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Detroit Exhaust manifold gasket questions.... Any MLS? Best?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Green461, Jul 8, 2025.

  1. Jul 8, 2025 #1
    Green461

    Green461 Light Load Member

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    Mar 22, 2019
    Southern WI
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    series 60
    I have a head thats pitted and I think the standard thin one piece steel ones are not cutting it. Too thin.

    MLS multi layer steel... do they make them?

    Do the graphite ones blow out? Ive used them on headers on cars they always burned up. The MLS ones are awesome...

    Would doubling up the metal ones work? That is essentially what a MLS one is, the embossed metal ones stacked opposing to make it thicker.
     
    Green461, Jul 8, 2025
    Green461, Jul 8, 2025
    #1
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  3. Jul 8, 2025 #2
    062

    062 Road Train Member

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    062, Jul 8, 2025
    062, Jul 8, 2025
    #2
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  4. Jul 8, 2025 #3
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Big Road Skateboard, Jul 8, 2025
    Big Road Skateboard, Jul 8, 2025
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  5. Jul 9, 2025 #4
    jamespmack

    jamespmack Road Train Member

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    They have graphite and MLS.

    MLS 23533983

    I've never had a problem with either. Neither might seal a pitted head. Maybe spray some copper coat on them. If its bad. The head needs resurfaced. Might get by with high temp copper rtv. No guarantees how long that bandaid will last. Sometimes it works, sometimes it does not.
     
    jamespmack, Jul 9, 2025
    jamespmack, Jul 9, 2025
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  7. Jul 10, 2025 #5
    Rideandrepair

    Rideandrepair Road Train Member

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    5494868B-28E2-42E8-A2E2-0E7D67F6002A.png They call it a cement. Supposed to expand when hot. Sold in 2oz. bottles for $3.75 direct from manufacturer. Never used it myself. Supposed to be good stuff.
     
    Rideandrepair, Jul 10, 2025
    Rideandrepair, Jul 10, 2025
    #5
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