Uprated/stronger 02m gearsets?

Tom. · May 12th, 2012, 02:36

Alright guys,

To cut a long story short, I've managed to strip 3rd gear in my 02m box, and in turn damage 6th.

I'm trying to find a stronger gearset that will drop straight in to the box with no issues, as I dont want to be replacing gears on a regular basis.

Just wondering if anyone has come accross or used any in the past?

I'd consider dog/sequential sets at reasonable prices too.

So far I've found this (scroll down for Ibiza TDI)

http://badger-5.com/bin/gearbox/RacingGearboxVW02M.pdf

My only concern is the ratios.

Anybody used dog sets before, and can comment on the upkeep of them?

Thanks,

Tom.

Rub87 · May 13th, 2012, 04:08

they're some guys in Czech I think which will surely be able to help you out, forgot the name altough

ryanp · May 13th, 2012, 09:56

I'd check the Diff was shimmed perfectly, or at least do it on the next box, Cryo treat the gears and use VW oil only. There are plenty of 700+hp 4x4 cars running drag slicks without any issues on the stock box.

Maybe you want me to limit torque on that monster GTB eh?

Alcaid · May 14th, 2012, 04:12

Quote:

Originally Posted by Rub87

they're some guys in Czech I think which will surely be able to help you out, forgot the name altough

http://www.sqsracing.com/

Tom. · May 14th, 2012, 04:47

Quote:

Originally Posted by ryanp

I'd check the Diff was shimmed perfectly, or at least do it on the next box, Cryo treat the gears and use VW oil only. There are plenty of 700+hp 4x4 cars running drag slicks without any issues on the stock box.

Maybe you want me to limit torque on that monster GTB eh?

Limit torque? Don't talk silly

rather chew through gearboxes. Diff was installed correctly. It has taken 100,000 miles of abuse from me so probably doesn't help the case. Managed to pick up a box with 36k on it for £350 so going to swap the diff over and chuck it back in ready for gti international.

devonutopia · May 14th, 2012, 11:59

Good shout.

yet to have any issue with mine. I have done the trick of uprating the shifter arms. This is the first time I've heard of anyone stripping a cog though. Those internals are really solid!

Rub87 · May 14th, 2012, 12:13

Last week I had one off a cupraD with the 1st and 2nd synchro weared out. this was caused by a bend shifter fork and the fact that the dmf was worn causing the clutch surface to move axially. this caused the driver to be inable to completely decouple the clutch and so accelerate the synchro wear. the bearings where also quite worn out according to the transmission guy

devonutopia · May 14th, 2012, 14:43

Quote:

Originally Posted by Rub87

Last week I had one off a cupraD with the 1st and 2nd synchro weared out. this was caused by a bend shifter fork and the fact that the dmf was worn causing the clutch surface to move axially. this caused the driver to be inable to completely decouple the clutch and so accelerate the synchro wear. the bearings where also quite worn out according to the transmission guy

Well, I am glad (in theory) neither of those two things should happen to my box.

3L3M3NT · May 14th, 2012, 17:11

This should outline your options pretty good. http://forums.vwvortex.com/showthrea...upgrade-thread

Rub87 · May 16th, 2012, 00:57

what about the housing bolts? The one I took apart now came out of a 2006 cupraD, GUC coding, and it had aluminium like bolts with a torx. my gearbox was also a GUC from a cupraD but it had metal bolts...?

chapelhill · May 16th, 2012, 14:05

I think if I remember my limited gearbox knowledge correctly, highest load on gearbox is during wheelhop, not directly linked to torque of engine, but indirectly as with more engine torque you can induce wheel spin more often.

I would suspect a gear with an original material or manufacturing defect.

High use failure of manual gearbox would normally be due to either bearings wearing and or shaft/box deflection which changes gear contact geometry and results in accelerated wear/pitting on gear surface which can precipitate cracks. Once one tooth has gone the rest will follow.

Since we have few failures reported you should not need anything beyond a good condition gearbox, with strengthened selector forks.

Anything else which can reduce wheelhop such as better suspension, lsd etc I believe you have already done.

If you wanted extra strength, the upgrading bearings, strengthening casing etc would also directly help. No idea of availability of bearings or practicality of strengthening case.

Scott_DeWitt · May 16th, 2012, 18:50

Sqsracing offers alternative gears for the 02M it's the only company I know of. Dog engagement requires abrupt shifting for life of the dog gears, any delays in the shift can cause wear on the dog teeth which require gear replacement.

You can cryo treat gears but even that won't yield an indestructible gearbox. I know an R32 that can strip cryo treated 02M gears at will and he's had to tune it down and not drive as crazy for gearbox life.

vwmikel · May 16th, 2012, 18:59

Supposedly the AWD gearboxes use wider/stronger gears and some just convert them back to FWD.

Scott_DeWitt · May 16th, 2012, 19:07

Quote:

Originally Posted by vwmikel

Supposedly the AWD gearboxes use wider/stronger gears and some just convert them back to FWD.

That is not true.

vwmikel · May 16th, 2012, 20:14

Quote:

Originally Posted by Scott_DeWitt

That is not true.

I believe it was StingrayRT that said this. Perhaps I misunderstood.