Originally posted by Richard 350z@Apr 10 2004, 08:36 PM
I have the UR pulleys, but can't tell you excactly the gain from them, as I added a lot of my mods at the same time. Anytime you reduce rotational mass, you are freeing up hp.
For a real hoot, try the Tilton 8 lb. flywheel (but be prepared for very difficult launches from a dead stop).
Originally posted by Daking350Z@Jul 3 2004, 06:33 AM
same with mine when I had it..You wont believe how much lighter than stock it is!!
not sure if pulley will effect the 'power-steering' but it was a great mod for me.Is there a noticeable difference in the power steering at low idle?
So what exactly are some long term negative effects? And would these be more useful on an 06 with the 500rpm rev limit?Is the stock Z crank pulley also a vibration dampner? If so there can be long-term negatives by replacing it with a non-dampning, lightweight pulley. If it is not dampened, then the reduction in rotating mass will make the engine more responsive. The engine will not produce one more horsepower at the crank, but it will allow everything in the drive line to accelerate faster. This means the car goes faster.![]()
Harmonic Dampner is what you are refering to. This is used by older domestics, but most of imports use rubber rings and a lot don't have one at all, like our 350z. Therefore, after market crank pulley will not harm your engine.Is the stock Z crank pulley also a vibration dampner? If so there can be long-term negatives by replacing it with a non-dampning, lightweight pulley. If it is not dampened, then the reduction in rotating mass will make the engine more responsive. The engine will not produce one more horsepower at the crank, but it will allow everything in the drive line to accelerate faster. This means the car goes faster.![]()