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eschlanser
Joined: 08 Apr 2010
Posts: 60
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 Posted: Fri Jun 01, 2012 4:59 am Post subject: valve cover screw oil leak |
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Four or five valve cover screws are leaking oil on my C85. It has the red silicone gaskets. The screws are really tight now and still leak a fair amount. It's on a certified plane. Is there some thing legal that can be used to halt the leak? I have Tight Seal on hand.
Eric in SW Michigan
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BARRY CHECK 6
Joined: 15 Mar 2011
Posts: 738
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| Posted: Fri Jun 01, 2012 5:15 am Post subject: valve cover screw oil leak |
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Eric:
You answered your own question and I quote: " The screws are really tight now and still leak a fair amount." REALLY TIGHT is what is causing it.
Start by:
1 - Removing the cover and the gasket
2 - Cleaning the cylinder face and cover face well, use SCOTCHBRITE and MEK
3 - Wipe down the silicone gasket with a QUICK wipe of MEK.
4 - By pulling on the gasket as you go all the way around - LOOK - for nicks and tares, especially around the screw holes. If found replace that gasket.
5 - Install the gasket on the cleaned surfaces of the cylinder & cover.
6 - MY TRICK - Totally legal - Use RED Loctite on the threads of the screws. Yes, RED Loctite.
7 - Tighten the screws in a STAR PATTERN - Tighten the cover to a uniform height - Just enough to show compression of the gasket.
8 - Unfortunately torque values do not work because the gasket squishes. But, do not go "really tight". It's a case of experience. You now have the experience of what NOT TO DO! I'm sure you will figure out the rest.
Barry
On Fri, Jun 1, 2012 at 8:59 AM, eschlanser <eschlanser(at)yahoo.com (eschlanser(at)yahoo.com)> wrote:
[quote]--> Continental-List message posted by: "eschlanser" <eschlanser(at)yahoo.com (eschlanser(at)yahoo.com)>
Four or five valve cover screws are leaking oil on my C85. It has the red silicone gaskets. The screws are really tight now and still leak a fair amount. It's on a certified plane. Is there some thing legal that can be used to halt the leak? I have Tight Seal on hand.
Eric in SW Michigan
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