Possible Nissan OEM clutch system issue - Everyone Read

DIGItonium

The issues I'm having with the aftermarket clutch can be remedied. I just need to take it in to bleed it again and try to make some adjustments. Member Zat_Zuma provided some advice because he also had the same issues. Other than that, the car is still drivable until I get the adjustments made. No regrets.

Check your PM.

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Brazilbro

Evo 10's have the same problem it seems

I guess its the clutch master that go's

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Juke AWD/240Z SR20
08 Evo 10(Stage 2) SOLD
Fastest Sport 6spd 370Z 11.8 @126.5SOLD

RCZ

I heard there is an extended throw csc in the works that might fix the issue. I'm not going to try it, Nissan sucks and I'm probably not going to buy any other nissan...ever...except maybe a GT-R down the line. Terrible experience and they have officially lost a customer.

DIGItonium

Have you listened to the GT-R transmission? It's not quiet. I revved it in neutral and can hear the clunking sound off throttle. Hopefully it does well in the long run...

You're right... it really spoils the fun in driving. It was worse in the '03 350Z with transmission replaced in '06. I couldn't get in gear at high revs, so it was embarrassing. It clunks so much, and it is so notchy my wrists hurt from shifting.

The 370Z transmission is an improvement, but still gets notchy and clunky (in 1st) at times. The master and slave cylinders... not so much. I don't track my car and already have issues.

I'm hoping Zat_Zuma's advice is enough to get rid of these hiccups and hopefully be able to shift into 2nd at WOT.

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RCZ

I mean...everyone can certainly drive AROUND the problem, but I have no interest in doing that. I want to drive my car the way its supposed to and the way it deserves to be driven. I find myself shifting slower and not wanting to rev the car out as much so I don't notice these problems as much.

Lug

In the past, I've read that other than syncro rev match, the tranny's were virtually the same between the late model 350Z and the 370Z. Can't find a source though.

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keep Chubbs in your pocket - Chubbs

babbagandu

I was driving my car today after having read the first few pages of this thread today and I am not sure if I have the same problem..can somebody explain it to me? I am referring to what the OP said about the car "lurching" forward when bringing up the clutch pedal in first when the vehicle is stopped.

I noticed that I don't have to give it any gas to start moving. All I have to do is bring up the pedal a little and the car hesitates slightly but it does start moving. I am used to this happening in my old 350z and G35 when the engine was cold, but never when it was fully warmed up. Is this what the OP was talking about?


Also, I sometimes feel like when I am taking off from a stop under normal driving, as I am bringing up the clutch pedal and giving it a little gas, I kinda feel some vibration in the clutch pedal just after I start moving and have the clutch pedal almost fully released. is this a problem? I'm not really sure if I am explaining it correctly but I never had this feeling in my 04 G35 or 03 Z


EDIT: nevermind I see now that the OP was talking about the car lurching forward when the clutch pedal is fully pressed to the floor. I don't have this problem, but are the other things I described ok? (especially what I described in the paragraph immediately above this)

SPOHN

Is there anything different about transmissions (physical) with SRS?

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tranceformer

There's someone on the 350Z site that's working on installing a 370Z 6MT into his 350Z. There's a few subtle differences but I think overall its not much different.

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Ray
2009 370Z Base Sport 6MT / 12.860 @ 109.09mph / 1.921 60ft / street tires
official 1/4 mile track times

DIGItonium

These things don't like fast shifting. There were a few members who are great at quick shifting to get the best times, but end up replacing the transmission at least once. You're right, you gotta be nice and it'll let you get through the gate.

The latest is CD -009. When the 350Z transmission was replaced in '06, I think it was a CD -006.

Slight vibration is normal. If the car shakes, that's clutch judder. It was bad out of the box, and 16k miles later the CSC needed replacement. The judder was virtually gone afterwards. With the aftermarket clutch and CSC, the car would judder quite a bit. It seems to get better the more I drive it, and engagements are getting smoother.

I'll get back with you guys after my next oil change (1k miles). In the meantime, I'm feathering the clutch more often to "bed" it. Hopefully it doesn't necessitate replacing the disc.

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Zat_Zuma

I wouldn't worry about slightly feathering the clutch to help break it in. I wound up breaking in my clutch and bedding it in; in about 30 seconds time. Clutch has never given me a problem since.






It was very stinky when I was done though

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[B]2009 & 2017 370Z Touring Sport Autos SOLD

Davey

Just this morning I bounced off the limiter in 1st and shifted to 2nd fairly quickly - for research purposes, of course - and I didn't see any issue. I think my 370Z tranny is slicker than my 350Z ('08) was but certainly nothing to write home about. But it gets the job done so long as you aren't expecting F1 style shift speeds.

It's subjective what "fast shifting" is - I can shift much faster than I actually do. That's because I would not expect a transmission to last long shifted abusively (i.e. as quickly as possible, at redline) at all. I also don't slam the clutch to the floor. I've never had a problem with my CSC yet either - and I hope I never do.

I think there are people with legitimate complaints who got shitty trannies, bad service work, etc. and I think there are other people who abuse the transmission and don't see why it doesn't hold together, and then there are other people who don't really have a problem other than the charmingly clanky/clunky transmission that Nissan wanted all of us to get - the clank and clunk and clutch chatter and throwout bearing noise are all stuff that the recent Z cars have had so I'm used to it, you can mostly drive around it, and it's generally a non-issue in any kind of performance driving conditions.


Edit: Not me, but I think this guy is "doing it right." He complains about people saying he's shifting too slow... Seems like it's about right to me, unless I've got a tranny shop sponsoring me.

RCZ

theres a difference between slamming gears and shifting quickly/swiftly at high RPM. I find that I have to slow down my shift so much, to keep it from feeling forced in, that my revs drop too much and I can't drive the car smoothly. I don't abuse my car, neither of my STI's had anything even resembling a worn clutch or transmission. Shifting was always smooth and precise. I can't stand driving my Z anymore. A transmission isn't supposed to clank and grind, thats just a sign of a poorly engineered part.

Davey

If an STI transmission is a favorable comparison, then I think you definitely have a lemon of a tranny. Mine ('06) was pretty comparable to the Z as far as notchiness and shift feel.

You definitely shouldn't be getting any grinding at any RPM so long as you aren't rushing the shift too much. The clank, well... You'll just have to live with that, or buy something else.

DIGItonium

^ I think much of our issues are from the South Bend Clutch and ZSpeed CSC. It wasn't too bad before. Other than RCZ, Zat_Zuma, and esfourteen also have the same combo like mine.

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