what jets for 1985 fxstc ?? opinions please.

Discussion in 'Softail Models' started by ron1978, Oct 31, 2009.

  1. ron1978

    ron1978 Active Member

    my dad says he's bike has a non cv carb on it, it has a hyper charger on it ,
    running a autolite 4265 plug, what jets would you recommend he use? the motor floods easily and fouls plugs regularly, i don't know much about a non cv carb, if any can help it will be apreciated
  2. Buster

    Buster Member

    Different locations around the country will dictate jet sizes. Generally speaking, depending on any other engine work done to the motor, cam, exhaust, etc., he probably should be running around a 45 or a 48 slow speed. Sometimes its a guessing game unless you have the good fortune of having a dyno available. Jets for the most part are pretty cheap which allows you to buy a few different sizes, replace and test drive and see which set gives you the best performance.
  3. ultrat

    ultrat Senior Member Contributor

    Non constant volicity like the older bendix carb in early 70s. main jet start at 165 go up from there. Or just pick up on ebay or swap meet a CV carb they were better carbs u will need a slip fit manifold yours probibly bolts to carb good improvement