setting up 12mm del carb on nrg

Discussion in 'The Workshop' started by stephen_h, Oct 22, 2008.

  1. stephen_h

    stephen_h Member

    Messages:
    138
    im trying to help someone setup there carb on his nrg. the engine is standard deristricted with a polini variator, doppler sr3, 12mm dell carb and is air cooled if that changes owt. hes got a 75 main jet in at minute, top end is good but theres a dead spot he says. was looking for a guide for standard jet sizes but cant seem to find one anyware. am i right in thinking with this setup the main jet needs to be around the 68 mark?

    thanks steve
     
    stephen_h, Oct 22, 2008
    #1
  2. Vesta

    Vesta New Member

    Messages:
    2,615
    Lmao thats near enough the same setup as mine, i've been through jets im on a 75 at the minute and its still rich so 68 sounds about right
     
    Vesta, Oct 22, 2008
    #2
  3. icerider50

    icerider50 New Member

    Messages:
    42
    nrgs dont have 12 mm carbs they have 17.5s
     
    icerider50, Nov 4, 2008
    #3
  4. Vesta

    Vesta New Member

    Messages:
    2,615
    Some/all mc2's have 12mm pal. Before 2001 Y reg.
     
    Vesta, Nov 4, 2008
    #4
  5. Aerox-lad

    Aerox-lad New Member

    Messages:
    904
    dead spot could be down to rollers tho..
     
    Aerox-lad, Nov 4, 2008
    #5
  6. typh70

    typh70 New Member

    Messages:
    592
    probably find its the rollers.
     
    typh70, Nov 4, 2008
    #6
  7. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

    Messages:
    14,276
    Rides:
    et2 monster
    clutch springs and rollers... if the dead spot is first pull away its rolers.. if it go's then drops off then go's again its rollers..,

    jets arnt magic.. they dont COMPLETLY set your bike up, there merly one aspect
     
    MiNoR cOnFuSiOn, Nov 4, 2008
    #7

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