so i've noticed that my car (05 6mt g35 coupe) has been making wierd grinding/ chattering noises when its under 2k rpm and a mild variation of that when its in neutral, almost sounds like a diesel truck but very mild, i had the clutch/ flywheel replaced about 15k miles ago, i feel it may be the transmition but im not sure the gears catch fine and the car drives fine. any ideas?

 

It's normal. My 05 6mt does it too.

 

learn how to drive a mt and not grind the gears

 

did you replace with an oem or aftermarket flywheel? The noise is normal. If it's the latter, it is just likely to be more noticeable.

 

my G35 does it too but sort of unoticeably its normal but it happened after my Cold Air Intake but found out its normal as well

 

It's clutch chatter when you're in neutral, not stepping on the clutch. That's fairly normal for most aftermarket clutches, a definite if you installed a lightweight flywheel with the clutch. If you have chatter on a stock clutch, it's the bearing.

(I think) the sound you get when accelerating under 2k is the motor.

 

Input shaft bearing, very common. you can confirm by stepping in on clutch, if it goes away, then I'm right. That's a tear down

 

yea that happen to me and replaced my clutch since it was burned from previous owner and also the bearing and installed a lightened flywheel the noise just got a little quieter but not as noticeable as before i changed that stuff

 

The noise you hear right now is just the flywheel... wait until the bearing starts wearing out...

 

i said imput shaft bearing, not pilot bearing

 

idk hopefully I'm just hearing normal engine noises and I'm paranoid, also Saturday I now noticed sometimes in neutral and between 2.8k and 3.0k rpm I hear a very loud chattering noises, my auto proffessor thinks it might be a loose heat shield on my exhaust rattleing, I hope so, car still drives fine, I rarly even don't have asmooth shift so I'm not to worried about grinding the gears, I never slip the clutch either, other than noises my car runs/looks great thnx for the advice tho

 

having kind of the same problem...when the car is cold and step on the clutch at neutral something sounds like its grinding (but this only happens once or twice a week on a daily driver)

took it to the mechanic twice who is 10 miles from my house but whenever i get there the noise is gone....this happened twice..totally felt like a dumba** when i told my mechanic theres a grinding noise but nothing was happening -___- lol

 

Hey awais786. Mine is doing the same as yours. I got a new release bearing from Infiniti and it completely went away for 500 miles and now it's back. Any suggestions. PM me please if anybody does. Thanks

 

Do you guys have after market exhaust? My G has always made that sound under 2K rpms when accelerating. Once I get over 2K, it goes away. Either that or I just can't hear it any more. I have CAI, high flow plenum, light weight pullies, light weight flywheel, headers, test pipes and a Stillen exhaust.


Later,

Ray

 

it came back again? thats weird did you try to take it back to the dealer? mine still makes the noise...i guess im just gonna wait it out till i replace the clutch..