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Discussion Carb replacement - FZR250

Discussion in 'Yamaha 250cc In-Line 4's' started by logan anderson, Dec 2, 2021.

  1. logan anderson

    logan anderson Active Member

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    Ok, so I think we can all agree that the stock carbs are...... a little problematic at times
    Has anyone actually thought about alternative setups that might work (obviously a efi setup would be mint but finding stock items to piece together are a little hard to come by)
     
    logan anderson, Dec 2, 2021
    #1
  2. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    The solution exists, its 4x Keihin FCR, but it isn't cheap.

    https://japan.webike.net/products/1228151.html

    I also read on this forum somewhere that CBR250RR and ZXR250 carbs could be re-spaced and have throttle cam modified to fit FZR250 carb spacing
     
    Linkin, Dec 2, 2021
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  3. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    A few threads for you to peruse

    https://www.2fiftycc.com/index.php?threads/fzr250-3ln1-or-3ln3-5-keyster-kits.11622/

    https://www.2fiftycc.com/index.php?threads/alternative-carburettors-fzr250-3ln1.11370/

    I'm waiting on a 2.52mm reamer from the UK to get the needle slop in the carb slide issue sorted

    https://www.2fiftycc.com/index.php?...t-whered-2-months-go.11199/page-5#post-142810

    I wouldn't piece together an EFI system, I would transplant the entire loom, ECM/ECU etc and then get a pair of twin throttle bodies - some good candidates out there

    Then modify the fueling and ignition maps
     
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    ruckusman, Dec 2, 2021
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