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No Idea

Discussion in 'XJ Technical Chat' started by Joe34, Oct 2, 2017.

  1. Joe34

    Joe34 Active Member

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    Well I got the valve pads in place. But I cant figure out the dam cam.
    I can't figure out the manual to properly line it up so its in time with the other one. 20170926_191554.jpg
     
  2. Polock

    Polock Well-Known Member

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    take the bolts out of the cam sprockets but keep the sprockets on the "ledge" where they will go.
    spin the crank to tdc, (sprockets spin but not cams.)
    tensioner in and ready to go
    spin the cams to lineup the cam marks. (crank and chain don't move)
    drop the sprockets one at a time to line up the holes, if they don't line up make them them the same distance the same way and move the crank to make them line up
    put the bolts in loose
    rotate the engine forward gently one rev of the cams and check all the marks again
    you might have to jump the chain one tooth either way and the marks might not be perfect
    the adjustment will be one tooth either way, it will be close or obviously wrong
     
    Last edited: Oct 3, 2017
  3. Polock

    Polock Well-Known Member

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    that's not right, when the cams and crank are lined up you have to drop the sprockets off the ledge one at a time and jump the chain till the holes line up.
    they won't be perfect but make them the same way, the same distance, then move the crank to line them up
     
  4. XJ550H

    XJ550H Well-Known Member Premium Member

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    upload_2017-10-3_12-36-32.png upload_2017-10-3_12-36-58.png


     
  5. XJ550H

    XJ550H Well-Known Member Premium Member

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  6. XJ550H

    XJ550H Well-Known Member Premium Member

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  7. Joe34

    Joe34 Active Member

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    I just don't get it. Time to hire a mechanic.
     
  8. Joe34

    Joe34 Active Member

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    So got the cam in but at tdc the ex and in marks don't line up with cams. Looks like the ex might be off one tooth and the intake 2 teeth.
    Can I just unbolt the sprockets and turn the cams in place and jump the sprokets on the chain????.
     
  9. Joe34

    Joe34 Active Member

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  10. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    You don't need to unbolt the sprockets. You need to move the cams by lifting the slack chain off of the sprockets. You do still have the cam chain tensioner removed, and the front cam chain guide out, correct?

    Keep in mind that the minimum adjustment you can make is one-tooth. As the cam chain wears the indexing marks will not line up perfectly, and that is normal. Being a whole tooth (or more) off is correctable, but being less than a tooth off is not (and correcting that is not necessary since the valve timing will still be in the allowable range).
     
  11. Joe34

    Joe34 Active Member

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    Just when I put it to tdc the lobs do not evenly point away from each other. And when I rotate it so the timing marks are line up with cam and sprockets its alittle ways off the tdc mark.
     
  12. Joe34

    Joe34 Active Member

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    Crapp thing is I just gave a "mechanic" 75 bucks he tell me to put it together and start it and see if she works.
    Think is it rolls over good. But not everything lines up.
     
  13. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    post pics. Like I've said, the marks aren't going to line up perfectly.
     
  14. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The lobes are not the reference point. The timing marks are. The cam lobes will all be in different positions, by design.
     
  15. Joe34

    Joe34 Active Member

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    15070812361831146783571.jpg
     
  16. Joe34

    Joe34 Active Member

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    Ex is on with tdc. Think ill be fine to move intake on tooth
     
  17. Rooster53

    Rooster53 Well-Known Member Premium Member

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  18. Joe34

    Joe34 Active Member

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    Got it guys. Had to move one tooth on intake sprocket. Everything lineing up . maybe a fraction off. But barley
     
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  19. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    And that's as good as it needs to be, and as good as it will get unless you put in a new cam chain (and even then the marks won't necessarally be perfectly aligned).
     
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  20. Joe34

    Joe34 Active Member

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    Thank you everyone that helped. I really appreciate it.
     
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