68 Differential Rebuild
Thread Starter
Racer
Joined: Jul 2008
Posts: 306
Likes: 8
From: Cypress (Houston) TX
68 Differential Rebuild
I’m working on my 1968 BB-390 differential. Three things popped out: 1-pinion bearing had excees play (~1/32); 2-pinion bearing shot (this and two dry u-joints probably accounts for the noise(s)) and 3-one of the trust washers has been turning marking the posi case seat!
Searched the internet and have not found shims for this situation. A vendor told me that if I was not planning to drive my Vette under severe conditions to clean up the marks on the case seat, install a new thrust washer and not worry about it. Other wise buy a new posi housing! First, I’m hoping the Vendor is correct, second is there such a thing as shims for improper fitting thrush washers? I'm one of those 500 miles (on this car) a year guys. Hugh
Searched the internet and have not found shims for this situation. A vendor told me that if I was not planning to drive my Vette under severe conditions to clean up the marks on the case seat, install a new thrust washer and not worry about it. Other wise buy a new posi housing! First, I’m hoping the Vendor is correct, second is there such a thing as shims for improper fitting thrush washers? I'm one of those 500 miles (on this car) a year guys. Hugh
Drifting
Joined: Jul 2002
Posts: 1,995
Likes: 110
From: Garland Texas
Nope,
no thrust washer shims available. If the thrust washer seat in the carrier is worn you need another carrier. A worn seat will have an adverse effect on the spider gear backlash. All the load will be transmitted to just one 10 tooth spider.
no thrust washer shims available. If the thrust washer seat in the carrier is worn you need another carrier. A worn seat will have an adverse effect on the spider gear backlash. All the load will be transmitted to just one 10 tooth spider.
