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Thread: Amal 930 Jetting on a '74 Eldorado Police

  1. #1
    apriliaforum newb
    Join Date
    Sep 2013

    Amal 930 Jetting on a '74 Eldorado Police

    I've got the original 850 engine back in the Eldorado and need some help getting the Amal carbs jetted in correctly. It currently is running a 220 main and 106 needle jet, not sure what throttle needle it has (3 grooves, currently on the middle notch). Start and idle are perfect, initial acceleration is ok but bogs at mid throttle on up. No pinging on throttle application. This set up is the best it has been.

    I tried a 230 main jet and it was too rich. Loaded up the plugs and bogged down mid to full throttle. First and third groove on the needle were too lean and too rich.

    I haven't done anything with the Pilot Jet. Not even sure which one it has.

    This bike has a lot of parts in boxes. VHB carbs that are partially disassembled, throttle cables cut, another set of corroded and disassembled Amals (where I got the other jets 230/105) so I'm not sure what was on the engine originally and don't have a baseline to go from. Aside from trying to figure out new carbs and jetting I'd like to get these Amals running correctly.

    If anyone has a resource (Pete?) that lists the original jetting in the Amals (as a baseline) on 850 Eldorados I'd appreciate it. The engine has new barrels and pistons but is stock displacement. Stock header pipes, no crossover with some aftermarket mufflers.


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  2. #2
    Honest always, feared often Micah / AF1 Racing's Avatar
    Join Date
    Jun 2003
    37 miles E. of ATX, TX USA.
    Move needle to bottom slot, try richening up the mid throttle fueling this way, may need to reduce main jet size further if “raising” the needle alone doesn’t fix issue.
    Diminished expectations is the key to happiness in life.

    Micah Shoemaker
    AF1 Racing
    9900 IH35N
    Austin, TX 78753

  3. #3
    apriliaforum expert pete roper's Avatar
    Join Date
    Mar 2008
    Talk to Charlie at Antietam Classic Cycles. If Charlie doesn't know? Well? You're fucked!
    Professional Goat Burster.

  4. #4
    apriliaforum newb
    Join Date
    Sep 2013
    Thanks guys. I sent Charlie a message. Also ordered a pair of both 190 and 200 main jets.

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