What's This Sound ?

[MaxGTST]

Ok, my R33 and my friend's R32 does a "supercharger" kind of sound .. I want to know what does this sound, where it coming froms.

Video hear,

you can hear it easily.

[(OO)SKYLINE(OO)]

Are the turbo(s) modified?

Sounds like turbo spool or "whine" if not a modified gearbox..?

[MaxGTST]

I do have a GT2540, but my friend still has the stock turbo and his motor does the same sound, just not as loud.

Stock gearbox too, only mod is a shortshifter and nismo clutch & flywheel on the drivetrain.

Oh and BTW, I want your rims ahah

Edited March 24, 2009 by MaxGTST

[(OO)SKYLINE(OO)]

I do have a GT2540, but my friend still has the stock turbo and his motor does the same sound, just not as loud.

Stock gearbox too, only mod is a shortshifter and nismo clutch & flywheel on the drivetrain.

Oh and BTW, I want your rims ahah

Hmmm... Interesting...

I was gona say worn out rear diff LOL! But no... Thats more of a "whoo" sound

Might have to ask afew tech heads on here.

LOL! Thats not my car in my signature. I have Volk TE 37's and no rear spoiler.

Yes Nismo LMGT4's are nice and I want them too! Hehe!!

[bozodos]

Mine made kind of a 'supercharger' sound when I blew a chunk of the turbo manifold gasket out, the other thing I'd've thought would be maybe a gearbox that's near stuffed!

[.:: GimpS-R34 ::.]

i'd say possible turbo sppol too.. do you both have pods? could be all it is.. your mates would be quieter cause lower boost.. see what others say

[MaxGTST]

yes, we do have aftermarket air intake.

[eeiko321]

some gearbox set ups can sound like a supercharger......

the Supra JZA80 6-speed Getrag can actually have a spooling whistle...

but the sound you hear in the video, is definately the turbo.......

my guess is the type of low quality video camera used..... ....

video cams can make things sound different than to the real thing

[MaxGTST]

It's my car, and it does the same exact sound in real, looks like it's really the turbo, not my first turbo car, but it's the first to do this sound.

[bozodos]

Yeah, it can be hard with those kind of sounds, a mate with an EL XR8 had a gearbox or diff whine sort of like that, my old VN had a REALLY loud supercharger type noise due to the clutch for the aircon being stuck on permanently, and like I said before, turbo gasket with a piece missing started it in the R32 (though when that happened, it was also extremely laggy and the noise seemed to go away on fullboost).

It's not straight cut gears or something modified in the gearbox like that is it?

[(OO)SKYLINE(OO)]

^^Yeah bozodos thats what I was thinking of as well... Square / Straight Cut Gears in the gearbox...

I remember hearing a VN Commie when I was living in Ballarat and the car looked stock but we heard this "Whine" and a friend said to me it sounded like Square / Straight Cut Gears.

[grigor]

Guys, do some trouble shooting..................

Can't be diff hey, the noise is there while the car is stationary.

Can't be gearbox hey, the noise is there while he's got the clutch in. Certainly sounds like box but he's got that clutch in.

Can't be turbo as it spools up matching engine rpm, just like a supercharger and NOT like a turbo.

So I'm thinking power steer pump

waterpump

Gates timing belt

crook tensioner/idler

Whatever, I wouldn't be thrashing it like that until I'd done some simple checks.

[(B1) MR_fanny]

are we talking about the wirring sound on idle? cause everything else sounds normal. if it is the wirring sound my bet is its an aftermarket timing belt.

My car makes the same sound though not as loud even though I used a genuine timing belt for the 100k service. I can really hear it when i blip the accel.

but i agree with grigors diagnosis

[MaxGTST]

I'm talking about the "supercharger" sound the car makes while accelerating. You can hear it clearly at 0:50.

It's not turbo spool, cause you can hear the turbo spooling and it's not this sound I'm talking about.

[bozodos]

HAHA yeah i know the one (00)Skyline(00), happens a lot on V6's! Mine was an 8 and different sound to that in particular, you could hear it at idle and the sound increased linearly with the revs. It was also a deeper whine, more like a Gilmer belt drive.

in that video, it sounds like it goes away when the clutch is in and then comes back when it goes out. But then it appears to do that in neutral as well :S

Thinking about it, a mates Passage sounds a tad like this too, it also has a HKS Turbo.

The only cars i've heard with straight cut gears incidentally (all WRX's) kind of make a TIE Fighter like sound, which that is not. I could be wrong though!

Edited March 25, 2009 by bozodos

[MaxGTST]

ok .. updates .. car does it when clutch is not in, in gears or neutral .. but when I press the clutch, it stops ! Gears, are kinda harder then my old R32 to put in. So.. aftermarket transmission ? Or simply the nismo clutch & flywheel thats does this sound.

It does the same exact sound as this car

Sounds like I have a dogbox on my car .. woot ! I now need to change my changing gear method.

Edited March 25, 2009 by MaxGTST

[MaxGTST]

Now I need to know if I have a complete dogbox or aftermarket gears...

[MaxGTST]

Updates .. looks like I can't change gear without using the clutch like a dogbox would. Tried this, full throttle, lno throttle, change gear, full throttle, didn't work at all...

All I know now it that the sound goes off when I press the clutch.Would a changed gear set with syncros do that sound ? Does a straight cut gear exist with syncros ?

Edited March 26, 2009 by MaxGTST

[joeyjoejoejuniorshabadoo]

ok .. updates .. car does it when clutch is not in, in gears or neutral .. but when I press the clutch, it stops ! Gears, are kinda harder then my old R32 to put in. So.. aftermarket transmission ? Or simply the nismo clutch & flywheel thats does this sound.

It does the same exact sound as this car

Sounds like I have a dogbox on my car .. woot ! I now need to change my changing gear method.

i think you'd somehow notice a dogbox.... probably around the time you paid $4k more than you were expecting and the previous owner said "that's because it has a dogbox"

[scotty014]

it sounds like straight cut gears and i like it .

but im no expert, im just going by what i hear.