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small block valve cover gasket question #251581
03/12/09 11:12 AM
03/12/09 11:12 AM

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What kind of material was used on the small block valve cover gaskets? I am working on a 70 chally convert and the fel pro engine rebuild gasket kit that I got has what seems to be rubber valve cover gaskets. I would like to use whatever the factory used since it is going to be a factory appearing car. My initial thought was that they were cork originally? Am I wrong in my thought? Also, the tabs that stuck through were probably engine color as I would have to assume that they were on the engine prior to it being painted.

Thanks,

Brian

Re: small block valve cover gasket question [Re: ] #251582
03/12/09 11:14 AM
03/12/09 11:14 AM
Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
Mr Wizzard
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Mr Wizzard

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Spokane Washington
Black rubber was factory and anything left exposed once installed got painted along with the rest of the engine

Re: small block valve cover gasket question [Re: ScottSmith_Harms] #251583
03/12/09 11:32 AM
03/12/09 11:32 AM
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Shopping @ HoBo Fright
340SIX Offline
Doc Flappergas's Evil Twin
340SIX  Offline
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Shopping @ HoBo Fright
I had a problem with the felpro rubber valve cover gaskets sealing.
I changed them out for the cork and rubber ones and it fixed it.


[img]https://i234.photobucket.com/albums/ee87/fast340six/sig%20pics/2840886-340SIX-1.jpg[/img]
VP of the MPM in New Orleans
73 Dart Sport 340/ 70 challenger vert. That may still get built, If I live long enough
Re: small block valve cover gasket question [Re: 340SIX] #251584
03/12/09 12:52 PM
03/12/09 12:52 PM
Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
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ScottSmith_Harms  Offline
Mr Wizzard

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Spokane Washington
Yes, the rubber ones tend to leak pretty easily. I use some black RTV or black non hardening gasket sealer like Permatex on both sides and have had good luck keeping them sealed, goop on both sides can be a pain when you remove them because of all the extra clean up but they do seal nice that way. Once rubber gets a leak the oil will find the pathway and leak forever, tightening the bolts only makes it worse. It has to be VERY clean on all areas and have a nice even compression from bolt torque without over tightening to get a good seal.

Re: small block valve cover gasket question [Re: ScottSmith_Harms] #251585
03/13/09 02:19 AM
03/13/09 02:19 AM
Joined: Sep 2004
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IL, Aurora
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ademon Offline
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I thought i read that the new silicone with the metal core is working well with some guys using the stock V/C's, i use the rubber ones but i have some M/T's covers on mine and you can crank them down very tight without worrying about warping the V/C's.

5089713-DSC00206.JPG (38 downloads)
Last edited by ademon; 03/13/09 02:22 AM.
Re: small block valve cover gasket question [Re: ademon] #251586
03/13/09 03:00 AM
03/13/09 03:00 AM
Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
Mr Wizzard
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Mr Wizzard

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Posts: 42,714
Spokane Washington
Quote:

i use the rubber ones but i have some M/T's covers on mine and you can crank them down very tight without worrying about warping the V/C's.





Try that with stock stamped steel valve covers and you'll get the results I described.

Re: small block valve cover gasket question [Re: ScottSmith_Harms] #251587
03/13/09 08:44 AM
03/13/09 08:44 AM
Joined: Mar 2003
Posts: 15,478
the boonies
aarcuda Offline
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the boonies
Quote:

Quote:

i use the rubber ones but i have some M/T's covers on mine and you can crank them down very tight without worrying about warping the V/C's.





Try that with stock stamped steel valve covers and you'll get the results I described.




very true.

I run the MTs also wiit hthe rubber gasket. i run the rubber cause i have a solid cam and the rubber is better for removing VCs for lash adjustment. the corks gets hard and breaks after a short while.

Re: small block valve cover gasket question [Re: ScottSmith_Harms] #251588
03/13/09 10:33 AM
03/13/09 10:33 AM
Joined: Jan 2003
Posts: 9,436
Blair County,PA
62maxwgn Offline
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Blair County,PA
Quote:

Quote:

i use the rubber ones but i have some M/T's covers on mine and you can crank them down very tight without worrying about warping the V/C's.





Try that with stock stamped steel valve covers and you'll get the results I described.




Scott,have you ever tried this?A friend that has done nothing but bulid Mopar engines for the last 40yrs put me on to it.Use it for everything,and I mean everything.It not as slippy as most silicone's and it doesn't leak.It is aroung $6.00 a tube depending on your dealer,PT.# 82300234

5090023-MVC-032S.JPG (48 downloads)
Re: small block valve cover gasket question [Re: 62maxwgn] #251589
03/13/09 10:38 AM
03/13/09 10:38 AM
Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
Mr Wizzard
ScottSmith_Harms  Offline
Mr Wizzard

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Posts: 42,714
Spokane Washington
Quote:

Scott,have you ever tried this?





Nope! But I sure will try it

Re: small block valve cover gasket question [Re: ScottSmith_Harms] #251590
03/13/09 01:21 PM
03/13/09 01:21 PM
Joined: Sep 2004
Posts: 6,906
IL, Aurora
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ademon Offline
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ademon  Offline
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IL, Aurora
i think thats the stuff Mopar recommends when using synthetic fluid in rear ends, the run of the mill silicon was not sealing the rear covers very good when filled with syn







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