I have a 2006 g36 6mt and every time i shift over 4k i hear a really loud engine noise... EX: I was coming out of the neighborhood and i was in 2nd...so i let it go to 5K and then when i put the clutch in i can feel some vibration and the moter gets really loud while the clutch is being pressed. I really cant explain this noise, but maybe somebody knows what I am talking about? O and by the way my car only has 600 miles.

 

First good to know that you're not afraid to go past 4K on your break-in!! Now you have to describe what kind of noise? when you get to higher RPM the engine does tend to scream louder that can put a smile in your face. a little vibration on the clutch seem to be normal too. We need more details.

Edit.
On my first 2k miles when i try to shift fast and shift on the higher RPM every time i shift it feels that my right foot is still on the gas while shifting. after a few thousand miles it went away.

 

maybe you ran over a possum

 

^ lol

world's full of smartasses!

 

Haha. John Big Bootie...wasn't that from a movie, somewhere in the 8th diminsions? Regarding the possum statement...that was just "Wong" Sorry, couldn't help it

 

^^^ thats wat it seems like...thanks!! So it is normal?

 

It is normal because you know that
G's transmission has kind of big vibration and clutch is also hard therefore..it is normal. trying to shift up when you reach 3.5k or less in 1,2nd gear

 

Its your engine getting used to higher RPMS and the all the metal shavings coming off your inner parts from your engine. Also I think the valves opening up letting more air in at around 4k-5k for more flow. Which causes a loud noise followed by you being jamed into the back of your seat as your car starts to fly forward. Sorta like VTEC but not. Dont be surprised you're gona be at lower HP in the long run since you're not taking care of your car. DRIVE IT LIKE A GRANDMA TILL 2K milage and get a oil change.

 

Let's not get into break-in debate again It's been discussed and been Dyno'ed that people who drove their car hard from the beginning yeilded more HP than someone who baby their car. All engine has been broken in already by the time it's put in the car. Break-in procedure is more on other parts like clutch (200-500 miles). I just babied my car for the first 400 miles because of the new clutch and after every 200 miles I raised my Rev Limit by a 1k.

 

That noise is the flywheel spinning down between shifts. After about 4k, it's quite loud. It's normal; don't worry about it.

 

The Adventures of Buckaroo Banzai

 

Maybe you ran over "Driver UR G" LMAO!!