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Thread: 85 Honda 250SX gasket question

  1. #1
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    Question 85 Honda 250SX gasket question

    Does anybody have a part number or a place that I can go to to buy a gasket that's between the carb and engine? It's the one with 2 bolts that bolts directly to the engine. I've searched and can't seen to find it.

    Thanks in advance!
    1974 Honda 90 1st 3 wheeler (sold)
    1985 Honda 200M (sold)
    1985 Honda 350 Odyssey (sold that was a big mistake)
    1985 Honda 250SX 3rd owner

  2. #2
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    78 atc 90/180cc Dickson Full Suspension
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  3. #3
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    I read that as being the intake. As far as I know, they aren't available new. You will have to look for a used one.

  4. #4
    Homeless Dave's Avatar
    Homeless Dave is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I believe they are the same as the one from a 250es, i know i have one of those some where, ill look around to see if i can find it, ill give it to you if you pay for shipping (assuming i can even find it).
    Currently : trx400fw, ct70, 250es,200x, xl80s, 350x, 350x, Trx250X,ALT185

  5. #5
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    Click image for larger version. 

Name:	zzzzzz.jpg 
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    Thanks!
    I think this is the gasket I need. I can only find it in the top end gasket kit.
    1974 Honda 90 1st 3 wheeler (sold)
    1985 Honda 200M (sold)
    1985 Honda 350 Odyssey (sold that was a big mistake)
    1985 Honda 250SX 3rd owner

  6. #6
    Homeless Dave's Avatar
    Homeless Dave is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    i thought you were referring to the intake boot....
    Currently : trx400fw, ct70, 250es,200x, xl80s, 350x, 350x, Trx250X,ALT185

  7. #7
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    The intake boot only uses an O-ring , look at the link I provided .
    The picture your showing is the timing tensioner gasket .



    Quote Originally Posted by sg5492 View Post
    Click image for larger version. 

Name:	zzzzzz.jpg 
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Size:	5.5 KB 
ID:	261045

    Thanks!
    I think this is the gasket I need. I can only find it in the top end gasket kit.
    Last edited by shortline10; 12-16-2019 at 07:44 PM.
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

  8. #8
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    Now I see what you're talking about and I'm not even sure this was put together right from the guy I bought it from or maybe even before him, who knows. I'll go by the numbers of the diagrams so you can see what I have:
    #8 Carb insulator has O ring #22 which I'm sure I need and I also have carb insulator #9 but only has an O ring on one side of it. When I pulled this apart months ago, the 2 O ring pieces were together and siliconed. And the gasket I referenced earlier was on the head. Now do I need both carb insulators and if so, O ring #23 is no longer available, so would #22 work on the #8 carb insulator? I can try to load pics later.
    1974 Honda 90 1st 3 wheeler (sold)
    1985 Honda 200M (sold)
    1985 Honda 350 Odyssey (sold that was a big mistake)
    1985 Honda 250SX 3rd owner

  9. #9
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    Most auto parts stores sell gasket paper, or a piece of cereal box cardboard is often used...
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

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