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T120 650 cylinder head / two single Dellorto SSI Carbs

Discussion in 'Triton' started by steko, Jan 16, 2019.

  1. steko


    Oct 25, 2018

    does anyone have experience with two single Dellorto SSI carbs ?
    What is about idle adjustment, synchronisation, road performance
    and driving behaviour?

  2. kommando


    May 7, 2005
    Never seen or heard mention of those carbs being used on a Triumph twin.
  3. grandpaul

    grandpaul VIP MEMBER

    Jan 15, 2008
    If those are anything like the ones on my '74 Guzzi, they have clever fuel "pumps" inside the needle jet body that give you a nice bit of juice off-idle. I reckon they'd be great with warm or hot cams...
  4. Matt Spencer

    Matt Spencer

    Jul 25, 2010
    The fancy racing 800 8 stud P U Wideline Dunstall Triton where wod Price worked
    had 32 Dellortto pumpers on it , way back when .

    Even came on B M W s at one stage . were hot sh*t aftermarket conversion in the 70s .
  5. Matt Spencer

    Matt Spencer

    Jul 25, 2010
  6. acotrel


    Jun 30, 2012
    Lack of throttle response is often due to loss of vacuum. I don't think a rapid richening of the mixture is the answer. The quickest acceleration occurs when the mixture is held at a level just before detonation occurs, at all throttle openings. It might be better to adjust to feeding the throttle on in one rapid controlled motion, rather than whacking it open. With road racers, riders of two strokes never have a problem with throttle response because they adjust to the limitations and anticipate. On dirt, things probably don't happen any quicker.

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