Uprated / recon Gearbox Skyline R32
Uprated / recon Gearbox Skyline R32
Author
Discussion

jamesuk28

Original Poster:

2,176 posts

275 months

Friday 6th April 2007
quotequote all
Hi I need to find either a replacement / uprated gearbox or recon box for my 1992 R32 GTR. Any ideas? The car has been heavily modified and produces between 450 - 500 BHP, so the box with have to be able to cope.

shadowninja

79,198 posts

304 months

Friday 6th April 2007
quotequote all
Mine had an OS Giken job. Not cheap, though.

knight

5,234 posts

301 months

Friday 6th April 2007
quotequote all
Try one of the tuners, Abbey Motorsport, RB Motorsport, RK Tuning they should have a box available

jamesuk28

Original Poster:

2,176 posts

275 months

Friday 6th April 2007
quotequote all
yes have seen the OS Giken boxes, How much did you pay?

If I am going to have to spend a few quid on a box, I might as well spend a bit more and get an improvment over the current one.

Stu R

21,420 posts

237 months

Sunday 8th April 2007
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Depends what you want, OSG do a 3 gear kit or a 5 Gear kit.
The three gear kit basically only replaces 1, 2 and 3. 4th gear is the input shaft which OSG also do an uprated version of.
The 5 gear kit obviously replaces them all.
With the uprated input shaft they're quoted as being 800bhp capable

PPG do dog engagement boxes, think they're around 4-5k, and not civilised.
HKS do the airshifter box which is a work of art, and commands work of art prices hehe think 10k plus.

OSG is definately the most common close ratio aftermarket box, and pleanty of people run them without trouble. I'll be running one when the new engine goes in.

Rod bell is the UK distributor for OSG www.osgiken.co.uk

hth
stu

shadowninja

79,198 posts

304 months

Sunday 8th April 2007
quotequote all
Abbey charged me £4000 to replace just the internals of my OS Giken box.

jamesuk28

Original Poster:

2,176 posts

275 months

Sunday 8th April 2007
quotequote all
The problem i have is a constant whinning from the box, the pitch goes up with engine revs. Drop the clutch and the sound goes.Drop the clutch with the car coasting and the noise is still there until the car stops moving

Clutch release bearing I hear you say, Wrong. The bearing was replaced when I uprated the clutch. The noise was there before and after this.

its doing my t1ts in and getting worse. I assume at some point whatever is causing it will give way and knacker the box, so the car is not used at present.

Any ideas?

Stu R

21,420 posts

237 months

Monday 9th April 2007
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Input shaft or it's bearing are often to blame, I'd guess at the bearing itself. Though if the teeth are mashed a bit they could also be to blame, but bearing is most likely.

Have you tried changing the gearbox oil lately? Can often work wonders mate.
A lot of skyline owners, myself included swear by "shockproof" gear oil. Certainly got rid of the ever so slight crunch i was getting going into 3rd, and the gearbox wasn't nearly as hot as it got before.
It won't eradicate the problem entirely, but it will often help to ease the effects and get a bit more life out of it.
Gearbox oil coolers are another worthwhile consideration, I'm sure you'll know as well as I do how warm it gets, why they don't all have gearbox oil coolers as standard is beyond me.

jamesuk28

Original Poster:

2,176 posts

275 months

Monday 9th April 2007
quotequote all
so is the bearing easy enough to get hold of and just replace? with an oil change as well? Any ideas where I can hold of one, I seem to be going around in circles.

Stu R

21,420 posts

237 months

Monday 9th April 2007
quotequote all
The bearing you should be able to get relatively easily.
Changing it isn't all that straight forward though, never attempted it on a GTR, not going to hehe
Any of the tuners / specialists should be able to get ahold of parts for you, I always recommend APT in norwich as I know and trust Gary, and he does bloody good work without the silly labour bills. www.ap-tuning.co.uk. He'll not have a problem getting parts.
Abbey will also be able to, as will RB motorsport I should think.

Personally I'd either consider getting the gearbox freshened up or buy a second box, get them swapped over, and rebuild and / or sell the other one to get some reimbursment.
Don't know how far from any of the tuners you are, but it might be worth swinging by to get their opinion before jumping in, as they'll hear it first hand and be able to give you a more definate answer to what the problem is, as there's obviously a few things moving around in a gearbox so it's hard to be conclusive without hearing it.

jamesuk28

Original Poster:

2,176 posts

275 months

Monday 9th April 2007
quotequote all
Thanks for your help guys I will give the recommended companies a bell in the week.