I don't think it is by design that makes this noise. It sounds like a typical sound when bearing or shimm is off or worn, or the fork/shaft.

I think you are talking about a different sound. There is another thread about this.

 

Well think what you want but I've had three G coupes and all of them made the exact same sound from day one.

Sounds like a design choice. The noise has nothing to do with the clutch, it has to do with the tranny spinning. If you listen carefully you can hear it "spin down" and go quiet a second or two after you press the clutch. It is more obvious if you rev the car in neutral while off the clutch pedal and then press the clutch down. The only part the clutch plays in this is that it controls whether or not the transmission (layshaft) spins.

05, 06, 08... all sound the same to me.

 

My car is making the same noise too!! I took it in to the dealer and they said its NORMAL!!! well i guess its normal.

 

My 350z sounded exactly the same as my G which sounds exactly like the video. It is the throwout bearing. I had a dodge truck that sounded the same, and a corvette and a.....

 

every manual car i have vere driven makes this noise. completely normal...the paranoia on this forum is alarming, you would think we all bought a 1996 hyundai excel or a Yugo or something...lol. Inifiniti make reliable and well built cars. Where does the doubt come from?

 

I echo your sentiments 100%. Yes, there are some who have had legitimate problems with their G, but for the most part I think we are way better off than the vast majority of new car buyers out there. I think that some owners have a sense that everything must not only be perfect 100% of the time on their new cars, but that anything that they are unfamiliar with or don't like is a defect and that "Infiniti is trying to personally screw them". I guess a lot of folks are priviliged enough to never have driven a really crappy car to have a comparison to know what serious problems really are.

 

i dont know what manual cars you've had before that sounded like this, but my 88 prelude 5sp, 93 sentra 5sp, 96maxima 5sp, friends 00maxima 5sp/ 08 mustang 5sp did not sound like this. nor did i get a different sound in any of the aforementioned cars when i engaged/disengaged the clutch at a dead stop or under load as i do in this car. infiniti is saying this is normal for the G but many people on this forum, including myself, have never had this noise come from their old junkers. thats why people are alarmed.

 

Those old junkers had equally junky transmissions and your Infiniti has a very stout one. For example, the stock clutch is good for like 550HP (see motorsports TT thread). How much HP could your Sentra's stock clutch take?

Putting heavy duty gear in cars makes it have different characteristics. You'd rather it be quiet and wimpy? That's what Hondas are for. You'd rather it be quiet and stout? Spend $10-$20k more on a BMW or Audi.

 

I had a Geo Metro with a hydrolick (I know I spelt it wrong) clutch and it gave this noice but not as load. I am not worried. It is much more car than my old 95HP Geo Metro. The noice is not bad. I only hear it when I listen for it when my door is open. Suck it up people. Your car is OK.

 

im assuming this sound comes from only for MT transmissions right?

 

Yep

 

so every time a random cat runs by your car starts trippin?

 

some very solid points....

wish i had 10-20k more to burn lol...oh well...For similar price as the G37 U could buy a semi-stout motored car that's refined and pretty quiet but a little wimpier such as the Lexus IS350..Though it is 4dr...

 

I'm going to take a stab and say it's simply how the gears are cut. See if you have helical gears, they tend to be quieter but you lose more power in the drive train, if you have solid 90 degree gears such as those found on track cars in the rear end, they whine super loud as they tend to clack together instead of mesh and slide past each other. I had an 05 STi with helical cut gears all around. Nasty drivetrain loss, but super quiet gears.

G37's only suffer 15% drivetrain loss which is pretty good for FM/RWD, I'd attribute that to having a shallow angle cut on our gears, this is why it whines so bad when you're in first. The rear end has nice round helical cut gears, but I'm guessing that the input shaft has more agressively cut gears. I notice the whine in my car and having driven dog gears, it sounds like a nice tight set of teeth clacking together nicely. There's nothing wrong with it.

The sound you hear when you release the clutch at idle is simply the input shaft being connected to the engine and rotating. The reverse idler gear is probably near straight cut(as most are which is why reverse whines horribly in almost any car) so you're hearing that gear when you're sitting still in neutral.

 

Well the IS350 is automatic tranny only. You could get a G37 5AT or 7AT next year and it will not make this noise and not be appreciably slower than the G37 6mt and at least as fun as the IS350 -- likely much more fun.