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post #1 of (permalink) Old 08-08-2001, 02:03 PM
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gaskets or RTV

I finally am getting around to dropping these valve covers on, but all the documentation I have has confused me. The service manual says just to use a new gasket, which I have. The box that the coveres came in says to use "...adhesive..." on both the valve and head side of the gasket. The Chilton's says EITHER use RTV or a new gasket. The Haynes manual says only use it on the valve side of the gasket.

It makes sense to use RTV on the valve cover side so the gasket doesn't fall out, but should I use it on the head side too? I got the black sensor safe RTV gasket maker.

thx.


-Ut
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post #2 of (permalink) Old 08-08-2001, 05:06 PM
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Re: gaskets or RTV

i'll be doing that later on today too! I'm putting a thin coat on the head side too just to be safe, it can't hurt.

1977 fullsize pickup,350ci. edelbrock carb, headers, oversize radiator, 4sp SM465/NP-205, 12bolt, 6" lift, 35" tires, cd deck, 2 amps, Bazzookas, 2 gas tanks
post #3 of (permalink) Old 08-08-2001, 05:16 PM
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Re: gaskets or RTV

i think your right steve. The Felpro gaskets I have don't sit quite evenly in the valve cover flange, so I think a bead of RTV will even things out a bit when its flush with the head. I might push the install back a day (I still need to go to town before 6:00pm!) so I can get some needed tools: Beer, smokes, 6" 3/8" socket extension - just the basics! It looks like I have to unbolt half the crap in the engine compartment just to get to the valve covers!


-Ut
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post #4 of (permalink) Old 08-08-2001, 05:48 PM
 
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Re: gaskets or RTV

I am not positive on this, but I think you should use one or the other but, not both. If I am incorrect someone please correct me.

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post #5 of (permalink) Old 08-08-2001, 06:30 PM
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Re: gaskets or RTV

I just used both on the intake manifold gasket too and it is absolutely leak free.
i wouldn't go as far as to put a full bead along the edge though, that may be a bit much, with a gasket too. I am just smearing a paper thin coat along the surfaces myself

1977 fullsize pickup,350ci. edelbrock carb, headers, oversize radiator, 4sp SM465/NP-205, 12bolt, 6" lift, 35" tires, cd deck, 2 amps, Bazzookas, 2 gas tanks
post #6 of (permalink) Old 08-08-2001, 06:34 PM
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Re: gaskets or RTV

97ZR2Guy, I've heard the same thing, about using paper gaskets because the RTV prevents the gasket from swelling (how it does this under torque I don't know), thereby stopping leaks...On the other hand, I've used RTV on the paper gasket for my glow controller - and it hasn't leaked.

'83 Blue 'Burban K10, 4" with 35's, 6.5l oilburner, 700R4/208
post #7 of (permalink) Old 08-08-2001, 08:37 PM
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Re: gaskets or RTV

I am not crazy about using RTV and a gasket on some things. Sometimes it will cause the gasket to slide when you start tightening it down. I had this problem on an oil pan gasket one time. Get the Felpro rubber valve cover gaskets and you dont need RTV. Just go back in about a month and retighten them. I have no problems with leaks with those.


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post #8 of (permalink) Old 08-08-2001, 11:19 PM
 
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Re: gaskets or RTV

To me I agree With Cuttingedge get the rubber gaskets with the meatel in them so u cant ove tighten them. But, if you want to stick with the ones u got I would just put the RTV on the cover side.

If it aint broke, keep fixing it till it is.
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post #9 of (permalink) Old 08-09-2001, 03:06 AM
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Re: gaskets or RTV

my gaskets are cork but they do have metal in them. I think I'm going to see how flush they sit on the heads before making a final decsision. If unsure I'll probably leave the RTV off the head side, and see if I develope any leaks, and apply RTV as nessesary. thx for the input guys.


-Ut
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