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Thread: Cam timing.

  1. #1
    Join Date
    Jul 2018
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    TN
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    Cam timing.

    Is there a degree wheel in existence for the 200cc series Honda engines?
    The cam sprocket is merely pressed on and hope for the best. This is garbage.
    The thing should have been keyed in time.
    I realize they’re tough and ready little engines but half a tooth worth of cam timing could make the difference between running and running awesome.

    I love the 200cc engines and IMHO they’re one of the best Honda ever designed but this is goof a moment on their part.
    Amateur Resurrectionist

  2. #2
    Scootertrash's Avatar
    Scootertrash is offline Just Too Addicted: Protecting Our Community Lord of the trike
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    Not sure if it's still available. I believe there was another company that made an adjustable gear also, can't remember who right off the bat

    http://dratv.com/atatcamsp.html
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  3. #3
    Join Date
    Jul 2009
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    South Florida
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    The lower cam sprocket should line up exactly center of tooth to keyway and with a new timing chain it should be spot on .
    A few companies offered an adjustable upper cam sprocket , powroll , big Al’s .
    Or just take a stock sprocket and make your own .
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  4. #4
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    Seems crazy to have an adjustable set up without a degree wheel though.
    You’d just pissing in the wind.
    Amateur Resurrectionist

  5. #5
    Join Date
    Oct 2002
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    You can use a degree wheel. You have to make an adapter to get out from the crank threads...

    If you need a sprocket oval milled out, I have a mill, easy cheesey...
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  6. #6
    Join Date
    Jul 2009
    Location
    South Florida
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    Not rocket science just line the dots at 12 o’clock . No degree wheel needed unless your talking a high rev performance cam .





    Quote Originally Posted by Gabriel View Post
    Seems crazy to have an adjustable set up without a degree wheel though.
    You’d just pissing in the wind.
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
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    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

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  7. #7
    Join Date
    Jul 2018
    Location
    TN
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    Shortline, I’m talking about the crank sprocket. There’s no way to index it during installation. It’s just pressed on there.
    It could perfect or partially advance or retarded.


    I’m just tearing a crank down and was thinking about how the cam drive works.
    Nothing fancy.
    Amateur Resurrectionist

  8. #8
    Join Date
    Nov 2018
    Location
    NC
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    58
    Parts unlimited makes an adjustable cam sprocket that fits the 200x, was looking at when I built mine. I have seen the kit for degreeing the cam at web camshafts, should be all you need.

    https://www.ebay.com/itm/Parts-Unlim...edirect=mobile

    http://www.webcamshafts.com/pages_ve...onda/1710.html

  9. #9
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    Quote Originally Posted by Gabriel View Post
    Shortline, I’m talking about the crank sprocket. There’s no way to index it during installation. It’s just pressed on there.
    It could perfect or partially advance or retarded.


    I’m just tearing a crank down and was thinking about how the cam drive works.
    Nothing fancy.
    Why would you want to index the crank sprocket? The crank is indexed from the fly wheel by the woodruff key.
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  10. #10
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    Yes...but nothing indexes the cam drive sprocket to that.
    Obviously you’re not going be off more than a tooth because you just skip the chain up to the next closest link but you can’t more accurate than that.
    Again, Honda should have keyed the cam drive sprocket to the crank and the cam drive sprocket would also have be properly timed when the keyway is broached.
    Amateur Resurrectionist

  11. #11
    Join Date
    Mar 2010
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    Slidell, LA
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    Quote Originally Posted by Gabriel View Post
    Yes...but nothing indexes the cam drive sprocket to that.
    Obviously you’re not going be off more than a tooth because you just skip the chain up to the next closest link but you can’t more accurate than that.
    Again, Honda should have keyed the cam drive sprocket to the crank and the cam drive sprocket would also have be properly timed when the keyway is broached.
    Broached? I assume you mean if you shear a key? Instead of indexing the crank gear Honda engineers should have spent more time designing an external kicking mechanism that wasn’t a PITA on the 200X.
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  12. #12
    Join Date
    Jul 2009
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    Yep I understand your talking about the crank sprocket alignment , I have rebuilt hundreds of 200x cranks .
    When you press the gear back on the crankshaft align the center of the sprocket tooth perfectly to the keyway .



    Quote Originally Posted by Gabriel View Post
    Shortline, I’m talking about the crank sprocket. There’s no way to index it during installation. It’s just pressed on there.
    It could perfect or partially advance or retarded.


    I’m just tearing a crank down and was thinking about how the cam drive works.
    Nothing fancy.
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

    My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10

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