanical engineering. He then designed a 4 cylinder case and has it cast out of aluminum.

http://www.pompolodesign.com/netherlands-article.html


http://www.excellence-mag.com/issues/205/a...re#.U6dnqPldXDW

912s are a little better balanced because the weight of the motor sits more forward than a 911 motor, as well as reduced motor weight.

My '67 (911) started out in life as a 912. I was planning to convert it back and have two 912 motors for it ('68 and a '69). I also have most of the components to build up a 1720 including a complete case.

I'll probably sell the '67 'as is' and keep the 912s as spares for my '66.

I took the alternator out to have it checked. Rated at 50 amps but produced 60 amps. With fuel injection and the lights on I probably need more like 75 amps. I'll deal with that this winter along with a couple other projects. I took a few pictures. At 8000 miles the engine is dry as Mohave bones! This engine is unreal. Wait till you see the other 912 POLO engines coming down the line. I talked to Dean for about a hour the other evening. A couple of 60 something guys just jacked about what we're doing. 1 in KC, 1 in Spain, 3 in CA, 1 in Asia. One of which is like a 2.8 with a monster cam, BIG ports, etc. My car is FAST, it will be killer. I can't wait for all of us to get together in a year or two for a drive. Over the next year or so I'll have some neat additions for my car. Life is truly very goodClick to view attachment Click to view attachment

Hijack......
That AC compressor mount in post # 7 looks ideal for a 914 4 cyl.
Just substitute a rotary unit to reduce size and gain smoothness.

A link to a POLO engine kit offer

http://www.912bbs.org/vb/showthread.php?46...ngine-kit-offer
Chris

Wow, wish i had the money!
1720 in my 356sc is awesome, but a polo would be awesome-er.
Does the kit include p/c and heads or are those buyer purchased.

They should be adding 2 cylinders to the flat 6 not taking 2 away.

With a horizontal fan to reduce the overall length.

That would be a sick motor.

John

The flat 8 is indeed a awesome engine better suited to the 914 than a 911 or 912.
A POLO 4 is fast enough for me and the weight behind the rear axle needs to be kept to a minimum on the SWB cars.

Also if you contact Dean mention the 912 Registry thread to get in on the offer.
Chris

Very cool! Thanks for adding so many pictures!

The only thing I don't like is the collectors on all of the exhausts; they seem like they converge far too quickly.