Gtr Gearbox Whine

[Cateans05]

Hey Guys,

I bought a R32 GTR about 2 months ago, such a AWESOME car, had a bit of a taste of a few over last few years.

One thing i noticed on the way home was a whine in what i thought was the diff.

But recently ive recently its not the diff its the gearbox (R33 Gearbox), cos when its out of gear and rolling their is no whine!

Any one know what the dealios is? I DOUBT its got straight cut gears, although the guy i got it off had hardly any mechanical knowledge.

Thanks

Nick

[Ben C34]

The deal is the gearbox is worn.

[luke gtr]

Question would probably be better posted in gearbox/driveline thread.

Also, get a qualified mechanics opinion.

[niZmO_Man]

My gearbox is a bit whiney as well. I haven't changed the oil yet though.

[Cateans05]

AH yes! Okay thanks guys

[GTR.80S]

My gbox does this too, but all gears shifts smoothly without any crunching nor any hesitation.

How would u know or can tell physcially if its got straight cut gears?

[scotty nm35]

The deal is the gearbox is worn.

[niZmO_Man]

IF it had straight cut gears it will be very loud. Look up videos of cars with straight cut gears.

Best way to know is to pull the gears out.

[ibrox90]

clutch in and whine = thrust bearing

clutch out and whine = input shaft bearing

either of these is intermittent and only at cold... low oil

straight cuts.... you would know its very apparent and alot will have dogs not synchos which changes the gearbox feel.... in short if u had straight cuts and you had never had a car with them you would think your car was broken

Edited September 11, 2014 by ibrox90

[luke gtr]

Have also heard the case hardening can wear off the gear teeth and cause a slight whine.

Don't know how much truth is in it.

[Ben C34]

Have never heard of a gearbox that did it's own straight cut upgrade. The whine is wear.

[luke gtr]

Not straight cut, but "apparently" it still gives off a whine (with helical cut).

My 32 box was doing it.

People have asked if it was straight cut.

No, it's not.

[Ben C34]

Sorry Luke, I get what you mean. My comment was in relation to op thinking that maybe the gearbox was straight cut.

Typically if it is the seller would mention it as it's not a cheap exercise.

[luke gtr]

Ah, no worries.