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valve cover sealing.  Rate Topic 
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 Posted: 08-23-2011 01:13 pm
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Dan (Florida)
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Oil leaks have been my constant companion lately and I may have found a solution for one of them.   Getting valve covers to seal properly without leaking is somewhat of a crap shoot. Sometimes it works and sometimes not. Since the bottom edge of each cover is required to seal  under a pool of oil  the bottom edge is all important.  When you first put the cover on with all of the gaskets and sealers you will notice that the cover can rotate a bit around the round parts on the ends.  If the screws on the upper side are tightened first  the cover rotates away from the bottom surface.

My dea is to tighten all screws hand tight  and alternately snug down upper and lower screws. when all are snug, loosen the uppers and tighten the lowers  several times until the cover no longer rotates downward. This worked for me with paper gaskets and semi hardening permatex.  I have had semi success with different gaskets and sealers and figure that the secret is in the tightening sequence.

let me know if it works. I would be interested to know if retightening  a leaking cover  would stop a leak.

hth  Dan

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 Posted: 08-23-2011 01:41 pm
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Jensen Healey
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Hi Dan,

Good info! I'll try it next time I'm in there.

I think most cam covers have been overtightened sometime in the last 38 years and spread at the bottom. I've had good luck using the silicone or rubber gaskets installed dry. I did have to do the exhaust twice last time to get it tight.

Kurt

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 Posted: 03-04-2021 09:20 pm
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Ralph H
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Anybody have anything helpful to add to this 10 year old thread I am just about to put my cam covers back with silicon gasket and always like to hear from the collective genius of this forum. Thanks all

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 Posted: 03-04-2021 10:52 pm
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redracer
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Just use the red ones JHPS sells(has instructions) with new seloc washers and you should be fine.
Mine have been on 25 years with no problems

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 Posted: 03-10-2021 12:07 am
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chrisl
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Yep - Bret is right

I've used the red silicon gaskets on my J-H and GT for years, and the seloc washers. Both highly recommended.

I also bought a small torque wrench from a bicycle shop to get the right torque setting to tighten the bolts.

This, the red gaskets and the seloc washers has wiped out (arf arf) my oil leaks.

At least the ones from the valve covers...

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 Posted: 04-20-2021 09:35 pm
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Ralph H
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as directed I did just as Chrisl and redracer indictaed and the cam cover leaks are GONE. A new oil gauge takeoff and some work on the Transmission shift tower and I am almost spot free under the car after a drive. some small specs showing up on the floor near the front of the engine on the left side and fresh oil on the front lower area of the block still to sort out.

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