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  1. #1
    canuck's Avatar
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    Cam Timing, my head hurts !

    Re assembling an 05 block after installing new valves. All pictures were taken with the head torqued down, tensioner installed and crank and cam locked with the proper tools.

    These pictures are taken one tooth in either direction.

    Click image for larger version. 

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    Cam gear moved one tooth CW.

    I was going to use the second set of pics for reassembly as the marks are closer to where they were before I took it apart, any reason to do something different ?
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  2. #2
    canuck's Avatar
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    For reference these are the marks Before it was taken apart.
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  3. #3
    Moderator beerdart's Avatar
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    As long as the crank and cam are locked and tensioner in tight it does not matter where the 1503 marks are.

  4. #4
    dsteinmann's Avatar
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    Quote Originally Posted by beerdart View Post
    As long as the crank and cam are locked and tensioner in tight it does not matter where the 1503 marks are.

    Yes the manual says either one (or whaterver is closer)

  5. #5
    canuck's Avatar
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    The timing of the crank and cam is mechanically the same in both positions as everything is locked down the only thing that moves between the two choices is the slug on the cam gear for the cam sensor to read. Does it make a difference between the two choices where this slug ends up ?

  6. #6
    Quote Originally Posted by canuck View Post
    The timing of the crank and cam is mechanically the same in both positions as everything is locked down the only thing that moves between the two choices is the slug on the cam gear for the cam sensor to read. Does it make a difference between the two choices where this slug ends up ?
    No

  7. #7
    srjrinc's Avatar
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    Quote Originally Posted by Sea Dood View Post
    Quote Originally Posted by canuck View Post
    The timing of the crank and cam is mechanically the same in both positions as everything is locked down the only thing that moves between the two choices is the slug on the cam gear for the cam sensor to read. Does it make a difference between the two choices where this slug ends up ?
    No
    Right, I was just doing the same thing last night on my 05 RXP rebuild, I was not able to get the "1503" marks perfect
    a cross the head, as long as everything is locked down, so should be good!

  8. #8
    Can you check the compression in either position?

  9. #9
    ncdoo's Avatar
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    Just make sure the #3 cylinder (front) is at TDC and the cam is locked. Then get the 1503 marks as level as possible. And yes you can check the compression in either position

  10. #10

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    I did mine with the cam and crank pinned the cam gear slightly counterclockwise with relation to the 1503 marks. Chain tight on the left side all slack to the right. Bolts started and run in on the cam gear but not tight. I left the tensioner out on the left side and installed the hydraulic tensioner on the right slowly. That pulled the marks on the cam gear in nearly perfect alignment. Then I slid the tensioner in on the left. I ran the engine around a few times by hand and everything aligned back up.

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