rebuilt 915 trans needs to "break in"?

[Trackrash]

Old thread I know. But...

I had a problem with hard shifting.

I had just replaced the shift rod bushing, the one under the shifter.
I was told "DO NOT LUBRICATE THE BUSHINGS".

That turned out to be a bunch of BULL DINK.

I lubed up that bushing with some molly grease and my car shifted like butter.

And that was 20 years ago and the bushing is still good.


Also after reading:

Originally Posted by Matt Monson View Post
I have an additional comment about dog teeth. In recent years the replacement dog teeth that have been available in the aftermarket, including those through OEM sources, have frequently been a tad too tight right out of the box. Back in the old days the factory put a slight backcut on the teeth allowing the synchro-ring to properly seat within the dog. What we have seen is that this backcut is not being done. It's something we do on all of our teeth at the point of manufacturing the gears. It's something many rebuilders know to do with a dremel at the point of assembling the gearbox with the new teeth.

Can you explain how this is done? Or is there another thread dealing with this issue?

Thanks,
Gordon