R32 Gtr Gearbox Crunching On 4th

[gwin]

Hi all

So this happens sometimes..... flicking into 4th gear too quickly, would make the gearbox go *crunnnnnch*. The same sort of crunch that happens when the clutch isn't pressed. It happens less on 2nd gear, 1st and 3rd pretty much have no problem.

I'm very sure that I've put the clutch pedal all the way down to the floor, and this happens sometimes, noticeably when in "Race mode".

Is there something I'm/my mechanic is meant to adjust in the clutch/gearbox so that the plates disengage properly??

Anyone had/has the same problem?

Cheers

[ezy_09s]

Worn synchro's mate..mine does it on 3rd to 4th shift if you go a bit too quickly.

It shifts normally on the gear change when driving 'normal'..but if you get up in the rpm a bit or pull it through too quickly i get a small crunch.

Its time for me to rebuild it & put a decent gearset in anyway ,synchros just get lazy after many years of use.

[Chris32R]

After doing a bit of research after a bad crunch happened to me last night with a super quick shift from 3rd to 4th, it is infact a normal problem with the R32 and i beleive the R33 GTR gearbox. The only solution is to shift a fraction of a second slower before changing to fourth so that the synchro rings do there job of bringing the gear up to speed of the shaft.

Also use Redline Lightweigh Shockproof oil.

Thanks

Edited April 5, 2010 by HecticGTR

[Patrick88]

i had crunching in my gtr box occasionally when slapping second agressively and from 3rd to 4th quickly.

Put some Redline lightweight shockproof oil in and it has helped alot, no crunching in second or 4th now. This oil, or full synthetic gearbox oil realy helps free the syncros up.

[4NTM4N]

the same happens to my r33 gts-t in 4th..i just learnt to double clutch it, shifts in fine if i do that.

[Rbware]

Try the Redline that will help

[me_larr]

I cannot possibly agree more with trying redline shockproof lightweight (the light blue smurf blood oil) when it comes to relieving slightly worn synchros of crunches n whatnot.

I was shifting so slow for so long just to avoid the dreaded crunch in 2nd and 4th...then decided to take the plunge n get the oil after reading opinions from both sides (skeptics and believers).

Best gearbox fix for under $150 ever! I swear by this product and so will a bajillion others.

Some things are too good to be true, yea? Well, this isn't

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