Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

2 Pages V  1 2 >  
 Reply to this topicStart new topic
> Will My Troubles Abade?, if I switch to carbs????
Bruce Allert
post Sep 25 2004, 08:24 AM
Post #1


Hellions asleep
****

Group: Members
Posts: 3,289
Joined: 19-March 03
From: Eagle Creek, Orygun
Member No.: 441
Region Association: Pacific Northwest
It seems the only problems I've had with Punkin is always the EFI (except when I sucked an exhaust valve in the 1.7 (IMG:style_emoticons/default/rolleyes.gif) )

I know, I said I was done with the car in another thread but I luv this car & if I switch to carbs would this be the way to go?

If so, what is needed for the transition on a 74 2.0?

.......b
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bleyseng
post Sep 25 2004, 08:48 AM
Post #2


Aircooled Baby!
**********

Group: Members
Posts: 13,034
Joined: 27-December 02
From: Seattle, Washington (for now)
Member No.: 24
Region Association: Pacific Northwest
About $600 and some stupidity..............
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Sep 25 2004, 08:56 AM
Post #3


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 22,080
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
my guess was a bit higher. used carbs(whatever the market), intakes, linkage, fuel pump, gaskets, air filters, a gazillion jetting questions...

kevin
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Porsche Rescue
post Sep 25 2004, 08:57 AM
Post #4


Saving and Enjoying Old Porsches
****

Group: Members
Posts: 2,978
Joined: 31-December 02
From: Bend, Oregon
Member No.: 64
Region Association: None
Bruce, have you done all the various D-jet tests with a volt/ohmeter using Brad Anders data? Once you get over your frustration, that's where I would start. Although a sudden change like you experienced usually means something came loose.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bleyseng
post Sep 25 2004, 09:00 AM
Post #5


Aircooled Baby!
**********

Group: Members
Posts: 13,034
Joined: 27-December 02
From: Seattle, Washington (for now)
Member No.: 24
Region Association: Pacific Northwest
I can loan you my Djet tester if you want.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Porsche Rescue
post Sep 25 2004, 09:05 AM
Post #6


Saving and Enjoying Old Porsches
****

Group: Members
Posts: 2,978
Joined: 31-December 02
From: Bend, Oregon
Member No.: 64
Region Association: None
Quick Bruce, say yes before he changes his mind!! I'll even help so I can see how the thing works.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
lapuwali
post Sep 25 2004, 09:08 AM
Post #7


Not another one!
****

Group: Benefactors
Posts: 4,526
Joined: 1-March 04
From: San Mateo, CA
Member No.: 1,743
At the risk of inflaming Jake and the other pro-carb people, removing a troublesome EFI system and fitting a set of used Webers is simply trading one set of frustrating problems for another. It's just as much work (perhaps more) to get the Webers working, it's just different work. The end product (unless you do other things and/or have magic hands like Jake apparently does) will not work as well as the D-Jet. Bad mileage, a nearly constant smell of fuel, the air cleaners pass more dirt (unavoidable with K&Ns, which are unavoidable with Webers unless you fabricate an airbox), more noise.

New Webers are a tad less work, but new Webers are much more than $600 a set now.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Hi_Fi_Guy
post Sep 25 2004, 09:17 AM
Post #8


Tuetonic terror
**

Group: Members
Posts: 375
Joined: 12-August 03
From: Sunny Phoenix, AZ
Member No.: 1,019
I am a big fan of F.I. and if you have all the original F.I. components and have the skills, or access to a person with the skills then it should be made to run really, really well.

Having said that, I was in a situation with bucking and surging on a sopposed original F.I. car that had many, many missing components and in the end we were surprised it was running at all.

For me the solution was carbs. Mostly becauase I decided to go with a2270cc combo and at the time aftermarket F.I. started around $3500. Having previously owned two F.I. 914s I can honestly say that the carburated engine runs smoother, has better throttle response with no bucking or surging and also, it starts every time (IMG:style_emoticons/default/biggrin.gif)

The downsides are:
- Induction roar, a good noise but can become a bit tiring on the open road ( I guess an air-box or something would cure that).
- Expert tuning can be tricky. Anyone can get a car with carbs to run, but to get it jetted and running correctly has become a sort of black art in this day of computer controlled everyhing.
- Emissions testing. Again, expert assistance is required to tune the car to pass and then re-tune the car to run correctly (carbs & ignition). In some states just having the carbs can cause a failure of the visual inspection.

I am positive that a properly set-up and maintained F.I. system can and will run better, produce more power over the entire rev range, and produce less emissions than a carb'd car. As happy as I am with my current set-up I am constantly watching the market for an F.I. system that I might want to step-up to so for me carbs are a short term solution that allow me to enjoy the car today rather than wait another three years.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Joe Bob
post Sep 25 2004, 09:28 AM
Post #9


Retired admin, banned a few times
***************

Group: Members
Posts: 17,427
Joined: 24-December 02
From: Boulder CO
Member No.: 5
Region Association: None
Ask Andy how he likes carbs....
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Sep 25 2004, 09:28 AM
Post #10


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 22,080
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
right on the roar. on a 800 mile road trip it gets old.

kevin
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bruce Allert
post Sep 25 2004, 09:39 AM
Post #11


Hellions asleep
****

Group: Members
Posts: 3,289
Joined: 19-March 03
From: Eagle Creek, Orygun
Member No.: 441
Region Association: Pacific Northwest
OK, so....
this is the responce I was hoping for..... thanks.

