Gearbox Upgrade

[Bradyz]

Managed to lose 5th & reverse (selector fork?) at the last drag meet as well as my car sounding supercharged in 1st gear (bearing?).

Anyway, what gearbox's are you using/recomend when a standard GTR one wont do?

Its for an R32 GTS-4 with an RB30DET that will be daily driven, and no I'm not made of money so the Holinger is not an option.

[PurpleR32]

From your post i assume you need a GTR replacement, not GTS-4? anyhoo

OS Gear Set $5k+ (new, you MAY find a used one cheaper)

Trust 6 speed $8k+

HKS 6 Speed $10k+ (not that many around, more Trust Boxes around)

Pfitzner Gear Set

[KILL HSV]

are these gear sets really worthwhile, what makes them worth that much dosh? because if my gearbox dies someday, then i might look into an os gear set, but yeah are they worth it? are they indestructable, or close too?

[Bradyz]

Thanks for the input so far.

Yes I'm looking for a replacement for the GTR box.

At this stage I'm looking at going with the OS gearset but I have heard that Pfitzner do a helical cut box/gearset aswell as their dogbox.

Does anyone have info on these?

thanks

[Sydneykid]

Managed to lose 5th & reverse (selector fork?) at the last drag meet as well as my car sounding supercharged in 1st gear (bearing?).

Anyway, what gearbox's are you using/recomend when a standard GTR one wont do?

Its  for an R32 GTS-4 with an RB30DET that will be daily driven, and no I'm not made of money so the Holinger is not an option.

It's only a simple pin broken on the selector rod. It is NOT a sign of gearbox weakness, we get it when the clucth drags (doesn't fully dissengage) and you have to push it to get reverse, enventually it breaks the pin. Replace it and keep using the GTR box until you have enough power and traction to take the teeth off 3rd or 4th gear. Then you have reached the limit of the standard gearbox

The most cost effective upgrade I have found is the Pfitzner (PPG) close ratio dog engagement (replacement) internals for ~$A7K ($US5,500). The Japanese close ratio sets are still synchro and so only provide a marginal improvement. If I remember rightly Theo uses PPG in his 9 second GTR, as well as we use PPG's in the circuit race cars.

www.ppgearbox.com.au

Hope that is of some help:cheers:

[Bradyz]

Thanks Sydneykid, was hoping you'd see this

Im not far of the power needed to break 3rd gear (371awkw) and plan on doing alot more drag racing next season as well as using sticky tyres so prob only a matter of time. I have a spare gtr box now, so i'll repair this one and see how it goes.

Thanks again.

[Sydneykid]

Thanks Sydneykid, was hoping you'd see this

Im not far of the power needed to break 3rd gear (371awkw) and plan on doing alot more drag racing next season as well as using sticky tyres so prob only a matter of time. I have a spare gtr box now, so i'll repair this one and see how it goes.

Thanks again.

We are well over 400 rwkw and do many more gearchanges and spend longer in each gear in a 20 minute race than the drag car does in 100 passes. We don't have as much traction though, so you may have a little more headroom left. But I would start saving the pennies now:cheers: