1975 CB500T with Electronic Ignition - Page 3
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  1. #21
    Sensei 66Sprint's Avatar
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    That JUST tells you you are near TDC....Which ALSO happens twice in the four strokes......

    A simple phone call can cure this, probably in less than 5 minutes.....
    Last edited by 66Sprint; 10-19-2019 at 10:10 PM.
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  2. #22
    Junior Member Gibber2287@gmail.com's Avatar
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    Fine. I'll call you tomorrow.

  3. #23
    Sensei 66Sprint's Avatar
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    Why not now?, we're both up.......
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

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  5. #24
    Senior Member JamesPal's Avatar
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    Combustion occurs after the intake valve closes just before BDC and the piston travels up. The attachment if from the CB450 FSM. It applies to every 4 stroke engine. It takes a little bit of study to understand, but it is helpful to understand the valve - piston - spark timing. It swirl starts from the inside. if you remove the valve covers, you can see the valves move. That way you can ensure the ignition occurs during the right TDC.

    1975 CB500T with Electronic Ignition-valve-ignition-timing-swirl.jpg
    Jim Palmer
    '85 GL1200I (Garage Find)
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  6. #25
    Junior Member TwoStrikes's Avatar
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    Im in a similar boat at this. Did you get a resolution? My timing light comes on exactly at LF and F. now hesitant to start.

    EDIT:
    was 180 out on my bike. GL
    Last edited by TwoStrikes; 10-20-2019 at 08:16 PM.

  7. #26
    Sensei 66Sprint's Avatar
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    Glad my diatribe on four strokes and duplicated index alignments had the effect of your considering this possibility and resulted in the "fix"......
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  8. #27
    Junior Member TwoStrikes's Avatar
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    Quote Originally Posted by 66Sprint View Post
    Glad my diatribe on four strokes and duplicated index alignments had the effect of your considering this possibility and resulted in the "fix"......
    yup! thanks! i have to call this week with another question though!

  9. #28
    Sensei 66Sprint's Avatar
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    I'm here.......
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

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