You guys do know that when you accelerate faster, it's because you're producing more power... so to say that with lighter flywheel/pulleys, didnt make the car more powerful, but made it accelerate faster contradicts. Fact is there is a damper on the stock oem pulley. However, the big name brand pulleys such as UR, Stillen, etc, are CNC'd perfect to zero vibration. The STOCK pulley is not balanced, it's iron steel so the damper isn't just there for the crankshaft. Flywheels on the other hand aren't protruding the way crank pulleys are so vibration from stock and aftermarket flywheels are minimal in comparison.

All engines vibrate from the torsional stress put on the crankshaft. A lightweight pulley increases crankshaft bearing wear only marginally. It's only a concern with forced induction because the torsional stress is magnified.

 

LoL! Thread revival.. jeez man, this thing is almost a year old...
You are not making more power, you are simply freeing up weight from the rotational mass of the drivetrain. *Your engine will rev to redline faster and with much less effort"..

You are also incorrect about zero vibration.. I believe this has been discussed to death on this board.. you may want to start reading up.

 

I have pulleys and flywheel,. The car revs a lot faster and feels like it's not such a struggle for the motor during acceleration. Only problem is the chatter from the lightened flywheel is annoying at times.

[edit] oh an raising the dead FTL

 

^ yeah that annoying chattering...

I have both (agency pulley kit) and (act extreme clutch kit). I didn't feel THAT much of a difference. With the lighter flywheel it forces you to shift faster in a way because the rpm's drop between shifts alot quicker, can be a bugger at times. Both, stock flywheel and upgraded flywheel have pros and cons.
I felt no power difference with the pulley kit... could me just me but its definately not THAT noticable.