My 07 needs a new clutch and i have been looking into replacing the flywheel as well. After listening to a few chatter clips from lightweight flywheels i've decided that i wouldn't be happy with the extra noise. I've read that people have installed the nismo flywheel on their DE and that it has no chatter... but the DE nismo flywheel is seemingly different than the hr nismo flywheel (from what i can gather).

flywheel weights:
HR stock is ~30
DE nismo is ~23
HR nismo is ~14

BIG QUESTION: Has anyone installed a nismo flywheel on their vq35hr? Is it as quiet as stock? ... or, i guess, can anyone with a 2007-2011 true nismo trim package chime in on how their car sounds?

link to buy hr nismo (or google the part num for more links).
http://www.outperformanceshop.com/pr...2310-vqhra.htm


here is the sound i don't want (JWT): http://youtu.be/YyFgTg57j0Y

 

try southbend

 

I will get the Exedy Stage 1 when it's time.
Take a look:
Includes LWFW..heavier than HR Nismo..lighter than DE Nismo. This one (HR) is 18.5.
This kit does NOT include CSC..you use a STOCK HR CSC, since PP is not a DE type, it's HR design. At 18.5 lbs it shouldn't chatter and I've read accounts of no probems with this flywheel.

http://www.f1clutch.com/product.html...z-370z-g35-g37

 

Interesting info. I've never heard of a Nismo Flywheel for the HR's, but then again I haven't been looking.

I would strongly suggest including the ZSpeedPerformance HD Slave Cylinder, IF you're going with an aftermarket clutch.
It seems the varying levels of increased chatter in the aftermarket flywheels are linked to the weight of the flywheel. It also appears that going lighter causes increased chatter. You may also want to consider Southbend's flywheel for the HR (found on the same website as ZSpeedPerformance). Southbend claims that their flywheels will not "add the unwanted drive train/trans gear chatter noise associated with other LW aluminum flywheels".

Nismo and Exedy are great brands and may be what you're looking for. Just my thoughts.

 

weight has nothihng to do woth the chatter appearing tho. Although the lighter you get on an aftermarket, it does get louder... but you aint curing it unless youstick to OEM

OEM flywheel is a dual mass unit, ie separate pieces w springs and all sorts of REALLY weird looking stuff on it IMHO.

Looks very little like an aftermarket unit.
The flywheel doenst make the noise, its the gear/trans lash chattering away.
Even southbend will chatter being only a touch lighter... its stillnto dual mass.

THis chatter is totally not annoying unless you have a bone stock car.. i ahte rattles an squeaks w a passion, and it doesnt bother me at all.

 

Increase your engine RPM to idle of 1,000 rpm and you'll get rid of most idle chatter.

 

I think I would beg to differ. Heavier flywheel will definitely reduce chatter..you have more momentum going for you and that allows smoother engagement. Less noise and rattle for sure. I don't think anyone using the Exedy 19.4 lbs unit (DE clutches) is having problems. It's almost eveyone under 16 or so.

Where did you hear this?>>

Even southbend will chatter being only a touch lighter

 

from southbend ... and everyone i asked before i made my purchase.
Point beng is that once you go non OEM, your in a different animal altogether.. no chatter= stock.
aftermarket+=differing degrees of chatter, but its never going to go away fully unless your oem. etc etc.

 

Even with stock the system chatters. It just gets worse with aftermarket. I wasn't implying heavier flywheels eliminate chatter, just not as bad as lighter ones.

 

Who did you talk to at South Bend clutch?

Weight most definitely makes a difference in "AUDIBLE" chattering noise in the trans. I have installed quit a few South Bends and they make virtually ZERO noise. Install a JWT and it sounds like a cement mixer in the trans.

The reason they rattle is because it is not heavy enough to dampen the firing pulses of the engine which in turn rattles the gears in the trans.

 

Please direct me to where you found this hr flywheel. I searched through a couple vendors and came up with nothing. Are you sure its not the jwt flywheel you speak of?

 

I have a JWT and only hear chatter at idle. I just push in the clutch and it goes away. My car is loud anyways so it's nothing that even bothers me.

 

it does chatter, though at 18.5 lbs, it will be quiter than some, louder than stock - reducing mass = increased noise, there is no way around that. One piece flywheels do a better job and insulating the noises vs multipiece ones as well

I've used the Exedy setup several times, and it works great btw - one of the few aftermarket clutches to have a proper HR pressure plate, so the stock CSC can be retained. Although for those who want, afterkarket CSC's exist too

http://z1auto.com/prodmore.asp?model...ne&prodid=3990

 

Ok..thing is the Exedy HR kit doesn't come without the flywheel (the DE kit does).
So we can order the HD CSC with an HR Plate (say stock kit and flywheel)...you then leave the adaptor ring off it. Good to know.

 

what you are describing is not flywheel chatter, but a worn (or just noisy) throw out bearing

the chatter/noise/rattle/call it whatever you want that everyone talks about is heard in the ~1800-2600 ish rpm range. It's especially noticeable when moving from a dead stop (red light, stop sign). Depending how quickly you accelerate determines the length the noise last, but every single person with an aftermarket flywheel has it

 

it's technically the flywheel for the 370z