1990 St Swap

[Snafubmx234]

Hey guys. I have a few questions for you all, i'm going to see what you think.

I have a 1990 ST, with 170k miles on it, but still very very strong.

I want to do some type of forced induction. three options

buy a 4age, then buy the 4afe turbo kit and do a little bit of custom work. this would require me to put in low comp pistons and such.

Buy a 4agze, get a different tranny, do a front mount intercooler, and be done with it. probably a larger sc pully to pump the boost up to about 10-12 psi.

Buy a 3sgte clip, the MR2 tranny, and custom some mounts in.

I really would like to do the 3sgte, but i don't know how hard it will be on an ST. I've worked in a garage, i can weld, create a lot of custom things if i need to. I've rebuilt engines, so i'm not worried about that, just wondering how hard the 3sgte would be.

thanks guys.

Colin.

[Kelvyn]

Do you currently have the 4A engine then? Swapping to the 3S engine should be pretty straightforward. Most Celi's used the 3S-GE so you can borrow the mounts from one of them, they will bolt straight onto the 3S-GTE block. You need the MR2 turbo gearbox(with limited slip diff)and the driveshafts. Probably be easier just to get the engine/box/ECU/loom all out of the MR2. Should be a VERY quick motor, all the power of a GT4 without the power drain of the 4 wheel drive system.