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Leaky valve covers... #1295573 09/02/12 09:33 AM 09/02/12 09:33 AM
Joined: Jan 2003 Posts: 313 nj M MoJoe OP enthusiast
MoJoe OP enthusiast M Joined: Jan 2003 Posts: 313 nj	I just can't get my valve covers to stop leaking. I have a 383 with stock heads... it leaks pretty on the passenger back outboard side and runs down the bell housing. I 've tried different gaskets, sealants...just when I think I have it licked it comes back. Looking at the top of the head, the gasket surface is very narrow and a little rounded... almost a ridge. Should'nt this area be a little wider and flat? It looks like it could be a bad casting...any how it leaks pretty good and short of getting a new head I don't know what to do. Any ideas? Thanks

Re: Leaky valve covers... [Re: MoJoe] #1295574 09/02/12 09:52 AM 09/02/12 09:52 AM
Joined: Feb 2010 Posts: 1,377 Ohio Todd pro stock
Todd pro stock Joined: Feb 2010 Posts: 1,377 Ohio	Go get some superformace gaskets and the GRAY rtv sealant. Put a thin film on the head surface. Also look at the valve cover surface and see if there are casting marks. If so, fill in with the gray rtv. Make sure you get the gray kind. That blue, orange, black and whatever color they make is garbage.

Re: Leaky valve covers... [Re: Todd] #1295575 09/02/12 10:09 AM 09/02/12 10:09 AM
Joined: Jan 2003 Posts: 313 nj M MoJoe OP enthusiast
MoJoe OP enthusiast M Joined: Jan 2003 Posts: 313 nj	Super performance...any suggestions. Thanks

Re: Leaky valve covers... [Re: MoJoe] #1295576 09/02/12 10:16 AM 09/02/12 10:16 AM
Joined: Mar 2008 Posts: 724 PA USA F flatiron super stock
flatiron super stock F Joined: Mar 2008 Posts: 724 PA USA	I've had real good luck with the Mr Gasket Ultra Seals

Re: Leaky valve covers... [Re: flatiron] #1295577 09/02/12 03:57 PM 09/02/12 03:57 PM
Joined: Jul 2007 Posts: 1,682 Philadelphia R radar top fuel
radar top fuel R Joined: Jul 2007 Posts: 1,682 Philadelphia	A tall intake might need the lips of the v/c to be relieved. Damhik

Re: Leaky valve covers... [Re: radar] #1295578 09/02/12 05:47 PM 09/02/12 05:47 PM
Joined: Feb 2003 Posts: 4,793 Castlegar, BC, Canada That AMC Guy master
That AMC Guy master Joined: Feb 2003 Posts: 4,793 Castlegar, BC, Canada	Permatex "The Right Stuff". Bloody Mary, Full of Vodka, Blessed art thou among cocktails....

Re: Leaky valve covers... [Re: MoJoe] #1295579 09/02/12 07:51 PM 09/02/12 07:51 PM
Joined: Mar 2003 Posts: 4,848 Memphis HemiRick master
HemiRick master Joined: Mar 2003 Posts: 4,848 Memphis	Have you checked to make sure the covers aren't bent from being over tightened in the past? Take them off and remove the gasket, Is the surface that seals against the gasket flat and NOT dimpled down where the bolts are? If they are dimpled, you carefully beat them back to flat. Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451

Re: Leaky valve covers... [Re: That AMC Guy] #1295580 09/02/12 08:14 PM 09/02/12 08:14 PM
Joined: May 2005 Posts: 907 Mississauga, Canada KARLN super stock
KARLN super stock Joined: May 2005 Posts: 907 Mississauga, Canada	Quote: Permatex "The Right Stuff". I second that, it solved my valve gasket leaks. B5 Challenger T/A

Re: Leaky valve covers... [Re: KARLN] #1295581 09/03/12 01:12 AM 09/03/12 01:12 AM
Joined: Mar 2005 Posts: 862 Iowa State fan kilroy super stock
kilroy super stock Joined: Mar 2005 Posts: 862 Iowa State fan	Quote: Quote: Permatex "The Right Stuff". I second that, it solved my valve gasket leaks. As long as you never need to take a valve cover back off. IF you do guaranteed to be bent by the pry bar it takes to remove it. 1973 Charger, former SE, former auto I'm not trying to be difficult, it comes naturally....

Re: Leaky valve covers... [Re: kilroy] #1295582 09/03/12 01:22 AM 09/03/12 01:22 AM
A Anonymous Unregistered
Anonymous Unregistered A	I've used Permatex Ultra Blue. It stops leaks but like others have said, getting the valvecovers off can be difficult!

Re: Leaky valve covers... [Re: That AMC Guy] #1295583 09/04/12 08:19 AM 09/04/12 08:19 AM
Joined: Sep 2006 Posts: 277 Palmyra, NY 6 63stabamatic enthusiast
63stabamatic enthusiast 6 Joined: Sep 2006 Posts: 277 Palmyra, NY	Quote: Permatex "The Right Stuff". Right on! I had real good luck with the ROL hi-per blue VS5877HP gaskets. Make sure the covers are straight and clean, use brake clean on both covers and block. I put a small amount of Permatex on the cover, attach the gasket then bolt to the engine, without Permatex on the engine side. Do not overtighten the bolts, the covers bend easily, lightly snug them. I go around and lightly snug them yearly when cold.

Re: Leaky valve covers... [Re: 63stabamatic] #1295584 09/05/12 07:50 AM 09/05/12 07:50 AM
Joined: May 2009 Posts: 409 Lexington NC twinscrew698 mopar
twinscrew698 mopar Joined: May 2009 Posts: 409 Lexington NC	I heard Cometic valve cover gaskets was good! Although i never have used them, some here on Moparts have! A little more in money but if it stops the leaks it might be something to think about!

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