I am thinking of purchasing a used na motor for fairly cheap ($600) from pete at fc3sracing.com. He said that it would cost around $1200 or so for the parts, and his labor to put it in.
Heres the thing, he said that he is going to use the na drivetrain w/ the turbo motor. I was wondering if that would work because I know that the motor and tranny will bolt, but the na tranny is also weaker than the turbo tranny. I was wondering if you could keep the na tranny, and put in a heavy duty clutch to use w/ the turbo to not damage the na tranny as much.
My other question is if you could use the turbo motor, and tranny, with the na driveshaft, and rear end. I have read up, and it said that you need the entire turbo drivetrain to do that, but I think I heard somewhere that the turbo tranny can work with the na driveshaft, and rearend. Is this true?

 

My personal opinion is this. I would NOT put a "heavy duty" clutch in the car. Rather I would "test" it out with a stock clutch in it to see what happens. I personally would much rather burn up a $300 part, rather than a $1500 tranny. Just my .02

 

The stock NA clutch will not handle the extra torque of a mildly modded TII motor (nobody stays 100% stock). I'm running a Centerforce dual friction NA clutch on my TII motor with NA drivetrain and it's fine. I'm running 12-13 psi on the stock turbo with a FMIC so I assume I'm putting down around 240rwhp and it's holding up extremely well. The clutch already HAD about 40K on it when I did the TII swap!! An ACT is also a nice choice but the standard ACT street clutch is more expensive than their 6 puck clutch for the NA. The 6 puck will hold much more power and is less expensive, but also much more of a drivetrain shock.

The NA tranny/rear will take the extra power just fine in hard driving but won't stand much drag racing abuse. If you're constantly launching, a TII tranny/rear is a good idea. For a strict street car, the NA pieces are fine.

 

I also had a question about the exhaust manifold. On my na, I have headers, and a straight pipe. Would that work in conjunction w/ the turbo motor, say in terms of increasing, or decreasing power output.

 

Nope. The exhuast parts won't fit.

 

are the rear dif as the same on na or tII cars?

 

No. Please read the FAQ. All of this is covered.

 

^couldnt find it