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02-10-2023, 03:40 PM
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#1 |
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Registered User
Join Date: Nov 2015
Location: denver colorado
Posts: 67
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replacing leaky old valve cover gaskets.
Along the lines of my earlier post, do you guys use any permatex or other stuff when you replace your old cork valve cover gaskets?
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02-10-2023, 08:02 PM
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#2 |
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Moderator
 Join Date: Dec 2012
Location: ON, Canada
Posts: 2,156
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Re: replacing leaky old valve cover gaskets.
I clean the cover and straighten it. Clean the head. Then I glue the gasket to the cover and let it set up. Then, cover on, and don't overtighten. And I don't use cork, I use the better composite gaskets now.
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02-10-2023, 08:37 PM
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#3 |
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Registered User
Join Date: May 2011
Location: Anderson SC
Posts: 3,876
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Re: replacing leaky old valve cover gaskets.
I like Permatex Aviation non hardening sealer, it's much easier to clean off than silicone
__________________
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02-10-2023, 10:47 PM
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#4 |
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Registered User
Join Date: Feb 2013
Location: central California
Posts: 2,733
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Re: replacing leaky old valve cover gaskets.
I'm routinely vexed with leaky perimiter bolt valvecovers. Last time I bought the extra thick cork ones and put Permatex black on both sides. Everything was clean I really did it right but they still leak a little. I believe chevy switched to the centebolt ones for good reason.
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02-10-2023, 10:58 PM
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#5 |
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Senior Member
 
Join Date: Dec 2009
Location: TN.
Posts: 7,901
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Re: replacing leaky old valve cover gaskets.
I will add to the Recommendations above.
https://www.ebay.com/itm/40068229235...8751550f8d6fe2 Clamps like these Help.
__________________
________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
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02-11-2023, 03:25 AM
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#6 |
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Senior Member
Join Date: Mar 2015
Location: washington
Posts: 2,201
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Re: replacing leaky old valve cover gaskets.
I agree with Getter-Done, the bolt hole spreaders are the way to go.
Sadly I have used the GM ones that are hardened and you couldn't bend them with a small hammer. I have also used the imports that I could bend, at the bolt hole, with my fingers. I am unsure if you can even purchase the GM them any more but the least expensive spreaders are not the ones you want. At least you know how to tell the difference. Cheers. |
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02-11-2023, 08:07 AM
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#7 |
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Moderator
 
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: replacing leaky old valve cover gaskets.
I used 1217H Threebond and have never looked back.
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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02-11-2023, 11:59 AM
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#8 |
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Registered User
Join Date: Nov 2015
Location: denver colorado
Posts: 67
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Re: replacing leaky old valve cover gaskets.
Thanks fellows.
I love this site! |
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02-11-2023, 12:08 PM
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#9 |
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Registered User
Join Date: Nov 2012
Location: queen creek az
Posts: 133
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Re: replacing leaky old valve cover gaskets.
I bought Summit Racing valve cover gaskets that are black rubber with some kind of metal inside, you can reuse them and don’t use any sealant.
My truck has a big block, but I’m sure they make these for small blocks and maybe 6 cylinder. https://www.summitracing.com/parts/s...xoChI4QAvD_BwE |
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