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This is getting old
Posted by: Tre107 ()
Date: June 18, 2017 05:10PM

So a few weeks back I put black silicone and longer bolts on my valve cover to get it to stop leaking and today my parts came in and I was able to take if for a drive and test it out and not to my surprise it was leaking again. Its not any better and its not any worse. If someone could help me I would apriciate it thanks.

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Re: This is getting old
Posted by: MattNall ()
Date: June 18, 2017 05:39PM

You need to tell us what you've done so far to check fitment..





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: This is getting old
Posted by: Tre107 ()
Date: June 18, 2017 05:54PM

Fitment of what

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Re: This is getting old
Posted by: rowin4 ()
Date: June 18, 2017 06:07PM

longer bolts might be the problem, bolts bottomed out before cover was snugged up.

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Re: This is getting old
Posted by: dragvairclark ()
Date: June 18, 2017 06:11PM

All you should need are the the spring steel retainers. You don't even need to torque the bolts down tight.

Clark Hartzel, Fraser, MI
1965 Monza coupe

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Re: This is getting old
Posted by: Tre107 ()
Date: June 18, 2017 06:17PM

No they havent bottomed out I tightened them as much as I could useing a screw driver

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Re: This is getting old
Posted by: Lane66m ()
Date: June 18, 2017 06:20PM

7/16 head bolts should be there. Pull the screws out and measure them for length.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1966 Corsa Turbo Coupe, 180 hp 4 Spd
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2015 GMC Sierra SLT Crew Cab
1968 Camaro SS Coupe 350 CI 295+ HP PG
1947 Farmall A tractor 15 hp


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Re: This is getting old
Posted by: MattNall ()
Date: June 18, 2017 06:21PM

tre,


Did you put a straightedge / steel ruler on the head surfaces?

Did you do the same to valve covers before putting a gasket on?

Did you lay the bare cover on the bare head and check for rocking? or shine a light to see if there are any gaps?





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo




Edited 1 time(s). Last edit at 06/18/2017 10:41PM by MattNall.

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Re: This is getting old
Posted by: Lane66m ()
Date: June 18, 2017 06:24PM

Original bolts were 1/4-20 x 1/2.

Al Lane
Ellabell GA

1966 Monza Coupe, 110 hp, 4 Spd
1966 Corsa Turbo Coupe, 180 hp 4 Spd
1964 Greenbrier Deluxe, 6 dr, 80 hp car engine, PG
2015 Chevrolet Malibu 2LT
2015 GMC Sierra SLT Crew Cab
1968 Camaro SS Coupe 350 CI 295+ HP PG
1947 Farmall A tractor 15 hp


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Re: This is getting old
Posted by: Ratt643 ()
Date: June 18, 2017 07:01PM

What kind of gaskets are you using? I installed 1/4x20 studs in the heads and using the Clarks blue silicone gaskets, no leaks. Make sure you flatten the gasket surface on the valve covers, especially around the bolt holes.


1964 Monza Coupe

Maryville, TN
U.S. 129 The"Tail Of The Dragon"

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Re: This is getting old
Posted by: Frank DuVal ()
Date: June 18, 2017 07:04PM

Original bolts used with the spring steel retainers are 3/4" in length.

You can use 1" length in most cases, gets to new threads in bottom of hole.

Too much silicone is also too bad, causes gasket to slip out of position.

My personal favorite right now (changes like the seasons!) is Permatex's High Tack.

Frank DuVal

Fredericksburg, VA

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Re: This is getting old
Posted by: Tre107 ()
Date: June 18, 2017 10:35PM

Ok I think I got an idea on how to fix this thank you for the responses.

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Re: This is getting old
Posted by: CoCoCo ()
Date: June 19, 2017 09:14AM

Let us know how it works out.
Oil leaks are a pain for sure, and the bane of many's existence. Thankfully valve covers were never something I had to deal with leaks on. Really just the oil pans, and even that wasn't very bad over the years.
He says, as he's knocking on wood!

Paul

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Re: This is getting old
Posted by: Timothy Shortle ()
Date: June 19, 2017 09:42AM

Did he scrape ALL of the old gasket off when he put new ones on? Being that "this is getting old" I would suggest taking it to a professional auto repair shop for this repair job. It can't cost that much.

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Re: This is getting old
Posted by: MattNall ()
Date: June 19, 2017 12:06PM

Tre....

Something we haven't mentioned is the fact that many Vair heads have "Warped" over the last 50 years..





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: This is getting old
Posted by: Timothy Shortle ()
Date: June 19, 2017 12:11PM

I also wonder if the oil leak was diagnosed properly? Push rod tube seals, oil cooler and/or seals, or crankcase cover gaskets can leak oil and look like valve cover gaskets leaking.

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Re: This is getting old
Posted by: Tre107 ()
Date: June 19, 2017 01:02PM

the head is warped and I have replaced the pushrod tube o'rings and checked the other seals so I'm sure its the valve cover gasket.

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Re: This is getting old
Posted by: MattNall ()
Date: June 19, 2017 01:09PM

Then if the head is warped.... you need to make the gasket surface flat...

you build up the low area with some epoxy PUTTY.. file it flat afterwards..





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo




Edited 1 time(s). Last edit at 06/19/2017 01:12PM by MattNall.

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Re: This is getting old
Posted by: Jim Stukenborg ()
Date: June 19, 2017 01:28PM

I have never had much success with silicone. I have tried it wet. Tried letting it skin over. Tried letting it semi harden. No real success with either method. What is everyone else doing? Jim

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Re: This is getting old
Posted by: MattNall ()
Date: June 19, 2017 01:47PM

All you need is two flat surfaces and anything works...





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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