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Half Rack GSXR1100 Carbs for a GS500 into a GS450

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    Half Rack GSXR1100 Carbs for a GS500 into a GS450

    I'm acquiring parts for my extra GS450 engine/frame including the GS500 pistons/cylinders, camshafts and a vintage 2-1 with supertrapp exhaust (not sure if the supertrapp is going to be in usable shape but the 2-1 is really cool!) that I already have.

    I found these "GS500" carbs on ebay that claim to be a half rack of a GSXR1100 set. Seller says they are 2-3mm bigger bore than stock and claims they will fit the stock intake boots but recommends dremeling the boots out a little.

    Are these going to be too big for the GS450/500 hybrid?
    Will be using K&N's or velocity stacks like Pete
    Last edited by sam000lee; 10-26-2017, 03:50 PM.
    1980/1981 GS450 - GS500 Cylinder + Piston Swap - "De-L'ed", custom seat, CB350 bits, 18" rear, etc.
    1977 GS550
    1977 GS750 - Cross country trip thread

    #2
    I'll have to leave commenting on the carb size to someone more knowledgeable, but I can say that the 01 GS500 carbs I have on mine seem to be good.

    I had a conversation with the Mikuni distributor for Aus who commented that a set of VM's would make my 450 wheel stand in any gear... I forget the models now but I think it was VM33's he was talking about. If I had the $$ at the time I probably would be able to tell you if that was true or not

    Sounds like a fun upgrade, keep us up to date!

    In the back of my mind once my Kat is done is to do a 450 refresh with the bottom end of a GS500, some rear sets so I can use the stock GS500 shift setup, and the 450 head so I can keep my exhaust.
    1982 GS450E - The Wee Beastie
    1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020

    sigpic

    450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh

    Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11

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