Geoff, I will take you up on your offer and Jim, yours as well. If I can get this thang figured out I just might keep it.

I'll give all 'O you guys the (IMG:style_emoticons/default/smilie_pokal.gif) "Silver Tongued Devil" (IMG:style_emoticons/default/smilie_pokal.gif) Award ten times over (IMG:style_emoticons/default/smile.gif)

thanks bro's.......... b
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JoeSharpOld
post Sep 25 2004, 10:02 AM
Post #12


Does it seem cold to you
**

Group: Members
Posts: 361
Joined: 29-April 04
From: Camping in Neverland
Member No.: 2,001
Bruce: No mater which way you deside to go at least you'll always have something to do thats not Boring. (IMG:style_emoticons/default/biggrin.gif)
Joe
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Sep 25 2004, 10:22 AM
Post #13


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
Screw carbs, if your dead set on getting rid of the factory FI get a SDS or Kit Carlson FI system.

PEFI rocks!!!!!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
anthony
post Sep 25 2004, 10:33 AM
Post #14


2270 club
****

Group: Benefactors
Posts: 3,107
Joined: 1-February 03
From: SF Bay Area, CA
Member No.: 218
If you are a DIYer, Megasquirt is also an option. By the time you are done and buy an LM1 wideband o2 sensor setup to tune it, it will cost $600.

QUOTE
About $600 and some stupidity..............  


A brand new set of carbs and linkage is closer to $900 now. Ouch!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bleyseng
post Sep 25 2004, 10:50 AM
Post #15


Aircooled Baby!
**********

Group: Members
Posts: 13,034
Joined: 27-December 02
From: Seattle, Washington (for now)
Member No.: 24
Region Association: Pacific Northwest
Can't say I want to ship the tester as its old soo how do you want to get it?

You coming up this way soon? BTW its over at a fellow 914guys now as he's trying to track down a problem.

Geoff
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bruce Allert
post Sep 25 2004, 10:57 AM
Post #16


Hellions asleep
****

Group: Members
Posts: 3,289
Joined: 19-March 03
From: Eagle Creek, Orygun
Member No.: 441
Region Association: Pacific Northwest
Geoff, let's hold off for now so I can sleuth out this problem first. Could be a wire that I can't see w/o pulling the air cleaner or sumpin under the car. My sister lives up yer way & wil be coming down in a couple weeks. We can arrange a pick up when that happens.

This last Sunday at AX a wire on the starter came unplugged. Maybe that wire is resting too close to something just enough to short intermittantly (grasping at straws)

......b
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Hi_Fi_Guy
post Sep 25 2004, 01:51 PM
Post #17


Tuetonic terror
**

Group: Members
Posts: 375
Joined: 12-August 03
From: Sunny Phoenix, AZ
Member No.: 1,019
QUOTE(Mark Henry @ Sep 25 2004, 08:22 AM)
Screw carbs, if your dead set on getting rid of the factory FI get a SDS or Kit Carlson FI system.

I thought the Kit Carlson F.I. system was no longer happening. Am I wrong?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Ray Warren
post Sep 25 2004, 05:08 PM
Post #18


Member
**

Group: Benefactors
Posts: 415
Joined: 1-October 03
From: Canada
Member No.: 1,214
Region Association: None
QUOTE(Hi_Fi_Guy @ Sep 25 2004, 02:51 PM)
QUOTE(Mark Henry @ Sep 25 2004, 08:22 AM)
Screw carbs, if your dead set on getting rid of the factory FI get a SDS or Kit Carlson FI system.

I thought the Kit Carlson F.I. system was no longer happening. Am I wrong?

WTF !!
Where did you hear that?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
3d914
post Sep 25 2004, 06:23 PM
Post #19


Senior Member
***

Group: Members
Posts: 1,275
Joined: 24-September 03
From: Benson, AZ
Member No.: 1,191
Region Association: Southwest Region
Bruce,

Just an amendment to the MegaSquirt suggestion. You can successfully do Open-loop (no O2 sensor) and only spend $300.00 or so. Ask me how I know!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
bob91403
post Sep 25 2004, 06:26 PM
Post #20


Senior Member
***

Group: Members
Posts: 618
Joined: 15-September 04
From: Los Angeles, CA
Member No.: 2,763
Fixing your FI is a better idea for several very important reason. All the buyers guides tell people to shy away from 914-4s that have been carbed. Makes it harder to sell. They say it's a sign of a problematic vehicle. It decreases the value because it's not original. And, you can sometimes get into trouble trying to register it. Some states do not allow modification of the fuel system.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

2 Pages V  1 2 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 16th May 2024 - 02:33 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...