Aluminum logs
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Aluminum logs

  1. #1
    punk ass kid warpt71's Avatar
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    Default Aluminum logs

    I'll ask here, run a gasket and silicone sealer or no gasket!?!? I know opinions are like assholes, but is there an "industry standard"?
    I'll paddle my flat before I drive anything else!

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  3. #2
    tintingsandiego krusn56's Avatar
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    Depends on block an log... You should be okay with BBC but if BBF , you need the thru bolt log then a gasket. The flange type log on a BBF warp/leak with or without gaskets.
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  4. #3
    punk ass kid warpt71's Avatar
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    BBC and Glenwood style logs
    I'll paddle my flat before I drive anything else!

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    Senior Member Mohavekid's Avatar
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    If the heads and logs are in good shape, no gaskets and no sealer.

    Just snug them up tight, run it to get things good and warm then re-torque.

    You should be good to go for years.

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    Senior Member ICECREAMAN's Avatar
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    I'm a high temp silicone guy. A bead around each port, let it sit for 5 minutes or so before you bolt them on and then don't start the boat for 24hrs for a full cure. I gave up on headers gaskets years ago. I've done them like this for 30 years.

  8. #6
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    Krusn is dead on about bbf logs, I run just gaskets on my Chevy logs

  9. #7
    Senior Member 1975sleekcraft's Avatar
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    I was told by Jerry Skagen, A boat builder from the '70s, that no aluminum log's ever had gaskets from the factory!! Just High-temp silicone(RTV)...When you use gaskets, it allows the aluminum ears to bend when torqueing the bolts(crushing the gaskets)...
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  10. #8
    Senior Member hihosilver's Avatar
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    especially olds gaskets will warp the manifolds

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