I've finally gotten around to installing the Quaife I purchased 2+ years ago (as well as the new set of synchros and bronze shift fork pads). Several years ago I did a full "bearing & seal" refresh on this transmission. It has maybe 10,000 miles on it. Diff bearings are shot - the inner races have visible wear / heat issues and I also destroyed the bearings trying to remove them from the diff, even though I spent a few hundred in tools this past week. This must have been caused by too much preload on the bearings. I will definitely be measuring everything twice on this build.
Diff bearing races:
The original intermediate shaft from the car has some wear and will need welded/machined. I have a spare from the original transmission, but there is a nasty pit on one of the pinion gear teeth. My third option, is the NU-2206-ECJ bearing, but I really do not want to have my case machined. I am attaching some pics of both shafts I have. My instinct tells me to steer clear of the one with the pitted pinion gear tooth, and to have the other one machined. The car has roughly 300HP, and I have never taken it down the track, but I would like to do that once or twice a year. If this is the case can anyone recommend a decent machine shop around the Akron/Canton OH area?
Worn bearing surface:
Pitted tooth:
Thanks for any advice. I've been searching the forums and reading threads back to 2008 for the past three days.