cam timing to TDC
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Thread: cam timing to TDC

  1. #1
    Junior Member jimbo slice's Avatar
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    I've read 2 references to tdc. First between the 2 lines with the dash between (on the crank). Second is the 3rd line. After putting a screwdriver in the plug hole I've found the third to be true. But do I put my cam mark at tdc the same as the 3rd mark on my crank?
    jimbo slice

    2005tw, 2in riser, jimbo shield, hand gaurds, stage1 cam shaft, oring chain, cyclerack rear rack

  2. #2
    Senior Member uktw125's Avatar
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    Set it at the third line on the crank.

  3. #3
    Senior Member sinophilia's Avatar
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    You can also take down the camshaft sprocket cover and align the mark on the sprocket... I find it easier.
    Fred likes this.
    Red Max - 1996 TW200 - 14/45, 320mm toothed brake disc, X-Racing titanium exhaust, Ricochet skid plate, Mule hitch pins, large pegs, VeeRubber VRM274&275 tires

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  5. #4
    Junior Member jimbo slice's Avatar
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    thanx. but what im trying to ask is while my crank is at tdc (3rd line). should my cam sprocket also be tdc.
    jimbo slice

    2005tw, 2in riser, jimbo shield, hand gaurds, stage1 cam shaft, oring chain, cyclerack rear rack

  6. #5
    Senior Member uktw125's Avatar
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    Quote Originally Posted by jimbo slice View Post
    thanx. but what im trying to ask is while my crank is at tdc (3rd line). should my cam sprocket also be tdc.


    Yes, crank at TDC (3rd line), the cam sprocket has a line that should point to a cast in pointer on the head, it's just a little triangle, looks a bit like an arrow head.

  7. #6
    Senior Member admiral's Avatar
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    Quote Originally Posted by uktw125 View Post
    Yes, crank at TDC (3rd line), the cam sprocket has a line that should point to a cast in pointer on the head, it's just a little triangle, looks a bit like an arrow head.




    uktw125,



    I've not had to tear my engine down, nor do I hope I have to anytime soon, but as a bystander, I appreciate your assistance you give to other forum members with some of their technical questions.



    Just wanted to say thanks.
    Fred likes this.
    Hidden Content A ride in the woods helps me relax and release tension. The fact I'm dragging a body should be entirely irrelevant?

  8. #7
    Senior Member uktw125's Avatar
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    Thanks Admiral, a little appreciation is always nice to read.

  9. #8
    Senior Member RodneyReed's Avatar
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    Quote Originally Posted by uktw125 View Post
    Thanks Admiral, a little appreciation is always nice to read.


    Yeah, that uktw125 knows these engines like the back of his hand.

  10. #9
    Senior Member PJungnitsch's Avatar
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    This is as good a place to put this as any, I guess.



    On my '96, when the crank mark is where I think it should be:







    The camshaft mark isn't:







    When the cam mark is lined up properly:







    The crank mark is past:







    Any ideas?



    Just came to me, I've got the head off, so it will be easy to see if TDC of the piston is the same as the crank mark.

  11. #10
    Senior Member uktw125's Avatar
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    Either your cam timing is one tooth out or your timing chain is very worn. Did it run well without any bad rattling.

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