Last night on the ride home I developed a slight exhaust leak near the choke pocket where the manifolds bolt to the head. Upon closer inspection today after work I found about a 1/4 inch crack in the manifold gasket. The gasket that was used was the thick reusable one from the Cox bros. I know that the gasket failed due to the heat from the turbo and I figure that the gasket is not correct for a Turbo application. My question is what brand or type gasket can withstand this type of extream heat? Also note that I have no problem with underhood temps or overheating. Looks like I will be spending a day or two replacing the gasket. Let me know what you guys with the turbo motors think. Thanks, Brian

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It is very much worth your while to get the good gaskets for the manifolds-to-head and intake-to-exhaust junctions.

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

This one:

http://www.gprsmopars.com/shopping/pgm- ... ?id=5&=SID

Thanks for the links and info guys.

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Brian, make sure the manifols (both) are totally flat, and that one port is not lower then any others, or you will have problems, with any gasket. Ask me how I know .

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Charlie, What gasket are you running on your car? I will double check the manifold surfaces once I pull it apart. Its no big deal because I had planned to do a radiator upgrade and a few other minor things. The smallest exhaust leak can be so damn annoying at idle.

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On my NA and nitrous motors, I am using the Cox Bros gasket. On my turbo motor I used a Stock aftermarket "composition" gasket, not the metal one. I don't remenber what brand. The Cox/Mr Gasket/etc gaskets were not avaliable at that time (20+ years ago). I did not have to worry about the exhaust to intake seal, as I welded the exhaust flapper in the "no heat" position. It was welded internally, so there was no leakage around the flapper. I was running a "draw thru" system and had a water heated adapter on the cab to turbo inlet. You are running a "blow thru" and in Pa, so I do reccommend manifold heat.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225