I have just aquired the intake manifold with the wiring harness and all of the sensors for a SPFI setup. I know that I need the wiriing harness and ECM plus the fuel pump and presure regulator. It also uses a "crank sensor". Do I need to get the distributor and change the drive gear as well? Any tips would be appreciated. Thanks

YEPABUS

It's been done, and I plan on doing it as well. You will need the disty from an 85 or 86 SPFI EA82. You have to put the drive gear from an EA81 disty on it, and also cut off one of the mounting tabs on the side of the disty casing. The manifold will bolt on, and all you have to do is wire it up. Which shouldn't be a huge deal. The wiring harnesses usually come apart into "engine" and "accessory" bundles anyway, so an EA82 SPFI wireing harness should work without a lot of modifications.

 

You should mount the fuel pump under the hood, and just have your stock fuel pump feed it. Since the lines in an EA81 car are not designed to handle the SPFI pump's pressure.

 

GD

What he said, except that if the setup you have (wiring harness, ECU) are from an 87+, you will need an 87 + distributor

I seem to recall that there was something about the 87+ disty that wouldn't work.... but I can't remember what.

 

GD

after trial and error, i stuck the fuel pump in the stock location(under rear passenger seat, under the car) and replaced the two pieces of rubber with high pressure hose. when it was under the hood, the high pressure pump would run out of gas.

 

should be an easy swap, just stare at that harness, it will be the toughest part, that and finding an efi y pipe, unless your ea81 has an o2 sensor. should be fairly easy, have fun.

It's been done, and I plan on doing it as well. You will need the disty from an 85 or 86 SPFI EA82. You have to put the drive gear from an EA81 disty on it, and also cut off one of the mounting tabs on the side of the disty casing. The manifold will bolt on, and all you have to do is wire it up. Which shouldn't be a huge deal. The wiring harnesses usually come apart into "engine" and "accessory" bundles anyway, so an EA82 SPFI wireing harness should work without a lot of modifications.

 

You should mount the fuel pump under the hood, and just have your stock fuel pump feed it. Since the lines in an EA81 car are not designed to handle the SPFI pump's pressure.

 

GD

Is it possible to interchange some of this stuff, such as the SPFI setup from a 1989 to include the wiring harness and use the ECU, Distributor and fuel pump from a 1985-86? Or is the an issue with the SPFI Injector being different?

The issue is that the disty and the ecu MUST match. The 87+ disty doesn't give the correct signal to the 85/86 ecu, and vise-versa. As for using the rest of it, I couldn't tell you, but I'm sure that some parts are the same.....

 

GD