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Thread: Tri-z head gasket

  1. #1
    Join Date
    Jun 2006
    Location
    Illinois
    --
    491

    Tri-z head gasket

    Ok, I just installed my freshly bored cylinder and machined head w/ new gaskets. I torqued the head to specs in a crisscross pattern and filled the radiators after reconnecting everything. And to my disbelief, I have coolant leaking from the head gasket. Actually, it appears to be coming from the front stud.. Any ideas? Is it really possible that I have a bad new gasket? I disassembled it and everything looks ok. The gasket does not specify which way it goes, up or down. Maybe there is a way to tell? I'm baffled and aggravated. Help!

  2. #2
    Join Date
    Aug 2004
    Location
    Ab Canada
    --
    4,368
    Put a copper washer under the one Head nut, and use just a light dab of RTV/silicon and tighten it down when its wet....no worries.
    1985 Tri-Z-

    Quote Originally Posted by mywifeknowseverything
    Just hit the Freakin Gas and Hold on!!!!!

  3. #3
    Join Date
    Jan 2006
    Location
    conesus lake NY
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    11,894
    Blog Entries
    1
    copper washer with acorn nuts work the best

  4. #4
    Join Date
    Oct 2003
    Location
    Watertown, New York 13601
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    3,382
    I had that problem before too. I used that white thread tape and it stopped leaking. All i did was wrap it around the stud and it was fine.
    1985 YAMAHA TRI-Z 250 sold

    2006 YFZ 450

  5. #5
    Join Date
    Jun 2006
    Location
    Illinois
    --
    491
    If coolant is getting past the gasket and into the stud area, then that doesn't solve the real problem. Aren't you just sealing off where the coolant should'nt be anyway? Or am I missing something? It doesn't seem like the head gasket is doing it's job. Could it be that the head studs are so old that when you torque it down, I'm not getting a proper torque on the head nuts because the studs are stretching a bit?

  6. #6
    Join Date
    Jan 2006
    Location
    conesus lake NY
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    11,894
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    try a little bit of silverseal in the fluid..other than that pull it all apart make shure it clean around the studs..I take it your useing a stock metal gaskit?
    I have used the fiber yz gaskets witch seem to seal better for that type of problem..how bad is it really just a little drip? then I would put some silverseal in it.Ive done it in the past and never had a problem after, Even after fluid changes.

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