250 C firing point
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Thread: 250 C firing point

  1. #1
    RUSSBUS
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    RUSS
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    250 C firing point

    I have just rebuilt my 2C ready for the Manx GP, I had it up and running a while back but dropped a gear selector fork testing it at my local airport runway.
    When I first got the bike running I swapped the existing electronic ignition with a powerdyno set up, however I have lost my detailed piece of paper with the timing notes on does anyone know off hand where the firing point is before TDC on the 250C.
    1.5mm before TDC rings a bell I have clocked it up to that down the pot as a starting reference but now I am having doubts as I have very little knowledge in my head and loads of bikes.

    Many thanks

    Russ

  2. #2
    Senior Member DenH's Avatar
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    DENIS
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    russ as far as i know most 2 strokes are set about 18 ~ 20 degrees btdc.

  3. #3
    RUSSBUS
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    Many thanks I will check that corresponds with my depth check onto the piston, anywhere close will do for now.

    Russ

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  5. #4
    Senior Member
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    steve peace
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    Hi
    Email Pete on [email protected] he has all the info you need for a quicker response tel 01773 875085
    Cheers steve

  6. #5
    Senior Member R Powell's Avatar
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    Richard Powell
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    It says 18 degrees in the benelli manual or 17mm measured on the outside of the rotor if that makes sense.
    It also says1.35 mm before tdc in the benelli manual page 35 I think this is what you are looking for.
    if you join the Benellimotobi club you can download these manuals for free!

  7. #6
    RUSSBUS
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    RUSS
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    Hi Folks panic over the bike started up second kick and has been road tested ready for the Manx GP next week, it sounds load and I have already had the usual complaints from all the neighbours I get whenever I am getting ready for my holiday in the IOM.

    If anyone going give me a nod if you see a shiny green 2C blown up at the side of the road.

    Russ

  8. #7
    Senior Member
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    steve peace
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    Hi Russ
    If you are on the Island on Tues 26th Aug come down to the Italian night at Port Erin Train Station about 5.30/6.00 pm
    Cheers Steve

  9. #8
    RUSSBUS
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    RUSS
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    Oh we will be there, we have my 2C a 'little Ant' Moto Rumi and a Gilera CX125 to show off.

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