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Late m90, S38B38 head gasket part numbers for big sixes over 93.4mm bore?

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    Late m90, S38B38 head gasket part numbers for big sixes over 93.4mm bore?

    Can't find the thicker (2.20mm vs 1.72mm) late m90 (circle style holes ala 81, 82 m90s, not the slit style) head gaskets online and wondering if somebody can help me out. I can find m90 gaskets but no pics so I'm uncertain. 3453cc m90, not the 3430cc m30 as I have 94mm pistons. Goetze, maybe Elring if possible.

    Gotta get my big bore m30b35 together and this is the last part I need to buy. ;D
    Last edited by Streichholzschächtelchen; 07-23-2019, 01:59 AM.
    Jah bless! :pimp:

    #2
    Found one that's 2.20mm thick, for m90, 11 12 9 065 668
    1.72/1.74mm, for m90, 11 12 1 730 951
    1.74mm 3.5L 3.6L s38 11 12 1 316 705
    1.82/1.84mm 3.8L M5 head gasket, 11 12 1 401 351

    The first two show as the right part numbers for e12 535i, e12s stopped being made in 81 so it has to be m90. Now if they are the late m90 style, that would be cool, supposedly these gaskets work on 3.5L variants with build dates up to 5/82 which is when m90s ceased production so it sounds right, no pictures anywhere. 94.5mm holes for m90, and 3.5L 3.6L S38 headgaskets, the s38b38 head gasket has 95.5mm holes. Pretty sure these will all work, and are all goetze as they are genuine BMW. Even lowering the compression ratio an impercievable amount will help me down the road when I decide to boost, and I had my head lightly skimmed so I'll be looking for the 668 gasket.

    I don't want to run Victor Reinz, or one of the off brand, untested gaskets, nor MLS because they weep a little, so for regular style gaskets this is it.
    Last edited by Streichholzschächtelchen; 07-23-2019, 01:51 AM.
    Jah bless! :pimp:

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      #3
      Hi Mate
      I remember you purchased the VW pistons for your build. How did that go? Did you end up using standard m30 rods and 86mm crank?
      Thanks

      Comment


        #4
        I'm assembling soon, got hit by a car and by the time I was feeling better it started raining. Should be getting the project underway within the month. Had the stock rods balanced because they can hold more power than I can make at my compression ratio, crank I had balanced.
        Last edited by Streichholzschächtelchen; 05-29-2019, 12:56 PM.
        Jah bless! :pimp:

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