1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

"Tension Bolt Leak"?

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Old 04-11-04, 10:11 AM
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Question "Tension Bolt Leak"?

I was reading through old posts and found something LongDuck posted a while ago.

" if you have a lot of oil leaking from the transmission bell housing (front edge or starter mount), you may have the dreaded 'tension bolt leak' which is caused by the O-ring at the head of each of 18-20 tension bolts that sandwich the engine sections. These leak into the space occupied by the clutch and transmission front cover, resulting in a slipping clutch and oil leak from what appears to be the transmission."

Could someone explain this a little more. I fear I may have this problem......this or front cover seal leak on my trans.

Thanks
Old 04-11-04, 10:28 AM
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there isnt much more to explain. i suppose it would be like a leaky rear main seal type of deal. if you have the beehive type oil cooler, the rubber o-rings may have dried up and oil may be leaking down onto your engine and transmission making you think the leak is caused elsewhere.
Old 04-11-04, 01:57 PM
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That's funny because tension bolts seal the WATER JACKET. Yeah, I'd say rear eccentric seal if the oil is like the stuff in the pan, or tranny shaft seal/front cover gasket if the oil is thick and smelly. It could also be oil filter related like from a beehive, or just sloppy oil filter handling during an oil change.
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