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Thread: 34 Exhaust Manifold Question

  1. #1
    Senior Member buick840's Avatar
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    34 Exhaust Manifold Question

    I'm currently replacing the inlet/exhaust maifold gaskets on my 34 8/40.

    I believe they didn't have gaskets when new as the machined surfaces were nice and smooth and fitted tightly so as not to need gaskets but this car has had gaskets for some years now.

    Anyway my question is ........I have new gaskets and will be using them but is there a need for a sealant on each surface (manifold and head) when using proper heat resistant gaskets or is it best to fit them dry?

    Thanks for reading
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    Brian Flynn,
    Victoria, Australia
    ----------------
    BCA Member 42088
    Buick Car Club of Australia (Vic)

    1934 8/40 Sedan
    1955 Special Riviera 2 Door Hardtop

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    Re: 34 Exhaust Manifold Question

    Personal preference in my opinion. I spread a very thin film of high temp RTV on mine just as added insurance.

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    Senior Member buick840's Avatar
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    Re: 34 Exhaust Manifold Question

    Thanks,
    I agree is seems like good insurance....unless someone else can indicate a reason not to?

    Another question I have is............. after I've disassembled the exhaust manifold and hot box to reseal and paint them is.............in the gasket set I have there is the triangle shaped gasket to fit the hot box back onto the exhaust manifold but there are no other gaskets the right shape to fit between the top of the hotbox/exhaust maniflold and the inlet manifold.

    I can make one from gasket material I have but is there usually one of those in the set or not?

    And lastly......... is there a supplier for the thick 1/2 inch gasket/spacer between the carby and the intake manifoild?

    Brian Flynn,
    Victoria, Australia
    ----------------
    BCA Member 42088
    Buick Car Club of Australia (Vic)

    1934 8/40 Sedan
    1955 Special Riviera 2 Door Hardtop

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    Senior Member 50jetback's Avatar
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    Re: 34 Exhaust Manifold Question

    Quote Originally Posted by buick840 View Post
    And lastly......... is there a supplier for the thick 1/2 inch gasket/spacer between the carby and the intake manifoild?
    Brian,

    Bobs Automobilia supplies them in either 7/16" or 7/8".
    .
    Don't forget if your setup doesn't have one at the moment to put one in you will need longer studs and it also alters the cold idle control


    Stuart Syme
    BCA#37072
    Buick Owners Club of Western Australia

    1929 54CCX Convertible Coupe
    1930 Model 47 sedan
    1934 Series 40 Roadster
    1936 Century 66C X Convertible Coupe
    1950 Model 56S Super Jetback Sedanet
    1942 UL-74 Special Sport Solo Harley Davidson
    1984 J 10 Jeep tray back utility

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