Carburetor gaskets

RonS
RonS Senior Contributor
edited November -1 in HUDSON
I see hat the Hudson shop manual calls for 16 gaskets for the Twin H, WA1s. 8 on each carb. 4 below the heat deflector and 4 above the deflector. Mine was set up with 5 below and 1 above the deflector. Would I expect some consequence from this?

Comments

  • Matt1950
    Matt1950 Senior Contributor
    These gaskets act as a heat isolator from the intake and exhaust manifold radiated heat. If you do not experience any fuel boil or vapor lock I guess you can keep it the way you have it.
  • RonS
    RonS Senior Contributor
    Thanks for responding. If I add another three gaskets can I expect a performance change as the carb is now a 1/4 inch, or so, further from the manifold?
  • Matt1950
    Matt1950 Senior Contributor
    Typically the longer the distance from the throttle plate to the intake valve the more torque can be made. A 1/4 inch may not be felt by the driver but it may be measured if on a dyno. If you can make or by the gaskets I would put it back to the original gasket stack.
  • RonS
    RonS Senior Contributor
    I was advised that carb gaskets from a Ford 300ci six will work. I bought some( part Fel-Pro #60269, but they are thinner than I thought. Has anyone used these to mount the WA-1s? I look at them and it appears that two above and below the shield would be about right. What's opinion?
  • mars55
    mars55 Senior Contributor
    If you do not want to run gaskets, some people use a baklite spacer from a Chevy Six. They are about 1/2 inch thick. The part numbers are Delco 3692799 for '50 to '59 235 cid Chevy which has 3" spacing. The other spacer is Delco 3692797 which is similar but for the '34 to '53 Chevy and has 2 3/4" spacing.
    The supplier is Chevs of the 40's.

    Delco 3692799:

    http://www.chevsofthe40s.com/shop/search.lasso?search=+3692799+&searchtype=FT&Go=Go&year=All&dept=car

    Delco 3692797:

    http://www.chevsofthe40s.com/shop/search.lasso?search=+3692797&year=All&dept=Car&searchtype=FT&Go=Go
  • RonS
    RonS Senior Contributor
    Thanks Mars, I have no problem with the gaskets except they need to add up to a half inch top and bottom on each carb. I am curious, however, how well a hard bakelite will seal the carb from the manifold. Do these Chevy insulators require a gasket sealer(Permatex)?
  • TwinH
    TwinH Senior Contributor
    Mine has 1/4" gaskets above and below the heat shield. Paper gasket with a nice
    plastic grommet around the bolt holes to help prevent overtightening. No idea on
    a part # tho. I just measured mine and it seems a tick less than 3" bolt spacing.
    I'll check it better tomorrow. The reason this interests me is that with the
    Clifford head being thicker (2 3/4") mine has 1" extensions made from exh. tubing
    to level out the Twin-H air cleaners. It now occurs to me that I could jack the
    carbs up with a 1" spacer/insulator and do away with the exh. pipe spacer between
    the carbs and air cleaners. Hhmmm
  • mars55
    mars55 Senior Contributor
    RonS wrote:
    Thanks Mars, I have no problem with the gaskets except they need to add up to a half inch top and bottom on each carb. I am curious, however, how well a hard bakelite will seal the carb from the manifold. Do these Chevy insulators require a gasket sealer(Permatex)?

    Yes, you will need to use a gasket on the top and bottom of each spacer.
  • RonS
    RonS Senior Contributor
    I have these Ford gaskets previously stated. Three of them stacked comes to about 1/2 inch. Fine so far. But, now I see why there is only one gasket above the heat shield... The manifold studs may be too short to accomodate all three Ford gaskets. Next week I'll see for sure.
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