mazda has different part numbers for the s4 and s5 N/A clutches. I thought that the flywheels were the same dimensionally, the only difference being the weight.
So what is the difference between the two?

 

i have no idea, ive used them both ways. it would be best to get the correct one for your car

mike

 

The s5 tranny is the same as the older ones, correct? if so, it probably is just a sturdier clutch. The reason i ask is I am going to use an s4 motor with s5 internals and flywheel but mated to the older tranny.

 

for n/a im assuming the tranny is a lil beefier for the S5 considering it made the jump to 8k redline from 7k in S4.

 

Hmm..I just want to make sure that the number of splines are the same, that way I can get either depending on the best deal I can get.