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Thread: intake boot o-ring

  1. #1
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    Default intake boot o-ring

    ordering new carb o-rings, and should probably order new intake boot o-rings too

    info says part 09280-40010 is the correct ring, with an OD of 39.7

    if i order from cycleorings.com, do i need the 38mm rings, or the 40mm rings?
    1985 Suzuki GS450L

  2. #2
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    looks like he no longer carries the 450 carb o-ring kit. Still has the 40mm boot o-ring
    1981 gs650L

    "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

  3. #3
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    yet more crap that doesnt make sense on this bike.

    the groove the o-ring sits in does not match the OEM number

    these are my groove measurements- https://imgur.com/a/I8Vfezu

    Id is 40.12 mm, OD is 46.23mm

    that's way off the oem measurements. what gives?
    1985 Suzuki GS450L

  4. #4
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    Quote Originally Posted by tom203 View Post
    looks like he no longer carries the 450 carb o-ring kit. Still has the 40mm boot o-ring
    says he doesn't have the 80-82 gs450 rings. mine's an 85, with 83 carbs coming to replace the busted ones it came with
    1985 Suzuki GS450L

  5. #5
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    Harbor Freight metric oring box. And if the groove id is what you posted then its a 40mm oring.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

  6. #6
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    i have a set, but they're nitrile. this o ring is supposed to go directly onto the engine. isnt that bad for nitrile?

    edit: im a fricken moron. the suzuki oem part is 39.7mm INNER diamater, not outer. so it'll fit just fine
    1985 Suzuki GS450L

  7. #7
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    Im not sure about heat and nitile but ive used HF nitrile orings in fuel tubes without issues.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

  8. #8
    Nessism's Avatar
    Nessism is online now Forum LongTimer GSResource Superstar
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    Must have viton O-rings for the intake boots.

    O-rings are sized bases off ID and thickness.

    It's advised to replace the boots if they are original. If they are not cracked already they will soon.

  9. #9
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    Quote Originally Posted by Nessism View Post
    Must have viton O-rings for the intake boots.

    O-rings are sized bases off ID and thickness.

    It's advised to replace the boots if they are original. If they are not cracked already they will soon.
    the boots are in great shape. no visible cracks or rotting, the rubber is nice and pliable. put em on a scooter engine i got lying around and had no vacuum leaks
    1985 Suzuki GS450L

  10. #10
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    Quote Originally Posted by SkyfangR View Post
    the boots are in great shape. no visible cracks or rotting, the rubber is nice and pliable. put em on a scooter engine i got lying around and had no vacuum leaks
    Tell you what, I won't respond to any of your posts anymore because you always have all the answers and know all.

    Good luck (I mean it.)

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