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Rb20 Close Ration Racing Gearbox $1800

rbman
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rbman Rookie

rbman

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My mate has a VL Turbo and bought a close ratio gear box from an importer not knowing it was close ratio... As far as we have researched the only 2 close ratio gear sets are from NISMO ($2500+) and OS GEIKEN ($3500+), The gearbox is in good condition, no drive gears have noise, If you are in Brisbane and are serious about buying it we could probably arrange for you to see the geabox in action... We are going to remove it soon so if you are keen you'll have to jump in quick i guess.

Reason for sale - He has a large cam RB30ET with a highflow turbo, Paid a large sum to get his diff done previously and the car sit's too high in the revs on the high way, goes thru the gears too quickly it barely makes full boost before he has to change, It just does not suit His car.

The gearbox would be good for drifting, drag or race cars, or if your a real keen streeter... It would have stronger gears etc...

I'm pretty sure gibson motorsport used a similar setup gearbox on thier track cars.

anyway he is keen on $1800 for the gearbox, they are worth alot more then this and would not turn up often.

jaik Mentor

jaik

Posted
Posted

Have you opened the gearbox and had a look? Going by your advert one may be inclined to think it would only be nismo or os-g but it could be anything. Im looking for a gearbox, and if you can confirm exactly whats inside you may have a buyer

JK

rbman Rookie

rbman

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Have you opened the gearbox and had a look? Going by your advert one may be inclined to think it would only be nismo or os-g but it could be anything. Im looking for a gearbox, and if you can confirm exactly whats inside you may have a buyer

JK

I'll see what i can do...

rbman Rookie

rbman

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Ok pulled out and dismantled gearbox today... took a heap of photo's...

anyway measured ratio's by turning tailshaft and watching input shaft...

These are only rough guides...

1st 2.82:1

2nd 2.07:1

3rd 1.67:1

4th 1.32:1 (this is in the position of 5th gear)

5th 1:1 (this is 4th gear)

Exterior Pic 1...

hookshift1.jpg

Exterior Pic 2...

hookshift2.jpg

5th gear (or 4th :P)... Layshaft is clearly different from stock, notice the cone shaping is smooth before 5th...

hookshift3.jpg

Front side layshaft... Notice the gears have no machine marks down the middle of the tooth, clearly aftermartket...

and the layshaft has different machine marks on it...

hookshift4.jpg

Comparison Pic 1, The stocker is the rear one...

hookshift5.jpg

Again the front side... compare the gear sizes with the next pic...

hookshift6.jpg

Stock rb20 gearbox front side... notice the machine marks on the stock gears...

hookshift7.jpg

Rear side comparision... Stocker Is on the left... Notice the size of 5th...

hookshift8.jpg

Stock rear, notice the crappy surface on the cone before 5th on layshaft...

hookshift9.jpg

Again The rear of gearbox for sale...

hookshift10.jpg

Gearbox looks mint internally, no scoring, gouges on any gears...

There are no stamps on the gears so who could tell...

BTW Immo thats impossible, the layshaft is all one peice, you cannot chop and change gearbox's like that...

It's aftermarket anyway, they don't make aftermarket gears weaker then stock ever, so they are obvioulsy stronger... its closer ratio then stock... don't know what the gear ratio's are stock but 5th would be like 0.7:1 i guess...

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