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Author Topic:   Oil leak?
Dirt Roller

Total posts: 14
posted August 11, 2001 10:09 PM
I'm leaking oil from were my intake manifold is laying on my block. This is for my IMCA Mod. I have I was told to put rtv on the block were my manifold thouches it. How my rtv should i use?

Dirt Forum Racer

Total posts: 81
posted August 12, 2001 11:07 AM
I just use a dab in the corners where the gaskets meet.Where the tabs meet.To kind of "squish" out and fill the gap.Dont over do it.I assume you are working on a small block chevy.Hope this helps.There are probably other ways.That is just my suggestion.

Dirt Roller

Total posts: 14
posted August 12, 2001 01:35 PM
yes it is a sbc with 10.5:1 compression. the leake just started last week after i just put on a 4 barrel.

Dirt Roller

Total posts: 22
posted August 12, 2001 05:55 PM
I dont even use those cheap rubber gaskets that usually come in the gasket kits. I just use RTV on the front and back on the block. I just put a nice bead just a bit thicker than what the gaskets are that are in the kits, and have never had a problem.

Dirt Roller

Total posts: 11
posted August 13, 2001 12:27 PM
Don't use the rubber end pieces that come from the gasket makers. Use a quality gasket between the heads and intake but use a silicone bead on the ends. The bead should be large enough to bulge slightly when the intake put in place. When using silicone bead for a gasket, let it skin over slightly (~5-10 minutes) before putting the pieces together.

Dirt Full Roller

Total posts: 37
posted August 13, 2001 06:51 PM UIN: 14464409
be sure to let it dry over night , if you start it right away it will build a little presure and push some of it out. just use about 8th of an inch tall and about 3/8 inch wide and put it on and then finish bolting everything up and then let it dry over night.good luck.

Dirt Roller

Total posts: 11
posted August 13, 2001 10:14 PM
put a bead of the rtv on the block. then put the rubber gaskets in. then put another bead on top of the rubber gaskets. we have found without the rubber gaskets the rtv doesn't seal very well.

hope this helps!!

Dirt Newbie

Total posts: 4
posted August 13, 2001 10:21 PM
I used to use red high-temp RTV until I found something called Right Stuff made by Permatex. This stuff is awsome. It comes in a small can with a push over nozzle.Run a bead of this across front and back of block, let it set about 10 minutes ,then set the intake STRAIGHT DOWN .I've been using this stuff for a couple of years . It works great for all kinds of gaskets too.The cans are sort of expensive (about 15 bucks) but 1 can will do 4 or5 intakes..

Dirt Full Roller

Total posts: 39
posted August 15, 2001 10:41 AM
Using RTV AND the rubber gaskets is the worst possible combination. The RTV will lubricate the gasket and nine times out of ten it will make it move out of position! Use RTV only. I'd go with a 1/4" high bead though.


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