Will My Troubles Abade?, if I switch to carbs???? |
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Will My Troubles Abade?, if I switch to carbs???? |
Bruce Allert |
Sep 25 2004, 08:24 AM
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#1
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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 |
Bleyseng |
Sep 25 2004, 08:48 AM
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#2
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Aircooled Baby! Group: Members Posts: 13,036 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
About $600 and some stupidity..............
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rhodyguy |
Sep 25 2004, 08:56 AM
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#3
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,192 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 |
Porsche Rescue |
Sep 25 2004, 08:57 AM
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#4
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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.
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Bleyseng |
Sep 25 2004, 09:00 AM
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#5
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Aircooled Baby! Group: Members Posts: 13,036 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.
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Porsche Rescue |
Sep 25 2004, 09:05 AM
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#6
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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.
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lapuwali |
Sep 25 2004, 09:08 AM
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#7
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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. |
Hi_Fi_Guy |
Sep 25 2004, 09:17 AM
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#8
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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. |
Joe Bob |
Sep 25 2004, 09:28 AM
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#9
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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....
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rhodyguy |
Sep 25 2004, 09:28 AM
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#10
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,192 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 |
Bruce Allert |
Sep 25 2004, 09:39 AM
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#11
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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 |
JoeSharpOld |
Sep 25 2004, 10:02 AM
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#12
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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 |
Mark Henry |
Sep 25 2004, 10:22 AM
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#13
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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!!!!! |
anthony |
Sep 25 2004, 10:33 AM
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#14
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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! |
Bleyseng |
Sep 25 2004, 10:50 AM
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#15
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Aircooled Baby! Group: Members Posts: 13,036 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 |
Bruce Allert |
Sep 25 2004, 10:57 AM
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#16
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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 |
Hi_Fi_Guy |
Sep 25 2004, 01:51 PM
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#17
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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? |
Ray Warren |
Sep 25 2004, 05:08 PM
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#18
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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? |
3d914 |
Sep 25 2004, 06:23 PM
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#19
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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! |
bob91403 |
Sep 25 2004, 06:26 PM
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#20
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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.
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