Klunk !!!!!!!!!!!
 

So heres the deal, i bought my 370Z preowned with 6100 miles on it. Pretty much from day one when im going through say...a parking lot with speed bumps and people crossing and im at low RPM still in 1st. gear and when i push the clutch in...theres a klunk...the dealership says its normal due to the 2 piece clutch or something i don't know...its hard for me to phathom that such a nice car makes such a annoying sound.. So my question is...is it normal?

1st and 2nd are hard when it's cold. pump the clutch 2 or 3 times and it's much easier.

two piece clutch? Someone verify....

Wrong section of the forum, dude. You'd probably get more feedback if this were in the General Discussion section. This section is for feedback on the site itself.

^ I don't look at that stuff lol.

"Klunk" also tells us nothing. Maybe "Hard 'Klunk' when shifting into 1st and 2nd" or something for the thread title.

you have to really learn the z's clutch, first and second are really sensitive, so be really smooth with it so you don't get that "klunk" you're talking about.

In the first two gears if you mash the clutch in fast it will make a sort of klunk sound.

my BMW did a klunk when it was cold. I had it fixed because it was NOT normal.

So you are telling me that this is something that I will have to look forward to with the NISMO when I pick it up, huh?

What is the learning curve like? I mean, is it something that comes with time or just a quick adjustment?

I hear the occasional clunk but never when I'm smooth with the clutch. I always drove mustangs, and in those cars you put your clutch foot DOWN. With the Z you feather it, it doesn't need to go far to engage, so if you are hearing a klunk and it doesn't seem like there is any other problem...it's probably your driving.

It's annoying I know but it's normal. We all hear this clunk everyday. 350Z had this clunk as well.

ok cool and next time i'll put my thread in the proper area...what a relief that this is normal.

I don't think the klunk is normal, it sounds like something needs to be adjusted. Mine shifts great.

The tranny is noisy and makes clunky sounds. Its more apparent when your in a parking structures or next to a wall or something. The noise is a little annoying considering the type of car it is, but it is a very good solid performing tranny, and that's what counts.

On the other hand, ATs are flawless, for the benefit of those who prefer auto trannies.

:iagree:

Must be where the word, "clunker" came from...


:hides:

:koolaidwall:

Man who drives the AT may be a bit faster, but the man driving the MT is having way more fun :tup:

I had this clunk fixed at the dealer. They replaced the rear drive shafts and the clunk was gone. That was 4k miles ago. Now it is doing it again. Happens only when I backup or accelerate from a stop - clearly audible when you are parked in a garage. Sounds like there is play in the driveline. I'm afraid it will get worse over time. When I went to a Z meet in VA in August, several other 370Zs made the same noise, but no one there thought it was a big deal. I found this somewhere online:

Clunk
Clunk is a metallic noise heard when an automatic transmission is engaged in Reverse or Drive, or when throttle is applied or released. It is caused by backlash somewhere in the driveline, but not necessarily in the axle.

There is a clutch clunk and then there is the rear-end clunk that you are talking about. The rear-end clunk could be slop in the pinion gear, or axle side shafts. My old Datsun had major slop clunk from the diff, eventually I completely destroyed the rear-end trying to launch it.

Yeah it is in the rear-end. I am so surprised that no one else is complaining about that or think that it is normal. It is not. I can see the differential go out of business right outside the warranty period.

I have the same problem. It is actually quite a loud clunk. It is most noticeable when disengaging the clutch in first gear on a hill when the car is cold. (I have to go up a slope when exiting my parking garage). I've read that someone here took it in and the dealer rotated the drive shaft 180 degrees and coated it with grease, which fixed the problem temporarily. I haven't done this.

Remembering the old days when I did a LOT more on cars than I do now, I'd say this sort of thing could be universal joint play. Those were things that had to be replaced sometimes in cars. I'd say the more powerful the engine and the more it is driven in a, hmmmm, spirited mode ( ;) ), the more wear and tear it makes on those joints but I wouldn't expect it to show up till 50,000 or 100,000 miles. Dunno...

Hope you guys aren't getting drive shaft (singular) confused with axles...

The axle half-shafts have universal joints as well. The drive-shaft universal joint is a pretty sturdy piece so I wouldn't expect any failure there for a long long time.

half shafts have CV joints.

I'm guessing some people's clunks could be due to driving style and timing. The Z is throttle by wire, so there is a lag between pedal action and the throttle plate reacting. If you drive the Z like a car without throttle by wire, the tranny will still be under load when you depress the clutch. I found this to lead to my clunking. I just changed my foot timing a little and no clunks.

when i went to the dealership to bring this problem to there attention they said it was "normal".....also he said that there wasn't a recall but there was a bullitin sent out saying that the bolts in the rear-end had to be re-torqued to a higher pound. this wasnt the case for my car.

Does this mean an aftermarket differential will help alleviate the problem ?