1 lifter UP while pistons at Top Dead Center

Discussion in 'Engine, Fuel and Exhaust' started by fabrozor, Mar 31, 2010.

  1. fabrozor

    fabrozor Active Member

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    Hello,

    after hydrolic cam plate conversion, i'm reassembling the motor. The problem is i guess i followed what the manual said (about the cam Timing Lines facing each other) but i have a lifter UP (the front right) while the pistons are at Top Dead Center.
    Does that means something to you ?

    Thanks.
     
  2. Hoople

    Hoople Account Removed

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    "up" as in how much. A few thousands or 1/2". Is it the exhaust or intake valve.
     
  3. glider

    glider Veteran Member

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    One piston is at TDC and the other is on the exhaust stroke. Sounds like the front right cylinder is on the exhaust stroke.
     
  4. fabrozor

    fabrozor Active Member

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    I think i anderstand you're right because i checked again.
    I was puting DTC with both pistons at the top together.
    I tried again with one at his top, followed with the other at his top and i didn't read the same values.
    I must check again.
     
  5. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    Fabrozor,

    Remember that in each cylinder, you have a compression stroke AND an exhaust stroke. When I am setting my adjustable pushrods, I disconnect the battery, jack the rear wheel off the ground, put the tranny in 4th or 5th, take out the spark plugs, then watch the lifters on the cylinder I want to adjust. I rotate the rear wheel until I see the exhaust lifter rise, then fall and then the intake lifter rise then fall. At that point I go to the left side and watch the piston in the cylinder I want to adjust as I slowly rotate the rear wheel. When I see (or feel with a pencil) the piston move to the top of its stroke (TDC for THAT cylinder) then I am ready to adjust those two pushrods. After letting them bleed down for at least 15 min. and checking to make sure I can rotate them easily with thumb and fore-finger, I follow the same procedure as above for the other cylinder. Easy as that!

    TQ
     
  6. fabrozor

    fabrozor Active Member

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    1)
    do you really need to watch the lifters, knowing that when piston is up, the both valves of this cylinder are supposed to be closed ?

    2)
    I made the pushrod adjustment with brand new lifters.
    I finger tightened the pushrods untill it became hard, but still could rotate.
    Then i added 2.5 turns (screeming eagle pushrods).
    Few seconds later (did not wait 10 minutes), it could rotate again.
    I wonder if somethings is wrong.

    3)
    How do you do if you are not shure and if you want to restart the adjustment procedure from the begining ?
     
  7. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    Lifter configuration - Harley Davidson Community

    TQ
     
  8. fabrozor

    fabrozor Active Member

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    I made like you guys said. That seems to be ok now. Thank you !