question about turboing a N/A supra

Murd · 10-03-2006, 09:04 PM

You need to comp, you'll probably want to do internals too, as the N/A is 9.2/1 compression ratio, and the turbo's are 8.x/1 can't remember as I don't own a turbo, but it's low 8's. Another difference is the turbo block has piston oil squirters and a few other differences. The head is different, intake is slightly different, transmission manual is a W58 on a N/A, and it's a R154 on a turbo, along with all the extra's that go with it.

10-03-2006, 09:04 PM	#2
Murd 3" Exhaust Join Date: Jul 2006 Location: Vancouver, WA. Posts: 233	You need to comp, you'll probably want to do internals too, as the N/A is 9.2/1 compression ratio, and the turbo's are 8.x/1 can't remember as I don't own a turbo, but it's low 8's. Another difference is the turbo block has piston oil squirters and a few other differences. The head is different, intake is slightly different, transmission manual is a W58 on a N/A, and it's a R154 on a turbo, along with all the extra's that go with it. __________________ 1989 N/A Targa 5spd. Metallic Grey, w/grey interior. No mods done.