28 gauge steel to block exhaust crossover in manifold

Discussion in 'Engine Topic' started by AJ81Z28, Jan 16, 2021.

  1. AJ81Z28

    AJ81Z28 Member

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    Can I use 28 gauge stainless steel to block the exhaust crossovers in the manifold? I called Edelbrock and they told me to block it off with shim stock. I had to redo the gaskets anyways and the manifold is already off.

    Thanks for the help.
     
  2. 1980RS

    1980RS Veteran Member

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    I just use some thin sheet metal, seal it to the head then put the intake gaskets on top. .028 should work.
     
  3. 1320feet

    1320feet Veteran Member

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  4. sandlapper

    sandlapper Veteran Member

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    Have done it but with carbon steel that was a little thicker ... on CT cars where heads are pulled often for tech and plain cheap (sectioned) gaskets are ... cheap. Heck, done it w/ folded beer can in a pinch ... short-term only ... burns thru.
    28g about 0.015" ... when that thin, do ensure it's stainless.
     
  5. AJ81Z28

    AJ81Z28 Member

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    Last edited: Jan 17, 2021
  6. 1320feet

    1320feet Veteran Member

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    I don't know of any heads with a heat crossover that would require a gasket with that large of a port. 2.21 x 1.31 is much larger than a stock head.
     
  7. AJ81Z28

    AJ81Z28 Member

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    I was just about to get on and tell everyone the 1206-s3 are way too big but you beat me to it. LOL. I just grabbed them from O'Reilly's and they are huge.

    I ordered the FEL-MS90322 just now from O'Reilly's. Thank you for the suggestion I really appreciate it.
     
  8. AJ81Z28

    AJ81Z28 Member

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    And to answer your question from earlier I have World Sportsman 2 heads with a RPM Performer manifold. I just needed a stock replacement with the crossovers blocked out. Thanks again.
     
  9. 1980RS

    1980RS Veteran Member

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    You will still need to use some sort of thin sheet metal behind that gasket as that's is what I use and the gasket material will burn through with them.
     
  10. AJ81Z28

    AJ81Z28 Member

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