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Thread: Weber accelerator pump nozzle valve screw

  1. 10-25-2014, 02:24 AM #1
    geracing2000
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    Exclamation Weber accelerator pump nozzle valve screw

    Hi guys.
    I've missed one of the screws/valves that goes on top of the accelerator pump nozzle on Weber IDS.
    I looked on a set of IDTP that i have apart and the shape of the two valves/screws are a little bit different. The main difference is that the one i need (on the right side) has 4 holes on the side while the one in the left (taken from the IDTP) has only two holes.
    Because the valve i missed seems to be no longer available, do you think that using the other one would affect on the performance of the carb?
    Thanks
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  2. 10-26-2014, 04:05 AM #2
    John912
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    Check with Kurt at PartsKlassik

    http://www.partsklassik.com/Default.aspx?
    John Schiavone

    Connecticut

    356 Cab, 66 911, 914-6, 550-Beck, 981 Cayman, 54 MV Agusta Dustbid
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  3. 10-26-2014, 09:22 AM #3
    geracing2000
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    Thank you John but i've already checked at Partsklassik. They have the one on the left side.
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  4. 10-28-2014, 07:24 AM #4
    1QuickS
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    Valves are the same. The one on the right is the earlier version and was susceptible to twisting during installation, hence the thicker body on the later version shown on the left. Remember to peen the lead plugs in the top since these can come loose and release the steel check ball into your engine.
    Paul Abbott
    Early S Member #18
    Weber service specialist
    www.PerformanceOriented.com
    info@PerformanceOriented.com
    530.520.5816
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