Differential Cover Spring Bolt Holes
Thread Starter
Pro
Joined: Jul 2006
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From: Buxton Maine
Differential Cover Spring Bolt Holes
One of the spring bolt holes in my diff cover goes through. It was allowing oil to slowly leak out. Do I need a new cover? Was this a hack back in the day to drain the case? Or is it supposed to be like this? Thanks, Rick 
Race Director
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From: North of Toronto - Ontario
Either seal it (thread sealer such as permatex hi-temp) while changing the oil (good a chance as any) or do the full job and switch to Muskegon HD cover and never worry about it again
M
Thread Starter
Pro
Joined: Jul 2006
Posts: 505
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From: Buxton Maine
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From: New Or-leens Loo-z-anna
I've seen several where they have rusted in the corners and flaked off in layers, also a long bolt will puncture the casing.
Either seal it (thread sealer such as permatex hi-temp) while changing the oil (good a chance as any) or do the full job and switch to Muskegon HD cover and never worry about it again
M
Either seal it (thread sealer such as permatex hi-temp) while changing the oil (good a chance as any) or do the full job and switch to Muskegon HD cover and never worry about it again
M
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
FWIW, have a NOS Muskegon cover I won't be using (have opted to do the batwing/iron hoghead conversion).
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Instructor
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From: Lantana Florida
Broke my original cover by not applying weight of the car.
Race Director
Joined: Apr 2011
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From: North of Toronto - Ontario
The bolts holding the spring to the rear can be torqued without the suspension loaded (As per the AIM)
The bolts that use the rubber bushings to twist on (ie control arms, trailing arms etc) all should be torqued in the loaded position since they twist up and down from that position. The spring doesn't do this.
That said, I torqued the front mount and re-checked the torque once it was lowered.
M