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Back to Mikuni carbs

Discussion in 'Vincent' started by 998cc, Aug 10, 2019.

  1. 998cc

    998cc "Cheap" is rarely the least expensive. VIP MEMBER

    Joined:
    Oct 1, 2018
    As desirable as is keeping the original 289/276 carbs on the Shadow, I have decided to go back to the Mikunis and have ordered the Mikuni adapters from VOC Spares.

    I had installed 30mm VM's on the bike back in 1982 using home made adapters. The carbs were never set up properly; however, it ran fairly well though a bit on the rich side. I will address that this time around. The Victory manual has good info but nothing specifically for Vins. Any suggestions for basic setup of jets, needle, etc.?

    Thanks.


    ~998cc
     
  2. 998cc

    998cc "Cheap" is rarely the least expensive. VIP MEMBER

    Joined:
    Oct 1, 2018
    After posting this, I realized I left out a vital piece of information. I had re-jetted the Mics for my T140 and failed to note the original jet/needle configuration. The original jetting itself would have been a fair starting point. :confused::confused::confused::confused:
     
  3. worntorn

    worntorn

    Joined:
    Dec 22, 2006
    I removed 30 mm Mikunis and replaced them with new 34s on my Rapide( 35 mm ports)
    John McDougall gave me starting points for jetting.
    I started with that then moved up and down a bit with the main jets then came back to the starting point as best.
    Trouble is, I don't think I wrote any of this down!
    Will have a look.

    Glen
     
  4. 998cc

    998cc "Cheap" is rarely the least expensive. VIP MEMBER

    Joined:
    Oct 1, 2018
    No worries on the 30mm specs, Glen. Just received the carb adapters from VOC Spares yesterday--they need a little internal streamlining prior to using. This will likely be a long-ish term project. Too many irons in the fire. :)


    ~998cc
     
    worntorn likes this.

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