why does it do this?

semtex

Hmm...in that case, I see no reason it would have hit the rev-limiter in 2nd. Unless -- were you power-shifting? Like did you lift off the throttle in between 1st and 2nd? If you didn't lift in between, then maybe in that split second between gears it ran up to redline and triggered the rev-limiter. That's all I can think of. You already said you had TC off, so that shouldn't kicked in. (I'm just trying to be constructive. )

__________________
"There are no small accidents on this circuit." -- Ayrton Senna
316.8whp & 248 ft/lbs (Dyno Dynamics) | 319whp & 256 ft/lbs (DynoJet) (04/23/10)
Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

HITLIST

Thank you and one more thing has anyone heard your clutch box i think thats what it is but when you take it out of first and are parked or stopped can you hear your clutch spinning kind of loud just a ? those lil noises bother me

zZSportZz

I love it when people go all high and mighty on someone else when they beat their car. Who cares? Its their car...and their money. They didn't grab your keys and beat your car...or your dog

Beat away my friend...beat away.

Just take pics/video next time.

__________________
--Rick

Blown32

Wow dude I seen people put there foot in there mouth but you really buried yourself!Brilliant mindset you have!DAH!
Sure says alot about what is going on in you head?..SCARY!

chris410

Even with VDC off it's not completely "off" you probably either hit rev-limiter and it blipped back down as you tried to shift or you set off a VDC parameter which kicked in. That's my best guess...launching at 4500 is ok if you know how to properly slip the clutch. Get it wrong and you'll bog and or glaze the flywheel/clutch plates which will require a new clutch!

__________________
Chris
Current: 2014 WRX Stage I + SPT / 2013 Hayabusa 202HP
Former:09 370Z 7-AT PW/Ark Type 2 exhaust/Evo R lip/TSW Nurburgring carbon

Blown32

Well I own a Z and sure as hell wouldn't launch it as a drag car?I bought the car because it is a sports car.Not a drag car.I have a drag car and sure wouldn't think of abusing my Z in the manor you have from day one and my opinion is you are a jerk.Immature jerk at a that!
Not only are you the above but you have contradicted yourself by first saying you showed off with you new Z and second post said it wasn"t new and already was broken in and now you say it had 15 miles on it???
Which is it dude?Do you really know what you are talking about at all?

semtex

One other thing to be aware of with this car (if you aren't already) is that it has a very heavy flywheel. More mass = more inertia. You may have noticed that in between upshifts, the revs are a little slow to drop -- that's due to the inertia of the flywheel. The way it could factor into what happened is that if you were going WOT, when you disengaged the clutch with all that power going to the flywheel a moment before, the flywheel could have actually gone up in revs momentarily, even if you lifted off the throttle. And if you were really close to redline, it may have been just enough to hit redline and trip the limiter.

Speaking of the flywheel, it's the flywheel you're hearing, not the clutch, and yes I hear it too. It's normal for this car. In fact, flywheel noise is why Nissan put such a heavy flywheel in. They did the same thing in the 350Z. I don't fully understand the technical aspects of it, but a higher mass flywheel = less noise. I had a 350 before the 370 and put in a JWT lightweight flywheel. Man, my car sounded awful after doing that! The performance gain was there, sure. But sitting there at idle with the clutch disengaged? It sounded like something was wrong with my engine!

__________________
"There are no small accidents on this circuit." -- Ayrton Senna
316.8whp & 248 ft/lbs (Dyno Dynamics) | 319whp & 256 ft/lbs (DynoJet) (04/23/10)
Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

HITLIST

an immature jerk haha

gorillagoggle

Lol

zZSportZz

I have no stake in the matter here...but why do you care how he drives his car? Just curious as to what the mindset is here. Just wondering.

__________________
--Rick

Forrest

+1. Its his dam car, its not like he is doing it to yours.

Hell the guy might be worth millions and its a throw away car. If he wants to lite his car on fire and sit in the middle of it, its aaaa oooo kayyyy by me. Long as he payed for it and has no more payments haha. I woudlnt want to see nissan get cheated out of what they were owed.

__________________
my pictures http://www.the370z.com/members/forrest-albums-370z.html

semtex

His insurance would pay off Nissan. And for some strange reason, the idea of insurance companies getting screwed doesn't bother me so much.

__________________
"There are no small accidents on this circuit." -- Ayrton Senna
316.8whp & 248 ft/lbs (Dyno Dynamics) | 319whp & 256 ft/lbs (DynoJet) (04/23/10)
Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

HITLIST

and yes BLOWN lol my car is paid for was the day i bought it the second i signed for it hooooooooora

polarity

I'm with you there, for some reason that thought actually makes me really really REALLY happy.

As for the strange sensation I have no new guesses other than what the other guys have said. Have you considered trying a few launches at different (lower) rpms to see if you can recreate it without as much power (and without as much chance to hurt something)? Edit: Or maybe trying a 2500 rpm launch with the VDC still on to see if it is the same sensation as before.

To blown I say It's his car, he can drive it anyway he chooses. If he blows it up, maybe we will be lucky enough to hear how and it will give us even more information about the cars we all love. From what I've seen in this thread you're the one being immature. The man posted a question, he didn't ask to be treated like a jackass.

-William

HITLIST

thanks man yea from a digg at 3000 its solid it was just me i guess thanks again...