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Thread: Is this head gasket any good?

  1. #1
    Join Date
    Feb 2011
    Location
    nova scotia
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    125

    Is this head gasket any good?

    i took my head gasket out of the package yesterday and it is very warped. i was wondering if i can still use it or do i need another new one? i have never seen a head gasket come like thisClick image for larger version. 

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  2. #2
    Join Date
    Jul 2009
    Location
    South Florida
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    6,808
    copper and no kinks it should be just fine
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  3. #3
    Join Date
    Feb 2011
    Location
    nova scotia
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    125
    ok i was just concerned because i have never seen a copper head gasket warped like this. thanks for the info !

  4. #4
    Join Date
    May 2010
    Location
    Wichita, Kansas
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    1,361
    I've stepped on 1 and kinked it. It works great and doesn't leak lol
    I just wanna go fast. If your not first, your last!!
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  5. #5
    Join Date
    Oct 2010
    Location
    Saskatchetoon Sk
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    360
    Your bolts with straighten that right out no problem.

    As long as there is no nicks in it and the surface is smooth on the gasket you are fine.

    We use gaskets that look worse then that on semi trucks
    1982 Honda ATC 200
    1984 Yamaha 225DX


  6. #6
    Join Date
    Feb 2011
    Location
    nova scotia
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    125
    i figured it was ok but it is for my 84 cr 500 and they have enough head troubles as it is so i figured i would just be safe before i put it all back together

  7. #7
    Join Date
    Feb 2011
    Location
    nova scotia
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    125
    well it turns out this didn't matter at all i went to put my motor together and the company sent the wrong gasket they where for a cr 450 so the base gasket doesn't fit at all

  8. #8
    Join Date
    Apr 2011
    Location
    canada
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    74
    Quote Originally Posted by mrmello View Post
    Your bolts with straighten that right out no problem.

    As long as there is no nicks in it and the surface is smooth on the gasket you are fine.

    We use gaskets that look worse then that on semi trucks
    I agree 100% with top info above
    but when you retorque any head // bolt or nutts
    make sure you do it in sequence also remember nice and nice and even and flat..
    a little at each one until its down tight..when its tight a 1/4 of turn more for resealing old used gaskets..

    KEY TO RETORQUE ALLWAY MAKE SURE ITS GOING DOWN EVENLY AND FLAT..

    ALSO AFTER RUNNING IT FOR A WHILE CHECK IT AGAIN AND RETOURQUE IT AGAIN tO the PROPER SPECS.
    Or just make sure it tight..

  9. #9
    Join Date
    Aug 2008
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    louisiana
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    and never forget to use never seize.
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  10. #10
    ametzker's Avatar
    ametzker is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Feb 2011
    Location
    Oregon
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    170
    For copper gaskets if you have it, Use a propane torch just before installing it to aneal it and then put it on and torque it down. This does alot better job at sealing it in case of imperfections. I also do this if I want to reuse a copper gasket.

  11. #11
    Join Date
    May 2010
    Location
    Wichita, Kansas
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    1,361
    To properly soften(often confused with annealing) a copper head gasket, you need to heat it up very hot, and rapidly cool it. The easiest way is to toss it in a bucket of cold water. Or if you have snow laying around, toss it in there.

    Here is a simple guide. http://www.ehow.com/how_5304177_soften-copper.html

    The advantage of a soft head gasket is the ability for it to compress and seal better. Also, with this process, you can reuse copper head gaskets.

    Once it's all together, do a leak down test of the bike. I assume it's a 2 stroke by the looks of that head gasket. A leak down will tell you if there is ANY leaks.
    I just wanna go fast. If your not first, your last!!
    Reproducing the Tecate CDI. Contact me if you need one. I'm most accessible on FaceBook. You can find me on the 1984-1987 Kawasaki Tecate KXT250 Group.

  12. #12
    Join Date
    Mar 2010
    Location
    Crest California
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    The easiest way to straighten that head gasket out is to donate it to someone who can use it lol.
    LED obsessed
    2015 Yamaha FJ-09

  13. #13
    Join Date
    Feb 2011
    Location
    nova scotia
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    125
    i can use the head gasket but my base gasket and reed gaskets are to small the cr 450 is smaller that bottom of the cylinder transfer ports and studs and the cr 450 has a smaller reed opening too

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