Quote Originally Posted by vteckidd
in all motor applications, the crank weight plays a HUGE role. but only in SUPER high hp applications.

Stock cranks can support 260whp all motor, and 700-800whp FI. The most i would ever do to a crankshaft is balance it. There really is no reason to lighten it so to speak. not unless your doing a trick motor in a drag car.

THe lighten flywheel part, well there is a deep divided stance on what to run. I like a light flywheel. will you lose HP, no, tq, yes. But hondas dont have TQ anyways so who cares. and we arent talking about 20 ft/lbs. we are talking MAYBE 5 ft/lbs at the most, if you lose any at all.

I would much rather have a car that revved quick and got me to my power band as fast as possible, than have an extra 5 TQ. However, lightened flywheels can cause traction problems. the motor will spin that much faster, so the transfer of power is much more instant, than if you ran a heavy flywheel.

I would run a 9lb. thats about the Norm, thats what i run. the 6-7lbs are crazy light, and i have seen problems with them warping. you also want a flywheel that is not all aluminum. they warp easy, especially with a strong clutch. I would look for a lightweight Steel or steel alloy.

As far as the underdrive pulleys go, they SUCK. i hate them. Run the CTR pulley for the crankshaft pulley and leave the rest alone. unless you like to break belts and have them warp on you.
ok thanks that sums it all up for me you helped me decide to go with a exedy 9.4 lbs flywheel and ctr pulley..lol