Originally Posted by Peak350

There is an infinite about of debate that has occurred on any number of forums surrounding this. When I had my E36 there was a direct correlation to the oil pump drive nut backing off and the oil pump no longer being driven, this was because the motor shook around more with the removal of the crank pulley and dampener (and replacement with a UR pulley). The issue was present even without this mod, but was almost gauranteed with it. There was however, no record of long term engine degradation that would indicate a correlation (much less causality) between the mass dampener removal and the bottom end failure.

Theoretically, the crank is internally balanced, and the rods/pistons are balanced to each other to some extent, and the vibrations I feel are just the "less" dampened forces that were already present on the crank and main bearings (and caps). I'm too concerned with it, its something I've never seen a list of failures from to even suggest a correlation, much less a list of failures that would suggest a causality.

Originally Posted by HR350

Sorry to kind of hijack this post but do you have much clutch chatter with your setup? If so, is there a way to reduce it... Say getting a sprag (spelling) clutch over a solid one?

Originally Posted by Peak350

Its there, honestly I just want to buy an exhaust now so I don't hear it.

The warmer the tranny is the louder the gear chatter.

1k-2.5k rpm's under load it sounds like a dump truck (best way I can describe it). The chatter at idle in neutral is there, but I don't really mind that as much.

I still have the stock clutch line and delay valve, and the stock throwout bearing. Dunno if they put a new pilot bushing or not. They were rushing on the install, but everything looked perfect aside from the flywheel and clutch disc.

Originally Posted by HR350

Would a heavier flywheel cut on the chatter? Say a Nismo flywheel instead of the JWT?

Also Anyone have any thoughts on weather or not a sprag clutch will help on the chatter?

Originally Posted by Peak350

Forgot to post it.

Stock and JWT are both spring hub clutches.

The flywheel weight will reduce noise, but the light weight flywheel is desirable for other reasons.....like performance.

Originally Posted by HR350

Haha, thanks. The performance part is pretty oblivious but I'm not sure if I'd rather have a little gain with a little chatter or a decent gain with an annoying amount of chatter... How bad is the chatter with the windows up or does that even make a difference?

I know this may be stupid but are there any sound clips of the clutch chatter?

Originally Posted by Peak350

I've gotta borrow my friends video camera to really capture it, but windows up radio on I have to listen pretty hard to hear it, even then, its pretty easy to ignore. My gf only notices it when I point it out and she hears everything.

I know I'm justifying it - I hated it before when I'd ride in my friends 06 with the same combo, but the driving difference and the reality that I rarely hear it makes it ok for me.

All the Z's sound the same with what I'm talking about, so maybe you can find a clip from someone else. Also - you can't upgrade the clutch without the JWT flywheel for what its worth.

Originally Posted by 350Zimo

Peak350 can you take a video clip as you drive and as the car is in neutral idling. i will be installing mine next week on tuesday.

Originally Posted by HR350

That's a good idea

Originally Posted by Peak350

I'm trying to get my friends video camera. My digi cam doesn't take sound clips worth posting.

Originally Posted by Peak350

I'm trying to get my friends video camera. My digi cam doesn't take sound clips worth posting.

Originally Posted by 350Zimo

since it revs way faster, does it feel like it accelerates faster as well or its the same thing.

Originally Posted by 350Zimo

you still on the stock wheels + tires?

Originally Posted by 350Zimo

i like the GT wheels. they are 10", you can stick pretty wide tires on them. time to get some rubber.