Chevy Nova Forum banner

1 - 9 of 9 Posts

·
Registered
Joined
·
256 Posts
Discussion Starter #1
So i bought brand new valver covers (GM's black stock valve covers), ARP bolts and spreaders, and Summits rubber valve cover gaskets and torqued them down around 6-8 lbs. the gaskets refuse to seal, ive already taken off the valve covers to see if i might have warped them or something and they look fine. Ive even caked red silicon around the covers whiched stopped it for awhile but driving it just melted the silicon and its back to leaking again.

I bought these covers and gaskets because both are apparently have been designed specifically to seal very well... :doh:

Can you guys recommend a set of gaskets that you know seal the best on a 350 sbc?

Thnx

Chris
 

·
Registered
Joined
·
598 Posts
I had a similar situation and what I discovered was that the oil was climbiing the theads on the bottom bolts and running out between the spreaders and the valve cover. I fixed it by putting RTV around the bottom of the threads before installing the valve cover.
 

·
Registered
Joined
·
256 Posts
Discussion Starter #3
And that is exactly where the leaks are, right at the bottom bolts!

So just put some rtv on the threads of the bottom bolts and reinstall?

Chris
 

·
Premium Member
Joined
·
663 Posts
I like the Fel-Pro cork & rubber. Never used a torque wrench, just 2 fingers on a 1/4" drive ratchet just snug. Then drive it, let it set and snug each time you drive it until they won't snug any more with 2 fingers and you're good to go.
 

·
Registered
Joined
·
1,139 Posts
Did you check to make sure the covers aren't warped and not setting flat against the heads? Something isn't right there.

I never use bolts to attach valve covers, I always use 1/4" X 1 1/4" studs made from threaded rod stock, and 1/4" rod couplers for nuts. That eliminates any possibility of the gaskets being out of place.
 

·
Registered
Joined
·
978 Posts
I use the thick cork/rubber gaskets, gasgacinch the gasket on the valve cover, and grease on the other side.:yes:
The rubber gaskets I had leaked right away and I threw them out.:mad:
My neighbor told me to do this and I wouldn't believe it until I tried it. And he was right.
Gaskets seal and the valve covers don't stick when I need to pop them off and no need to reposition them since there glued to the valve cover.
 

·
Registered
Joined
·
381 Posts
I like the blue neoprene(?) metal sandwiched v/c gaskets. I used them exclusively on the superstocker without any leakage. Sorry, don't have a part number for them. I will use them again when the Chevy II is ready for the street.

Good luck:yes:
 

·
Registered
Joined
·
20,109 Posts
I like the blue neoprene(?) metal sandwiched v/c gaskets. I used them exclusively on the superstocker without any leakage. Sorry, don't have a part number for them. I will use them again when the Chevy II is ready for the street.

Good luck:yes:
I have blue neoprenes on my 72, hasn't leaked a drop nor burn any oil. :yes:
 

·
Registered
Joined
·
256 Posts
Discussion Starter #9
Thank you for all the great advice guys! I took the bolts off and just as iroc343 said, oil was creeping up the thread and leaking from there. I have applied RTV on the threads and will see if that stops it.

SeventynovaSS, the valve covers are brand new so i hope they are not warped.

If the RTV doesnt stop it ill try the cork/rubber gasket and studs you guys have been recommending.

Again, thanks for the awesome advice guys, i love this site!

Chris
 
1 - 9 of 9 Posts
Top