hey im about to take aprt my motor (a 88 T2) and i was wondering if i should switch out my rotors for S5 rotors. do i have to change anything else like counter weights or something? will it be in improvement performance wise? ok thanks

Gabe

 

anyone?

 

No. Use the existing rotors. Very little point in going to S5.

 

what about using FD rotors is ther a benifit to that?

 

FD rotors are the same as S5 TII.

 

i thought the the S5 rotors were lighter then S4, does that make any diffrance at all?

 

http://www.mazdatrix.com/faq/rotorwgt.htm

S5 TII rotors are .5 LBs lighter and have 9.0 compression instead of 8.5. But if you have a good set of S4 rotors, then there's no point going to S5 for the marginal improvement. You would also have to change the counterweight and flywheel.

 

cool, thanks Aaron

 

yea bcuz the previous owner of my TII had rebult the engine and put FD rotors in with S5 counterweights and an S5 flywheel. so i was wondering if there was any real advantage to this?

 

Really no advantage since FD rotors are pretty much the same as s5 TII rotors. Same weight, same compression (9.0), and thats why one could use an s5 TII flywheel and s5 TII counterweight.

Other than that I'd say it pretty much comes down to what compression u would want to use with your setup. Back in the day when i was all motor, i had s5 N/a rotors, and s5 N/A flywheel/counterweight combination in s4 n/a motor. This has its advantages for all motor since it has the lighter rotors with the HIGHEST compression!