R32 Os Giken Gearbox. How To Tell ?

[BK]

Just wondering how to tell the OS Giken gearset from the stock nissan gearset ?

I've got an R32 GTR with 550kw @ wheels and destroyed 3rd gear dragging. The car was supposed to have a OS gearset which I know are rated to 800 ps. I've got the box apart now and want to repair it but don't know if it is in fact an OS gearset. I know the ratios are different and if anyone knows the teeth count or something it would be very helpful to try and identify the type of gearset.

As for the car I fixed it with an OS Giken R3C triple plate clutch and a Trust 6 speed straight gear dog box with a new transfer case so I hope the car should be reliable for some more dragging now. Still want to get old box going as a rebuilt OS giken box would be good as a backup with my old transfer case as a bolt in, ready to go spare.

[Swiper the Fox]

Just wondering how to tell the OS Giken gearset from the stock nissan gearset ?

I've got an R32 GTR with 550kw @ wheels and destroyed 3rd gear dragging. The car was supposed to have a OS gearset which I know are rated to 800 ps. I've got the box apart now and want to repair it but don't know if it is in fact an OS gearset. I know the ratios are different and if anyone knows the teeth count or something it would be very helpful to try and identify the type of gearset.

As for the car I fixed it with an OS Giken R3C triple plate clutch and a Trust 6 speed straight gear dog box with a new transfer case so I hope the car should be reliable for some more dragging now. Still want to get old box going as a rebuilt OS giken box would be good as a backup with my old transfer case as a bolt in, ready to go spare.

the shaft should have OS giken clearly etched into it. Gear teeth are a lot more chunky compared to STD.

[infamous_t]

the shaft should have OS giken clearly etched into it. Gear teeth are a lot more chunky compared to STD.

Isn't the uprated input shaft only an option? and not necessarily part of every kit?

That said, I don't know why you'd go so far with strenghening, then not get the better input shaft.

[STATUS]

yeah as dirtgarage said counter shaft has big OS logo on it..... i turned our SR os box inside out within a few meetings.... ppg to the rescue.

Those trust (quaife built) boxes are nice but becareful of reverse and O/H it at the recomended intervals.

[Brockas]

Thats what you should see (minus the missing teeth).

Other way to tell if the gearbox is still in the car, it should do ~94km/h in 1st gear.

[Piggaz]

^^^^ @ what RPM??? 8500 RPM

[Brockas]

Neg, ~8k.