Hopefully all these pictures and the feedback will be useful to more than just me
I have a T56 that's been in the corner of my shop for the better part of 15 years. Bought her off eBay for a few hundred dollars. I'm just now getting around to putting into a project car, and I wanted to rebuild it first. I've never rebuilt a manual trans before, so I need some help identifying which parts are worn to the point of needing replacement.
I'll do my best to ID the gears as I go, but I may have some of them out of order. My table isn't quite big enough for this teardown.
First up are bearings. This is the mainshaft bearing from the mid plate as well as the races in the mid plate. I do see some scoring, but no pitting. Should I replace them, or run them?
I believe this is reverse. I would not expect much wear here, but I've never seen a new one, so I'm not completely sure what i'm looking at. From what I've read in the manual, I think this is fine. What say you? Run it or replace it?
Next up is 5th, I think. It's hard to tell the relative sizes in the pics. The engagement teeth seem to have pretty sharp points, and don't look too rounded off on the ends, but I don't know how a new one looks. I am a little concerned about the flats on the teeth. But again, I don't know what excessive wear looks like. (See edit below)
Now for what I believe is 6th. Same story here. The teeth look fairly pointed, but I'm not sure about the indentions in the sides of the teeth. (See edit below)
I believe this next one is first. The points on this one look great to me, but I'm still not sure about the sides.
I think this is second. This one looks good to me. Does anyone see an issue that I don't know to look for?
Next is third. This one looks good to me as well. Any issues?
Synchronizer sleeve. Any issues with these teeth? This is pretty typical of the others.
Lastly, this is what all the synchro clutches look like. There are raised portions on the outside, but the inside is uniform. They're not worn down to metal, but I assume this means the inside of the clutch is pretty well worn out, correct? I was planning to replace all of the synchro assemblies, anyway, but it's good to understand what I have.
I guess if I had to call it, I would say 5th and 6th should be replaced (see edit below) along with all the synchro assemblies. I'm not sure about the bearings and races, and I was sure hoping I wouldn't have to replace them. Any advice?
EDIT: Jason at Texas Drivetrain Performance took a look at the pictures of the 5th and 6th gear engagement teeth and said they looked fine him.