S4 turbo rotors in S6turbo engine
 

I have search alot of places and cant find an answer.

Basically i am putting S4 turbo rotors in my S6 engine.

Now which counter weights shall I use??
Can I use the FD front counterweight and FD flywheel?
or
Use the S4 front counterweight and FD flywheel?
or
do I have to use the S4 front and rear counterweight and then use a FC flywheel and bolt my FD clutch to it?

Thanks

to me it would seem that you'd need to use the S4 Turbo front and rear counterweights, then get an aftermarket flywheel for the S6 separately. short of that, i think you'd need to get things rebalanced in some way.

why not just use what u want and have the whole rotating assembly balanced.

You can use ther S4 rotors as long as you have the matching front and rear counterweights. The other option is to have them properly lightened to match FD rotor weights, use the s6 C/W's, and have the whole rotating assembly balanced. This would be the best method.

But, if you get the C/W's original to the S4 rotors, they'll be factory balanced and as long as you're not revving to 9500+RPM I imagine you'd be fine.

Cheers people.

I will use the S4 front and rear counterweights and get myself a new flywheel.