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  • Resonator build thread

    Tuning
    4
    1 Votes
    4 Posts
    234 Views
    R

    @Rallyfinnen I think you might be right about the timing angle, one of my repeated measurements came out as cca 185°. I could have used the wrong technique when measuring; Shined a flashlight through spark plug hole and basically measured between the times I can see any light coming through, used the magnet rotor to set marks. A solid, definite number would be useful; my machine has a 3MB00 cylinder and a standard thin gasket, it is not marked with "P" and has never been bored or ported.

    As for the temperature, I didn't get reliable numbers with a multimeter probe at the flange with the exhaust off, so I opted for calculating it via BMEP which turned out right around 7.10
    The temperature would be lower at the middle of the pipe and even lower at the convergent cone, the highest temp is supposed to be right at the exit of the cylinder and if I'm not wrong, that's the part that creates the pressure wave.

  • Athina 170cc bore kit recommendations

    Engine
    10
    1 Votes
    10 Posts
    903 Views
    H

    @Irongamer727 that's really bad! im going to take everyone else advice and get a 4FU or 3MB cylinder instead with a aftermarket pipe and carb

  • 0 Votes
    3 Posts
    2k Views
    jimmydc98J

    try adjusting air/fuel mixture this should help mate i had a similar problem with mine so got it cheap he thought it had bad problem. i will probably get around to buying after market crab as mine has a small crack on the carburettor body i have my tick over screw screwed in
    all the way

  • 2 Votes
    254 Posts
    125k Views
    BluestoesonnoseB

    Once again, many thanks

  • Forum Corner

    Blogs
    98
    0 Votes
    98 Posts
    63k Views
    CalumC

    @darty Ideal for you to get on the restoration vibe 😄