85 GS with a 90 13B non turbo ?
09-05-04, 12:44 AM
#3
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You might want to research your motor a little on the "search" in the 2nd gen forum.
There is something about the 90 model engines that is different (I believe all of them, maybe just GTU's I'm thinking of) Something about light weight rotors and/or higher/lower compression?? I believe you want the lowest compression possible on a Turbo (If I have learned correctly here). I'm sure light weight rotors would be a big plus for Turbo. I know the '90 GTU's had light weights and redline was like 8 or 9,000.
I need to do a little more reading myself cuz, when (sorry, I mean if) my 12A ever blows I'll be looking for one of these suckers to replace it.
There is something about the 90 model engines that is different (I believe all of them, maybe just GTU's I'm thinking of) Something about light weight rotors and/or higher/lower compression?? I believe you want the lowest compression possible on a Turbo (If I have learned correctly here). I'm sure light weight rotors would be a big plus for Turbo. I know the '90 GTU's had light weights and redline was like 8 or 9,000.
I need to do a little more reading myself cuz, when (sorry, I mean if) my 12A ever blows I'll be looking for one of these suckers to replace it.
09-05-04, 09:55 PM
#5
FD > FB > FC
I atempted this swap and had it completely done but it didnt run right due to a damaged wiring harness. You need two harnesses, the main harness from the second gen and the engine harness. the two harnesses meet at the S5 ECU.
You leave the engine harness alone, but you have to strip the main harness down th jsut enough to power the ecu and run the ignition system
I have made quite a few posts showing my project before I narrowed it down to a bad harness, and changed to a weber.
But you know what if I could have done it all over again I would have just done the weber in the first place. It makes more power.
The S5 second gen had the additon of a higher compression ratio (9.7:1) and lighter rotors. Also the intake manifold had a variable dynamic intake system that allowed change the length of the runnners so you can have more top end power.
The ECU is twice as fast as the S4 one and doest flood as easy either. Has an on board diagnostic system too (the s4 did this as well as the gsl-se)
But honestly, id go with a carb, I wish I hadnt wasted all the time I did with the fuel injection.
You leave the engine harness alone, but you have to strip the main harness down th jsut enough to power the ecu and run the ignition system
I have made quite a few posts showing my project before I narrowed it down to a bad harness, and changed to a weber.
But you know what if I could have done it all over again I would have just done the weber in the first place. It makes more power.
The S5 second gen had the additon of a higher compression ratio (9.7:1) and lighter rotors. Also the intake manifold had a variable dynamic intake system that allowed change the length of the runnners so you can have more top end power.
The ECU is twice as fast as the S4 one and doest flood as easy either. Has an on board diagnostic system too (the s4 did this as well as the gsl-se)
But honestly, id go with a carb, I wish I hadnt wasted all the time I did with the fuel injection.
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