I heard a while ago that some company makes exhaust flange gaskets (and manifold gaskets for GM engines) that will expand when subjected to exhaust heat and will form a perfect seal. Anyone else heard of these? The gaskets I use on the downpipe flange in my Duster (and where I bolted in straight pipes in place of my truck's catalytic converters) never want to seal and leak pretty heavily after no more than a couple weeks.

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'74 Duster w/ HEI ignition, beat to snot suspension, A904, 8.25" 3.55 SG rear, still being tuned up and gets 17 MPG

Know how they always build a better idiot? That's me

I know there's reusable copper and aluminum header collector seals........

Don't know about ones for normal manifolds.

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

I'm not worried about the manifold gaskets (that was just what was being talked about when they came up). All I need is a bunch of 2-bolt flange gaskets. And NO ring gaskets!

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'74 Duster w/ HEI ignition, beat to snot suspension, A904, 8.25" 3.55 SG rear, still being tuned up and gets 17 MPG

Know how they always build a better idiot? That's me

Would this work?

http://store.summitracing.com/partdetai ... toview=sku

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Boy that'd be about perfect if it was about 1/8" thick....

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'74 Duster w/ HEI ignition, beat to snot suspension, A904, 8.25" 3.55 SG rear, still being tuned up and gets 17 MPG

Know how they always build a better idiot? That's me

I still think you've got a warped flange.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I think so too, but I don't want to spend the money on having a new exhaust system done up until I make up my mind on if I'm going to keep the stock exhaust manifold, go with a set of Dutra Duals, or wait and see if this new header project pans out...

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'74 Duster w/ HEI ignition, beat to snot suspension, A904, 8.25" 3.55 SG rear, still being tuned up and gets 17 MPG

Know how they always build a better idiot? That's me

I wouldn't think it would be too much elbow grease involved in resurfacing it by hand. Is the manifold still on the engine?

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The Old Goat '83 D150 225-2

AKA Ice Titan