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> Decision time, Fuel injection or carb(s)
srreality
post Apr 29 2016, 01:26 PM
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I've reassembled most of the project car I bought last fall........1973 914-4 1.7 liter. I'm in the process of restoring/rebuilding the suspension and brakes. The next big thing on the list is engine rebuild. I can't do the work myself, but have a good engine builder locally. Question is, rebuild the fuel injection (car sat in a "sealed" storage container for 8 years) or convert to Weber(s). If I'm going to convert to carbs, the engine rebuild needs to include a different cam, so good time to decide. This car will be a very nice "driver" not a show car or track car, so complete originality is not necessary. Functionality and driveability are. The thin air here in Colorado begs for more HP, but the budget doesn't allow for "wild" things. What say Forum? Spend $ on fuel injection rebuild or convert to carbs?
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914Sixer
post Apr 29 2016, 01:30 PM
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It came with fuel injection for a reason.
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EdwardBlume
post Apr 29 2016, 01:32 PM
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Do what you want, but I chose to go with a 2056 with a LN cam using a stock FI. I dig dual carbs, but chose the FI in the end.
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ThePaintedMan
post Apr 29 2016, 01:35 PM
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I love working on carbs, but I would prefer a fuel injected car hands down, every day.
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ThinAir
post Apr 29 2016, 01:38 PM
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My recommendation is to keep the FI. It is much more adaptable for varying conditions and needs almost no "tuning" like you'll experience with carbs. Dual carbs need syncing, which requires specialized equipment. I find the FI performance better as well.
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TheCabinetmaker
post Apr 29 2016, 01:57 PM
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If you have all the injection parts, why wouldn't you? You said driveability. That answers the question for me.
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jor
post Apr 29 2016, 02:05 PM
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I have carbs on my car because a prior own lost the FI. I appreciate the noise and I like the power. But if I had the FI, I'd be using the FI. In your position, I would stick with the FI. The carbs reduce your economy and give you less flexibility when driving between altitudes.
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saigon71
post Apr 29 2016, 02:34 PM
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Once the kinks are worked out on the factory FI, it really is an excellent system for both drivability and performance.

+1 on sticking with FI. I'm a big fan of D-Jet.
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stugray
post Apr 29 2016, 02:37 PM
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Where in Colorado are you located?

I have a car with Carbs and two complete FI systems (one 1.8L and one 2.0L) that I don't need.

QUOTE(914Sixer @ Apr 29 2016, 01:30 PM) *

It came with fuel injection for a reason.


And the 914 that won its class in Le Mans had carbs for a reason too.
(IMG:style_emoticons/default/cheer.gif)
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boxsterfan
post Apr 29 2016, 02:43 PM
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Go with FI. Try to find original or look for someone selling a used Megaquirt/Microsuirt setup.
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mark04usa
post Apr 29 2016, 02:48 PM
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No to Carbs..BTDT, with FI, you'll have a much better car.
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poorsche914
post Apr 29 2016, 02:52 PM
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Recently installed a 2056 built for carbs (about a 1000 miles so far)... I miss the FI (IMG:style_emoticons/default/dry.gif)

(IMG:style_emoticons/default/driving.gif)
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ndfrigi
post Apr 29 2016, 03:26 PM
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F.I.
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somd914
post Apr 29 2016, 03:46 PM
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I've had better luck with carbs than my D-Jet, but I'd love to have a modern FI system - parts availability and maintaining a proper configuration for a specific year is becoming difficult. Ultimately it is your car, your choice - don't let us make the choice, you have to live with it.
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Cairo94507
post Apr 29 2016, 04:11 PM
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Aside from all of the above, and really a 2056 is the way I would go too with a mild cam and the stock FI, the next best reason is to keep your wife/girlfriend/ significant other, from walking into the house and constantly complaining about the gas smell.

Carbs smell and they smell when you are driving too. I could always smell the gas on my 2nd Six when it had the stock 2.0 and Webers. My wife would come in after I came home and freak out thinking the water heater was going to blow up the house due to the gas fumes in the garage.

I also grew tried of balancing the Webers on a regular basis. I went with a 3.2 with Motronic in my '71 Six for just those reasons. OH, yeah, the extra HP might have been a small factor..... (IMG:style_emoticons/default/w00t.gif)
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BeatNavy
post Apr 29 2016, 04:23 PM
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I'm with Bob (Saigon71) - I like D-Jet, but if you're starting to put it together from scratch it can take a fair amount of work to get it right. I would like to experiment with Megasquirt on a build in the not too distant future. So yeah, I'm in the FI camp, but I like learning and tinkering with stuff.
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Justinp71
post Apr 29 2016, 04:30 PM
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I'm starting to think part of the carb smell is the engine breather. Typically the engine breather is re-cycled in FI , but in a carbed car its dumped to atmopshere. I currently have my breather dump into a can in the rear trunk and have a lean/normal a/f at idle and the smell isn't that bad with my carbs. But don't put anything in the trunk (IMG:style_emoticons/default/smile.gif).
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ThinAir
post Apr 29 2016, 04:37 PM
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If I was going to change from factory FI it would be to go to a MegaSquirt type of setup. My reasons would be because of concerns over original FI parts becoming unavailable and because the MegaSquirt type of system is so tunable.

The D-Jet documentation by Brad Anders is absolutely indispensible (http://members.rennlist.com/pbanders/) for optimizing and maintaining D-Jet systems. I have found my D-Jet to be very reliable and not as tough to get tuned as some have made it sound. One thing for sure - I could not have done it without Brad's wonderful resource.
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boxsterfan
post Apr 29 2016, 04:40 PM
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QUOTE(ThinAir @ Apr 29 2016, 03:37 PM) *

The D-Jet documentation by Brad Anders is absolutely indispensible (http://members.rennlist.com/pbanders/) for optimizing and maintaining D-Jet systems. I have found my D-Jet to be very reliable and not as tough to get tuned as some have made it sound. One thing for sure - I could not have done it without Brad's wonderful resource.



(IMG:style_emoticons/default/agree.gif) + 1,000,000
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BK911
post Apr 29 2016, 06:57 PM
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You can install a fi cam and run carbs.
It will run fine.
I went carbs because I was tired of trouble shooting the fi.
Installed carbs and never looked back.
But that was before the prices for original cars started taking off.
Still love my carbs and have no plans of converting back.
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