aluminum vs steel (oem)
 

if i had an aluminum underdrive pulley would it make much of a difference to my motor if i changed it from (oem steel) to the aluminum one ?

underdrive crank pulley or everything else??

just an underdrive crank pulley i only have an alternator hooked up to it :)

no good, the crank pulley is also a harmonic balancer, so if you don't want your engine to shake itself to death internally, then leave it alone.

BTW, you can lighten your flywheel for the same results.

ya i wouldn't touch the crank pulley.... if you want quicker revs and such just shave your flywheel down a little, while the tranny is off may as well get a nice clutch too :thumbup:

i have unorthadox underdrive pully's...its a HUGE weight difference...and i noticed a diff......i also have many other mods but i like this mod......

thanks man i have come to the conclusion that i will give it a try if i don't like it or notice any adverse effect i will keep it if not i will sell it im getting it for free :) so im not concerned just wondered if it was worth the work