Locked up Getrag 282

[woody90gtz]

Broke my getrag drag racing last year and finally got a chance to get it on the table this weekend. I thought I broke a shift fork or something and it was locked in 4th gear. But upon removal I can see the input shaft was locked solid - ZERO movement. If it was just stuck in 4th it would move by hand when out of the car.

I split the case and with the extra wiggle room it will shift through all gears (with some serious effort for some) and allows a touch of rotation in the input shaft "out of gear". I have gotten it to spin about 1/4 a few times, but it is not consistent. The next time I can get it to turn like that I'm going to take notes on everything. The forks seem to be fine, there must be something else going on. I'm gonna try to press the input & output shafts out of the case at work to get a better look. It's gotta be something with 4th gear, but 3rd is in the way and I can't see anything until I get them out of the case.

[woody90gtz]

I think I have finally solved the mystery: a snap ring. I found a broken snap ring at the bottom of the input shaft right behind 4th gear. It looks to me like the snap ring broke, and 4th gear slid down the shaft letting the blocker ring lose its index with the syncro. Which would explain why it would not shift to 4th. Then as I shifted the arm on the trans with the engine off to check the shift cables it must have dropped in 4th and then never come back out. I can't see now how it was stuck in another gear (to bind it up) since it freed up last night as I pulled some of the guts out of it. I have to take the shaft to work and press 4th gear back where it should be and that should expose the groove for the snap ring. So the plan is to throw a new snap ring in, reassemble and see how it acts. Right now by holding 4th higher on the shaft so the blocker ring lines up the syncros engage 3rd & 4th nice and smooth. Gears & syncros all look great. Hopefully my spares can stay spares and I don't even need to crack them open!

[woody90gtz]

No updates in a long time...trans went back together great and was functional but had a noise I didnt like. Sent it to Midwest Trans in MN and the diagnosed it as a cracked 5th gear. Replaced 5th and all is well. Decent place to do business with.