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 kombi_kid
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| posted on February 10th, 2004 at 08:26 PM |
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VW fuel injection vs carby's
hey
whats the pro's and cons of original VW fual injection on 2L type 4 motors VS the carbies??
cheers
rhys
it aint just cool its aircool'd
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 Flintstones
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| posted on February 10th, 2004 at 09:48 PM |
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with injection is starts first time every time no matter what the condition is, no need to consistantly tune twin carbies.
Plus if you wanted more power later on, you can add a turbo, cause your half way there already with the injection. Just change the computer to a
programmable, add bigger injectors, intercooler, and larger fuel pump. (your engine will need to be in good nick to go turbo though)
That'll shock a few people especially when your pulling away from then 
Cheers
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kombi_kid
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| posted on February 10th, 2004 at 09:53 PM |
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i plan to go watercooled down the track this is just to get the kombi on the road and have both 2L EFI and 2L carby motor
cheers
rhys
it aint just cool its aircool'd
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mnsKmobi
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| posted on February 11th, 2004 at 08:09 AM |
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If the FI and the motor it's on are in good condition I'd use it in preference to the carb motor.
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kombi_kid
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| posted on February 11th, 2004 at 05:10 PM |
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does EFI have any prone problems and is the EFI parts expensive??? dont know the condition of the EFI unit or the motor although the motor has good
compression
cheers
rhys
it aint just cool its aircool'd
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KruizinKombi
A.k.a.: Col
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| posted on February 13th, 2004 at 07:48 AM |
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I have heard that stock efi motors run lean at revs, but then other people I've spoken to believe that this isn't true. I'm undecided,
so you'll have to make your own decision on this.
My efi 2L ran hard with very little maintenance. My biggest problem was sticky injectors, because I kept forgetting to put the Mobil Fuel Injector
Cleaner in every third tank like my mechanic told me to. I believe PULP would render the stuff obsolete now though. :thumb
The only other problem I encountered was a blown diode in the control unit, which caused it to run on three cylinders. Trouble is, when my mechanic
cleaned one, it moved to the next injector.  Took him about 2 hours of
removing, cleaning and testing injectors to work out what the problem was!! :jesus
Kruizin Kol
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kombi_kid
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| posted on February 13th, 2004 at 09:39 PM |
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yer
dad reacons not to use the EFI motor cause u can get these sorts of problems!!! but i like the idea of turnin the key starting straight away and not
tuning carbs!
cheers
rhys
it aint just cool its aircool'd
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DoNkEy
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| posted on February 15th, 2004 at 02:54 PM |
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are FI 2l engine rare? I am after a kombi, FI be nice to have but are they common?
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kombi_kid
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| posted on February 15th, 2004 at 08:13 PM |
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abit more common then type 3 EFI's!!!
cheers
rhys
it aint just cool its aircool'd
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seagull
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| posted on February 15th, 2004 at 08:28 PM |
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My mates has
holden camera set up works very well Up hills ect no problems
Looking for that special lady : PM me for coffee & cake
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KruizinKombi
A.k.a.: Col
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| posted on February 16th, 2004 at 10:18 AM |
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Rhys, the problem I had was a once off, and considering how little maintenance my 1st kombi got in the 8 years of hard use I gave it, it did extremely
well. Not to mention the fact that it was a 76 model that had probably not seen much maintenance prior to me owning it. I would definitely recommend
FI over carbies. :thumb
Donkey, FI engines aren't exactly rare; I believe that most 2L '76 models were FI, as were a lot of 1800 '75 models. The problem is
that in the 70's, FI was generally misunderstood, so a lot of owners opted to remove the FI setup and revert to carbies. As a result, the FI
setup is somewhat uncommon these days, but not exactly sought after either, so relatively cheap.
As seagull indicated, other FI setups can be adapted to the kombi motor quite successfully. The kombi setup only has a 9 stage (from memory) vane-type
airflow sensor and is very simplistic (and inefficient) when compared to the systems from later model cars. The danger when using EFI from another
vehicle is that other vehicles are not mapped to provide the fuel requirements for a kombi, which is particularly important as the kombi is air-cooled
and has more potential to overheat than a watercooled engine. This may not be an issue, but should be checked to make sure and the system chipped or
remapped to suit the kombi's requirements.
I personally believe that the better option for those not wishing to use the stock FI setup would be to utilise a programmable aftermarket EFI setup,
perhaps with the stock FI manifolds. While this is more costly, a decent aftermarket system will have more load points, and more sensor inputs so it
can more efficiently determine the fuel requirements of the engine. A really good system will utilise an EGO (Exhaust Gas Oxygen) sensor to constantly
retune itself as you drive. Higher end units will also control ignition timing, and can retard the ignition when the engine gets hot to prevent
engine-killing pre-detonation. :thumb
Kruizin Kol
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kombi_kid
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| posted on February 16th, 2004 at 09:44 PM |
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thanks for that colin helps alot!!
cheers
rhys
it aint just cool its aircool'd
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Robo
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| posted on February 17th, 2004 at 06:45 AM |
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Hi Rhy's
I hope you dont mind me adding to your question (post) Im not trying to hijack it, I just want to know a bit more about it.
I would like to know more about this myself. Everyone seems to drool over twin Dellorto's, but from most mechanics I have spoken too (Not VW
mechanics) Fuel injection is a much better option. with the price of dual Dell or Webber carb set ups ($1500-$2500) Fuel injection may be a more cost
efective option. What sort of set up costs would be involved in doing this.
Boxer Power
Member of DMLRK.....Die Mittler Lebuns Resto Komeradschaft
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