Possible Nissan OEM clutch system issue - Everyone Read

SeeyaBud86

Ever since I bought my Z I've had a whine when accelerating in all gears. In fact, when my car was stock, on the freeway it was so audible cruising at higher rpm that I had to put my music up high. I don't have the "lurch" into first, but it definitely does not like going into first gear on a downshift (15mph and below).

I also have noticed that my car has a problem with shifting into second from first gear when redlining. NewYorkJon34 lives near me in Naples, and he has the same problem too. We have concluded that we have to give the car a second to settle itself, with the clutch engaged, to get it to shift into second. I have also noticed that trying to shift too fast makes the gear grind, it's not that I am shifting improperly but sometimes I have to almost granny shift it. This problem seems to get better, not fixed, with SyncroRev off. At first, I thought maybe I was just bad at shifting in general, but my father recently bought a Z06 which I can shift perfectly at redline in all gears (don't tell him that =p). So the only thing it must be is the tranny in our car.

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MTL370z

I have the EXACT same issues. Annoying whining noise when cruising on the highway under acceleration, and of course the 1st to 2nd grind when trying to shift fast at high RPM.

While I dont agree that our transmissions are horse $hit, they are definitely not very refined. On top of the problems mentioned above I find it rattles and chatters all the time.

SeeyaBud86

Yea I've noticed that driving with Syncro and VDC off helps a little bit. In my opinion I think the problem is with Syncro. I think it makes the tranny "think" too much. I don't know how to explain it.

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alb84z31t

That is my opinion too. I usually turn Sync off when I drive. It just seems like the performance of the tranny is stifling under sync rev.

RCZ

Very interesting. Mine did too, but have since gotten smoother after i switched clutches. What is this about realigning the shift gates??

Hey man, I have the same exact whine in all gears, only while accelerating. Have you pinpointed where it is coming from?? You are still stockish right? Take it to the dealer and see what they tell you, it may be a simple fix. Also, out of curiosity, are your rear axles clicking?

My car rarely lurches anymore since I changed my clutch and things have become way way more livable. I know what you're saying about the shifting too fast too...its like it doesnt want to let you get into gear until the engine speed has been reduced a bit. You can muscle it in there, but it feels like you're forcing something...

We all have the same stupid problem and I have a feeling the whining we are hearing might be a side effect of the shifting issues. Maybe the great SRM system isn't so great after all and is actually causing issues in the long run...I'm going to swing by the dealer and ask a tech about it. God forbid someone who works on these cars all day everyday might know something about the issue...

I too am very very tired of this transmission, it literally ruined the car for me.

DIGItonium

Here's a post from the 350Z forum:
shifter re-alignment - MY350Z.COM Forums

I don't think I'm that handy with tools to do this job, so I may have my dealer do it for me on the next oil change.

Transmission oil is still factory. I'll get it changed once I pay off the turbo install stuff. BTW, are you experiencing clutch judder (shakes)? I had this problem when the car was new up until the CSC failed, and it went away after getting it replaced. With the ZSpeed CSC, it's coming back. Sometimes it doesn't judder, though. My only fear is with the modification required to seat the new CSC that it might not be 100% aligned.

What makes a clutch judder

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