Looking for a 1989 944 fuel injectors Base coupe model

Andy26 · 11-25-2014, 10:40 PM

Hi guys. I recently bought a 1989 944, it caught fire on me while i was driving and i'm looking for 4 fuel injectors. Here is the info of the car:

1989 Porsche 944 Base Coupe 2-Door 2.7L 2688CC l4 GAS SOHC Naturally Aspirated

Jfrahm · 11-26-2014, 05:35 AM

If you check the Bosch part number it might be compatible with a more common injector

If this is correct:
Références des injecteurs des PMA

Which is supported by this page:
Stan Weiss' - Electronic Fuel Injector (EFI) Flow Data Table

Then the nearby Chrysler injectors might be a good option (3.8L V6). There are even some upgraded 4 hole injectors that might work if this is indeed the case and for less than $100.
I am running 4 hole injectors on one of my 928s, they are newer, cheaper, quieter and probably deliver fuel in a more easily atomized way than the early injectors.

-Joel.

v2rocket_aka944 · 11-26-2014, 07:25 AM

Any 944NA fuel injector should work.

kdjones2000 · kdjones2000's Garage

Not so sure about that.

The same PN is used for the injectors up through '88, but the 2.7L engine calls out a different PN according to PET.

I think that this is a 1-year only injector, so you will need to find the flow rate and impedance if you want to find aftermarket alternatives.

Andy26 · 11-26-2014, 09:16 AM

i found some of earlier year models but all websites said that those NA injectors will not be compatible with my car. I know 1989 was a one year model with a 2.7L engine so its getting so hard to find the injectors. I was wondering if i could use some newer ones or like
Jfrahm said if i could use those Chrysler ones

porschetub · porschetub's Garage

Quote:

Originally Posted by kdjones2000

Not so sure about that.

The same PN is used for the injectors up through '88, but the 2.7L engine calls out a different PN according to PET.

I think that this is a 1-year only injector, so you will need to find the flow rate and impedance if you want to find aftermarket alternatives.

Yes they are a differant number,the earlier type will work however,I noticed no differance how my car ran when fitting 85 2.5 injectors to an 89 2.7 engine.

Jfrahm · 11-26-2014, 11:23 AM

There might not be a compatible 4-hole as your I believe are low impedance, but going down the ol' rabbit hole leads us to a listing with the OEM part number

Fuel Injector Chrysler 4554044 | eBay

There are listings for 4-hole injectors for that part number, but they might be high impedance. The 911 guys with DMEs I *think* say it is OK to run high impedance injectors and the driver circuit is cool with it. My 928 I put the 4-holes in is LH injection and high impedance originally. These assumptions are assumptions (he assumed) so I would not bank on any of it and I suggest you do your own research.

I suppose that while there are not a lot of 2.7's around many of the heads have been used for 3.0L turbos and thus the original injectors are gathering dust. You might post on a popular 944 turbo forum to find some for cheap.

-Joel.

tkddave951 · 11-26-2014, 10:57 PM

The N/A injectors are a different size that the turbo ones. I have a set off of a 86 turbo which should be the same size. If interested make me an offer.

Jfrahm · 11-27-2014, 05:45 AM

Sorry I should have been clearer. I was suggesting he post on the Turbo forum for leftover 2.7 injectors from a big turbo build utilizing the 2.7L head. In one of those builds the stock injectors from the head would have been disused. There are probably a few people on the RL turbo board with these injectors as people have either done the builds or are hoarding parts in preparation.