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Re: Leak proof valve cover gaskets
[Re: fastmark]
#2464433
03/10/18 06:40 PM
03/10/18 06:40 PM
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Joined: Jan 2003
Posts: 4,821
Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,821
Moved to N.E. Tennessee
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Have you tried Mr Gasket ultraseals?
Check with Superformance to see if they make a gasket suitable for stock covers.
Last edited by GomangoCuda; 03/10/18 07:02 PM.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Leak proof valve cover gaskets
[Re: topside]
#2464510
03/10/18 10:51 PM
03/10/18 10:51 PM
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Joined: Jan 2003
Posts: 5,446
Indiana
YO7_A66
master
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master
Joined: Jan 2003
Posts: 5,446
Indiana
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I love my stock 340 valve covers but I have been fighting leaks for many years. I have used several different types of gaskets and sealants. I have also done the normal crack repair and straightening but those attempts did not stop all of the leaks. So I decided to add an aluminum spacer under the valve covers and two sets of the blue streak cork gaskets torqued to the stock 55in/lbs. So far the flat surface of the spacers seems to have helped the leaks even with cork gaskets.
1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
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Re: Leak proof valve cover gaskets
[Re: Dave Hall]
#2464630
03/11/18 09:16 AM
03/11/18 09:16 AM
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Joined: Jan 2003
Posts: 6,621
Abilene, Texas
fastmark
OP
master
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OP
master
Joined: Jan 2003
Posts: 6,621
Abilene, Texas
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Get some cast valve covers. If you must have the originals on iron heads, the best way is to smooth the rail on the head and glue the gasket to the cover using (sparingly) The Right Stuff. The cast rail on original heads is terrible. Narrow and filled with porosity. You have a 3/8 flange on the valve cover that tightens down to a 1/8"-3/16" rail. Over tightening can be a bad issue. The factory had those little boomerang and other pieces over the top of the valve cover rail for a reason. This is a restored, matching numbers, 440 4 speed Challenger. Can’t put cast covers on it.
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Re: Leak proof valve cover gaskets
[Re: fastmark]
#2464697
03/11/18 12:05 PM
03/11/18 12:05 PM
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Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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The best I ever used for stock covers was the Felpro performance gaskets. Black rubberized. They seemed to work best on the stock cast head surface, but in time, they will still leak.
[image][/image]
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Re: Leak proof valve cover gaskets
[Re: fastmark]
#2464763
03/11/18 01:52 PM
03/11/18 01:52 PM
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Joined: Jan 2003
Posts: 31,264
Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,264
Oregon
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Get some cast valve covers. If you must have the originals on iron heads, the best way is to smooth the rail on the head and glue the gasket to the cover using (sparingly) The Right Stuff. The cast rail on original heads is terrible. Narrow and filled with porosity. You have a 3/8 flange on the valve cover that tightens down to a 1/8"-3/16" rail. Over tightening can be a bad issue. The factory had those little boomerang and other pieces over the top of the valve cover rail for a reason. This is a restored, matching numbers, 440 4 speed Challenger. Can’t put cast covers on it. Well now you have oil leaks just like the original cars did. That makes it a correct matching number car. It probably also leaks from the transmission and the differential just like the factory cars did.
Last edited by AndyF; 03/11/18 01:53 PM.
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Re: Leak proof valve cover gaskets
[Re: fastmark]
#2464766
03/11/18 02:03 PM
03/11/18 02:03 PM
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Joined: Jan 2003
Posts: 17,929
Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,929
Akron, Ohio
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I switched to cast valve covers years ago, use a crush proof gasket like Superformance. Never any leaks at all.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Leak proof valve cover gaskets
[Re: ProSport]
#2464805
03/11/18 03:18 PM
03/11/18 03:18 PM
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Joined: Apr 2012
Posts: 18,880
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RSNOMO
Moparts Torchbearer
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Moparts Torchbearer
Joined: Apr 2012
Posts: 18,880
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I switched to cast valve covers years ago, use a crush proof gasket like Superformance. Never any leaks at all. Me, too... Using the old 'high-temp' VC gaskets... Bone dry for a LONG time... Unless I had a need for OEM correctness, I'd never go back to stamped...
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Re: Leak proof valve cover gaskets
[Re: A39Coronet]
#2464893
03/11/18 07:10 PM
03/11/18 07:10 PM
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Joined: Aug 2003
Posts: 1,578
KOS
pro stock
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pro stock
Joined: Aug 2003
Posts: 1,578
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Blue Moroso Perm-align gaskets. Rubber with steel inner skeleton. Best I've ever used, no leaks, reuseable. I'll never run anything else. this or SCE but I'm not sure if they make em for factory style VCs I have them on my B1s and they are leak proof.
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Re: Leak proof valve cover gaskets
[Re: fastmark]
#2464989
03/11/18 10:14 PM
03/11/18 10:14 PM
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Joined: Sep 2015
Posts: 1,096
Australia
ozymaxwedge
super stock
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super stock
Joined: Sep 2015
Posts: 1,096
Australia
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One thing that caught me was I was using an old set of M/T covers on Indy heads, the underside of the cover where a bolt passes though was a different angle !! You think it tight but it isn't.
1963 Plymouth Max Wedge
1971 Barracuda
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