Topic: Undercut both directions?

[bwaller]

Is anyone using a gearbox that has been undercut both ways, as in upshift & downshift?

I've got drive side experience, but would like the impression of anyone with the above please.

[bjbuchanan]

Re-post to racing/performance?

[bwaller]

Not necessarily just race experience, anyone who is using one. I had an undercut (drive side only) CB gearbox waiting for when I had time to install it then in the meantime lent it to a forum member. This is the replacement, and as mentioned, is cut both sides.

[MRieck]

Is anyone using a gearbox that has been undercut both ways, as in upshift & downshift?

I've got drive side experience, but would like the impression of anyone with the above please.

Mine is both ways Brent (and has most of the dogs hardwelded). For roadracing it is a good thing. You are not banging downshifts when dragracing and on the street downshifts are much easier.

[bwaller]

Thanks Mike, I wasn't sure if yours was. I was prepared to stuff this in my race engine, but The 2 module gear (M/S 3rd/4th) has smaller diameter engagement dogs and being undercut both sides really reduces those dogs where it counts most. One positive is Fast by Gast indexes precisely so contact will be even for all three but I was nervous the use it. This gearbox is for Deb's 592, just hadn't got around to installing. 

The 6spd parts made it back & I'm installing the engine tonight. I'll bloody test it tomorrow so no surprises at the track next weekend.

[TimV840]

Woohoo! Only 6 days left buddy.

The 6spd parts made it back & I'm installing the engine tonight. I'll bloody test it tomorrow so no surprises at the track next weekend.

[bwaller]

Woohoo! Only 6 days left buddy.


Oh man don't I know it, it feels like it's been a whole year off.