Pulley Size/Fitment: Z34 vs. R35

7419sundat

Ill try to help one last time. Every engine has a different frequency that the dampners is designed for. You need to figure out which one your trying. For instance if a race dampners was designed for 10000 rpm it probably wouldn't be good for your car. A daily driver one would obviously dampen at lower frequencies. Basically what if our engines need dampening at 3000 and redline and the dampners you chose didn't do that extreme vibrations could damage your engine especially the more power you have.