Nismo 6mt owners: Excessive transmission chatter?
 

Hey guys,

2nd gear low rpm (1200ish) crawling in traffic I'll hear chatter from the transmission. Not sure if it's the flywheel, clutch or tranny itself. It does seem to get worse the longer the car has been driven so maybe it's connected to temperature and heat. 3rd gear does it at the same rpm too...not that I usually drive that low rpm but I was curious to see if other gears would do it too which is how I found out about 3rd. Last week Nissan replaced the tranny due to a grinding gear so the new tranny only has 160 miles on it and I've been driving it very easy. The tech stated that he didn't touch the clutch and flywheel.

Not sure if the Nismo Z models come equipped with Nismo flywheels, so that's why this is specifically directed to Nismo owners. But if we share the same flywheel with our base and non-Nismo counterparts, I'd welcome that feedback :driving:

Is there a temperature connection with the chatter and does the fact that this happens in more than 1 gear point away from an internal transmission issue?

Thanks!

Mines has always done that, when it was stock and now with the 6 puck clutch, so I'd say it's pretty normal

Was yours related to heat? Meaning the longer the car has been on, the worse the chatter got? Yours was in 2nd and 3rd gear too?

I noticed it mostly in 1st after a lot of driving yea

Can't hear chit with mine. Too much exhaust noise. :D

Started noticing it in 1st now. It's definitely temperature related. The hotter the car gets, the worse the rattle or chatter. Does the fact that it happens in 1st, 2nd and 3rd gear turn away from a tranny issue and more to a clutch or flywheel issue?

Dropped the car off with the dealer. Took a ride with a tech and he didn't say it was normal.

Basically, 2nd gear very low rpm, around 1100 or so, light acceleration and it'll sound like a cement mixer with a lot of chatter. Going into 3rd at low rpm does it too. Sounds a bit like this guy except he has a 350z with aftermarket clutch and flywheel setup

Listen to the 0:27 mark
https://m.youtube.com/watch?v=YyFgTg57j0Y

I don't think an oem setup should sound like this. I'll hear more on Monday hopefully.

This is normal. Happened with 350z's and g35's alike. My genesis even made this same chatter. My 370z makes the same sound as well.

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The 0:27 mark in th video... That's the noise yours makes even with an oem setup?

https://m.youtube.com/watch?v=YyFgTg57j0Y

That's a lot louder than what I'm used to hearing. that sound, I believe, is normal.

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Makes me wonder if my car already has a lightened flywheel that's causing this chatter. I bought it used so it's possible. Any way to tell aside from dropping the tranny?

I don't think an oem setup should chatter like this at low rpm and no one has replied saying theirs does this too. But I ask again... does the fact the chatter happens in gears 1-5 at low rpm (1200ish) point AWAY from a gearbox issue?

Nah it could be. No way to tell unless you drop the tranny. I do know my brand new 2016z did this with only 4 miles on it. Its not super loud but it does chatter especially after the car is warmed up some. Depress the clutch and chatter is gone. Release and the noise returns.

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From what you're saying it seems like this happens at idle with you. Mine happens low rpm in most gears... around 1200 rpm.

I can't figure out what you are doing to get your tranny to chatter at that low of an RPM. Are you lugging it in too high of a gear at slow speeds? Try downshifting into a lower gear. IF you lug the car, you will get strange tranny noises.

Yea, try this.

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