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Thread: big bore headgasket needed

  1. #1
    fla 2-stroke's Avatar
    fla 2-stroke is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    big bore headgasket needed

    I am finally getting around to installing my 300 kit on my 83 250r.the stock head gasket is way to small.does anybody know where I can find the correct 7 stud copper gasket.thanks

  2. #2
    Billy Golightly's Avatar
    Billy Golightly is offline Always finding new and exciting ways to not give a hoot in hell Catch me if you can
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    Might be hard to find one for the aircooler but I'd try calling Cometic and see what they can do for you. http://www.cometic.com/contactus.aspx

  3. #3
    Join Date
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    a honda fl-350r oddessy gasket will work I'm told I don't no this for a fact but thats what has been said
    Trikes currently owned
    E.T. trike 150H.P. and climbing Pure DRAG beast
    85 250r project

  4. #4
    fla 2-stroke's Avatar
    fla 2-stroke is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    thanks for the info.does anybody know for sure if the 350 gasket is 7 bolt and will work.thanks again guys.

  5. #5
    82300R is offline Got The Holeshot Arm chair racerJust too addicted
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    Quote Originally Posted by fla 2-stroke
    I am finally getting around to installing my 300 kit on my 83 250r.the stock head gasket is way to small.does anybody know where I can find the correct 7 stud copper gasket.thanks
    check in the classifieds.
    I got a roll a quarters an making change !

  6. #6
    ATCR250R's Avatar
    ATCR250R is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    If you search the boards I have found the 350 gasket fits but it has to be for the 329cc engine I believe it was and it does have the 7 studs. Or just buy 82300R's... I would if I had the money right now man!
    ATCless at the moment...

    1977 Firebird Formula
    1997 Suzuki RM250

  7. #7
    Join Date
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    This may help.

    http://3wheelerworldforums.com/showt...highlight=300r

    Also you can do a search using my username and it should pop up a lot of 300R info. I did a pretty good write up during my build.

    Lots O Trikes!!!!!
    TRIKEFEST 03, 04, 05, 07, 09 Going the distance

  8. #8
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    if its copper can you hone it out to fit?/ or file it
    copper is soft

  9. #9
    gotballs 250r 82's Avatar
    gotballs 250r 82 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Gasket no problem

    Cometic will have what you need here is part #base gasket BO297 The head gasket # is HO511. And that is for a honda atc 300 1981-84 77mm
    82 300R tricked
    02 blaster wife's
    83 suzuki 250 dirt bike
    82 300R drag monster
    2007 suzuki hayabusa sweet street bike

  10. #10
    82300R is offline Got The Holeshot Arm chair racerJust too addicted
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    looked those numbers up and all that comes up is the stock gasket set. 72mm. maybe i should pull the plug if they are that readily available.
    I got a roll a quarters an making change !

  11. #11
    Join Date
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    I just called Cometic about making me a .020in thick copper head gasket for my .010 over bore 85 Honda 250R and they quoted me about $28.00 shipped. Prety sweet for a custom head gasket if you ask me.
    Current Bike:
    1985 Honda 350X

    Bikes owned:
    1984 Honda 200X
    1982 Honda 250R
    1985 Honda 350X x3
    1985 Honda 250R x2
    1985 Honda 500X

  12. #12
    Billy Golightly's Avatar
    Billy Golightly is offline Always finding new and exciting ways to not give a hoot in hell Catch me if you can
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    Cometic will make/do just about anything, and their gaskets are very high quality

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