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Thread: Potential Group Purchase - Wiseco GS650 741cc pistons

  1. #361
    Join Date
    Aug 2012
    Location
    Columbus, Ohio
    Posts
    2,476

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    Who is function first motorsports??? Please include your GS username and real name when sending payment! I'm not a mind reader when email address gives no clues to which user sent me a payment!

    '77 Suzuki GS750 920cc 4-1, Sun rims, GS1100E swinger, fork mods, Fox Factory Shox, Ninja/CBR900RR discs
    '74 Rickman VR250 MX
    '99 Kawasaki KDX220 rugged terrain ripper
    PROJECTS:
    '77 Rickman CR900 GS1000-1105cc roadracer Yoshi race cams Yoshi 4:1, 89 GSXR1100K fork, 310mm discs, Fox Factory Shox
    '79 GS425 489cc/GS850 sleeves, megacycle cams, GS500 fork, 310mm CBR disc, DID rims, GS1100E swingarm, Fox Factory Shox
    '77 GS550 GS650-740cc top end, CBR900RR/Ninja brake, Fox Street Shox

  2. #362
    Join Date
    Mar 2016
    Location
    East Wallingford Vermont
    Posts
    50

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    Quote Originally Posted by Chuck78 View Post
    Who is function first motorsports??? Please include your GS username and real name when sending payment! I'm not a mind reader when email address gives no clues to which user sent me a payment!

    Chuck,
    That is from me, I was not aware my name does not show on my PayPal.
    Regards,
    Charlie North
    Regards, Charlie
    '66 Hustler cafe build
    '78 GS 750E sitting
    '79 GS 550 ex racebike soon to be a 740
    '83 GS 550ES with a 5-11 swap
    '75 Ducati Sport, stock and will remain so

  3. #363
    Join Date
    Aug 2012
    Location
    Columbus, Ohio
    Posts
    2,476

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    Also, if you don't have your carbs sorted, there's a guy Ian selling a set of GS650 carbs (more proper needle jet and air jet sizes vs GS550 BS32's) & spare parts and dynojet kit for $250 obo. Too much for me as I have other plans but these will help substantially vs gs550 cv carbs.

    I think 1980 GS750 bs32 carbs would be an excellent starting point.

    I'm going vm28 mikunis and some boot spacers. If it were my primary bike I'd be going Keihin CR29 smoothbores


    Info on 650 carbs and dynojet kit (excellent slide needles!)
    From a PM with him:

    Quote Originally Posted by slink6333
    slink6333 is offline
    Forum Newbie
    Join Date
    Mar 2016
    Location
    Boston
    Posts
    9
    Default Re: carbs
    Quote Originally Posted by Chuck78
    Quote Originally Posted by slink6333
    hey, the carbs and all spar parts for them are still available, are you still interested?

    I was hoping for about 250 shipped, which would include all of the spare parts as well

    -Ian

    '77 Suzuki GS750 920cc 4-1, Sun rims, GS1100E swinger, fork mods, Fox Factory Shox, Ninja/CBR900RR discs
    '74 Rickman VR250 MX
    '99 Kawasaki KDX220 rugged terrain ripper
    PROJECTS:
    '77 Rickman CR900 GS1000-1105cc roadracer Yoshi race cams Yoshi 4:1, 89 GSXR1100K fork, 310mm discs, Fox Factory Shox
    '79 GS425 489cc/GS850 sleeves, megacycle cams, GS500 fork, 310mm CBR disc, DID rims, GS1100E swingarm, Fox Factory Shox
    '77 GS550 GS650-740cc top end, CBR900RR/Ninja brake, Fox Street Shox

  4. #364
    Join Date
    Mar 2016
    Location
    East Wallingford Vermont
    Posts
    50

    Default

    I have the Mikuni 29 smoothbore pumpers on my 550 now. I have run these since the bike was very young. Part of me says keep these on the new motor and part of me says to change to BS32 or 34 carbs. When I was racing I did not like the feel of the BS32s when the bike was heeled to it's limit, but that probably will not matter to me now. I do have a set of BS34 here but they are on a wide rack so they are not suitable as are.
    Regards, Charlie
    '66 Hustler cafe build
    '78 GS 750E sitting
    '79 GS 550 ex racebike soon to be a 740
    '83 GS 550ES with a 5-11 swap
    '75 Ducati Sport, stock and will remain so

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