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Thread: Base line timing

  1. #1
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    Base line timing

    Got a motor when took apart to install new cam, noticed ther isn't any dot on crank gear. Can someone tell me away to figure out where cam and crank gears should come together. I have a degree wheel. Alittle lost

  2. #2
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    Need to know what kind of engine and size.

  3. #3
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    196 clone , crank is Honda

  4. #4
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    with piston at top dead center , Look at the cam and find the middle point of the overlap. That is where the two lobes meet. There will be a spot where they will lift the valves, or lifters approximately the same amount. the exhaust is closing and the intake is opening. Put that pointing to the center of the lifter boss. that will get you close enough to fine tune it with the degree wheel. Usually won't be off more than one cog.Use the centerline timing to get it exact.

    Or look up the specs and see the timing of the center-line of Of either lobe and set the degree wheel to that degree , install cam with that lobe pointing exactly towards the lifter hole.

  5. #5
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    There should be a mark is it on the crank throw.
    If you have a old crank look at it .
    Someone's surely got a crank out.

  6. #6
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    Airtight Garage Est 1982
    Waller Racing
    Phantom Chassis
    Dover Power
    Paid 4 cycle subscriber

  7. #7
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  8. #8
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    Thank you for taking time to help

  9. #9
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    did you find anything concrete?

  10. #10
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    I'm wondering if its in-line with the flywheel key?
    All the crank turning articles and cam timing and not one good picture or explanation of where the dot is.
    I've only got some flathead cranks with me so they won't help.
    Airtight Garage Est 1982
    Waller Racing
    Phantom Chassis
    Dover Power
    Paid 4 cycle subscriber

  11. #11
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    Out of town gonna try figure out Sunday nights get I did find cam card

  12. #12
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    Hold the crankshaft at TDC the mark will be 5 teeth clockwise. Some are very faint but all I checked are marked. Count the tooth that is straight up at TDC as 1 the 5 th will be marked.

  13. #13
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    Great information. Thanks kart43

  14. #14
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    So atTDC your saying crank mark should be 5 teeth clock wise. Now is the starting point of teeth say..... No. one tooth is that gonna be at the centerline of cylinder?

  15. #15
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    My take is looking at the crank the center of the rod journal is the tooth you start with.

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