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  1. BSA750four

    jet sizing with a sidecar

    I have a 1982 cb750k2 engine with Keihin VB52A inline carburettors. The standard size main jet is 102, mine has 98's installed. The previous owner has four DNA airpods fitted. Above 3500 rpm, when the main jet cuts in, the bike pops and bangs and stutters. I think the jetting is too lean...
  2. BSA750four

    Fuuel type in 1982 CB750 engine

    Hello everyone, I am new to the forum. I have several bikes. One I bought 18 months ago is a BSA fitted with a CB750K engine. My first question is, what type of petrol should I be running though it. The previous owner, used an octane booster additive. I am running on Shell VPower 99 fuel. I am...
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