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Thread: Are thick head gaskets legal for compression correction?

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  1. #1
    Join Date
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    Default Are thick head gaskets legal for compression correction?

    I have a few old race cars that could be over the compression limits for IT rules. Can I stack the metal head gaskets to get back under the legal limit?
    Thanks, MM
    Mike Ogren , FWDracingguide.com, 352.4288.983 ,http://www.ogren-engineering.com/

  2. #2
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    Default

    Read the rulez, newb...

    "Cylinder head gasket(s) may be replaced with any gasket(s) having the same compressed thickness as stock."

  3. #3
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    So, no provision to save all of these old race engines?
    Plus, nobody knows what the OE size was/ is.

    Maybe one of you insiders can write a letter to correct this oversight.
    Mike Ogren , FWDracingguide.com, 352.4288.983 ,http://www.ogren-engineering.com/

  4. #4
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    Maybe one of you insiders can write a letter to correct this oversight.
    If you want the rule changed and you're knowledgeable, why don't you write the letter??
    Dave Gran
    Real Roads, Real Car Guys – Real World Road Tests
    Go Ahead - Take the Wheel's Free Guide to Racing

  5. #5
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    Trussville, Alabama, USA
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    Default

    Note, some manufacturers, namely BMW, offer two thicknesses head gaskets. I think they are 2mm (stock) and 3mm, just for the purpose of lowering the compression ratio if the head is milled too far. I would think the rule was written to prevent thin gaskets to raise compression.
    Chuck Baader
    White EP BMW M-Techniq
    I may grow older, but I refuse to grow up!

  6. #6
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    What would make that a bad thing instill of milling the head?
    Dave Gran
    Real Roads, Real Car Guys – Real World Road Tests
    Go Ahead - Take the Wheel's Free Guide to Racing

  7. #7
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    Quote Originally Posted by Flyinglizard View Post
    Maybe one of you insiders can write a letter to correct this oversight.
    "Oversight"?? For four decades...?

    See, I told you guys: allow removal of washer bottles and suddenly everyone wants their own pet peeve 40-year-old reg changed.

    I told you, I told you, I told you...

  8. #8
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    Quote Originally Posted by Greg Amy View Post
    "Oversight"?? For four decades...?

    See, I told you guys: allow removal of washer bottles and suddenly everyone wants their own pet peeve 40-year-old reg changed.

    I told you, I told you, I told you...

    Actually, before they did away with the washer bottle rule they did away with the VIN and sub model rule (the one that now lets you make an Si out of a DX). So if you REALLY want to talk up told you so's...:026:
    hoop
    Greensboro, NC
    STL Newbie

  9. #9
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    Quote Originally Posted by iambhooper View Post
    Actually, before they did away with the washer bottle rule they did away with the VIN and sub model rule...
    Holy crap...YOU'RE RIGHT! I *TOTALLY* missed that!

    So it WASN'T the washer bottle...that...was just a diversion! Dammit those guys are smart...

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