This has been talked about before...... but whoever turbo'd a SPFI please contact me...I got some Q's.... I may have acceses to the parts I need...If anyone has doubt's or an opinion on this please let me know...

 

P.S. I will be using a top mounted Intercooler(cause my hoods is getting a hole in it! )

I also will be getting an aftermarket ignition control this spring+ other goodies

rguyver is your man, he did it, spfi on a ea81 in a hatch and turbo'd. dont forget the ea82 suspension in front, like i did on my wagon

 

i myself have mocked up a turbo and spfi intak/dist to an ea81, but thats all i got to. the difficult part would be the routing for the turbo plenum and intake, something about saab parts there.

 

you can find rguyver in msn groups, occasionally he will appear on the usmb, but not often

 

try searching for the old usmb board, something may be posted there

does anyone else have any comments or suggestions on this?

Styles, first off your wagon is BAM!

 

As a driver of mostly turbo'd Subies

here is a list of some of the concerns you may want to address.

1) managing your air fuel ratio when taking the intake manifold to positive pressures may prove challenging.

To my knowledge your SPFI ECU has no provision for enriching the mix at these air flows. A lean turbo engine is a short lived turbo engine.

2) Ignition timing control, you are starting off with a higher than factory turbo compression ratio. Now you add 5 or 6 psi of boost. The engine may suffer preignition, with no timing retard to control this, you could suffer holed pistons, hammered big end bearings, or worse.

I do not believe the SPFI system has a knock sensor/control built in.

WJM has turbo'd his SPFI block, but read any number of his posts on preignition and need for av gas. And he has fuel enrichment.

 

3) The oil in and out of the turbo is an easy bodge, as is the coolant flow. But they must be mapped out.

 

The under bonnet/coolant temps should also be considered.

 

Just some "other comments" like you requested.

Hope they help

yeah..... right now my car is runs lean in warm wether at full throttle...I was hopping to put in a fuel pressure regulator to fix the problem.

Yea, SS that will be a fine bandage,

you'll do just fine,

oh yea, your welcome.

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