R33 GTR Gearbox internals

[Stixbnr32]

R33 GTR Gearbox internals

Hello,

My engine builder has come up with a suggestion for me with my gearbox problems.

To find a R33 GTR box and put its internals in the R32 case (cannot use R33 case and sensors etc are different).

He said it would be a much better box for my power level which is 375kw atw's.  Since I have already rebuilt my 32 box once before I'm looking for a better solution without spending 10k.

Anyone done this?

 

 

 

[Duncan]

Yes, pretty much everyone has to do this as the 32 bearings and synchros are not available any more. There are some small parts that are stronger in the series 3 (not series 1-2) r33 boxes which help with gear shifting.

BTW you can use the r33 box, it bolts straight in. You re-use your 32 gearbox speed sender, and you would be changing to a pull type clutch instead of push. Alternatively you can swap the 33 box to suit a push clutch by changing from front plate of the gearbox, the carrier, fork and pivot to the stuff from your 32 box.  I run a converted 33 box in my 32 race car.

But there is no difference with the gears or their strength, so depending on what you've broken (or are trying not to break) it may not make any difference.

[HarrisRacing]

While we are on the subject. What is the fastest someone has gone in the 1/4 on the stock 32 or 33 gears? I'm truly wondering what these boxes will take. I grit my teeth everytime I launch my car and it's still hanging in there (for now)

[Stixbnr32]

I ran 11.9 @ 116mph on my first ever pass....it hung in there haha

[usmair]

low 10s on stock boxes are commonly  achieved 

pretty sure ppl have run 9s too