Anyone use copper RTV on their Gaskets?
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Anyone use copper RTV on their Gaskets?
I need to replace my turbo manifold gaskets and was wondering if there was any benefit or downfall to smearing copper rtv on the stock MLS manifold gaskets. Ive seen people do it both ways but I figured the RTV was only for mating surfaces that didnt have gaskets
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I think copper sealent may have been used on the motor Cas007 originally bought. I don't think his mechanic/tech liked it. But it looks like whoever applied it got it everywhere, even on the pistons (unless it was a copper colored ceramic coating on the pistons, which I doubt, because my pistons are ceramic coated and do not look like his did).
I ask Frank to pull the oil pan to verify the bottom end components and we also agree to pull a head to verify the aftermarket valvetrain and reset valve clearances. This is what we found :
Attachment 216846 Attachment 216847 Attachment 216848
Some moron had sprayed copper coating for the gaskets all over everything! Frank recommends a complete teardown at this point and I agree.
Lots more coming tomorrow - I'm tired.
Attachment 216846 Attachment 216847 Attachment 216848
Some moron had sprayed copper coating for the gaskets all over everything! Frank recommends a complete teardown at this point and I agree.
Lots more coming tomorrow - I'm tired.
Last edited by ttg35fort; 02-26-2009 at 07:34 AM.
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I think copper sealent may have been used on the motor Cas007 originally bought. I don't think his mechanic/tech liked it. But it looks like whoever applied it got it everywhere, even on the pistons (unless it was a copper colored ceramic coating on the pistons, which I doubt, because my pistons are ceramic coated and do not look like his did).
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I sprayed the gasket with the copper spray on my built 4G63 it held the head gasket with 30psi on my 60-1.
My entire exahust system except for the manifold to head was all Copper RTV. So Manifold to turbo, turbo to downpipe etc etc..
You can use RTV on an old gasket if you are concerned but a new exhaust manifold gasket will not need it. You could use RTV for the head to manifold without a gasket but it's messy and wouldn't look very nice and would stain the aluminum of the head. So use a gasket there, RTV everywhere else.
One thing to know is most exhaust systems are designed to use a gasket so if you start eliminating them you will be taking a bit of space away and could cause the exhaust to move enough to bang on stuff, so just be aware of that. Generally RTV is a much better gasket on a turbo exhaust system than a gasket is, it will never blow out.
My entire exahust system except for the manifold to head was all Copper RTV. So Manifold to turbo, turbo to downpipe etc etc..
You can use RTV on an old gasket if you are concerned but a new exhaust manifold gasket will not need it. You could use RTV for the head to manifold without a gasket but it's messy and wouldn't look very nice and would stain the aluminum of the head. So use a gasket there, RTV everywhere else.
One thing to know is most exhaust systems are designed to use a gasket so if you start eliminating them you will be taking a bit of space away and could cause the exhaust to move enough to bang on stuff, so just be aware of that. Generally RTV is a much better gasket on a turbo exhaust system than a gasket is, it will never blow out.
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