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trouble tightening the rockers

Discussion in 'The Garage' started by shupach, Feb 20, 2003.

  1. shupach

    shupach 1/2 ton status

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    i was following the chart i have and did 1/2 turn past zero lash but when the valve goes down, the rockers are really loose, should i tighten em down some more or is there a torque rating they should be at? i went ahead and tightened some down cause they were way too loose.

    thanks,

    phill
     
  2. K5Dan

    K5Dan 1/2 ton status

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    what chart did you follow?
     
  3. shupach

    shupach 1/2 ton status

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    i have one in this book that details a rebuild for a SBC, basically it was like TDC piston 8 exhaust, 45 degrees the next piston etc

    could it be due the fact my cam has more lift than usual?
    (.480/.498)
    phill
     
  4. K5Dan

    K5Dan 1/2 ton status

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    did you put a new cam in or something
     
  5. MJB774X

    MJB774X 1/2 ton status

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    I always go one full turn pass zero, remember the distance between the threads on the stud is very short a full turn pass zero still leaves the plunger towards the top of the lifter and ensures no clacking, off subject but last rockers I saw adjusted by a friend, not myself, the studs started to pull out of the head,I've never seen that before,then when he pulled out the stud and started tapping it for screw ins the tap broke off, he ended up throwing the heads away /forums/images/graemlins/crazy.gif
     
  6. shupach

    shupach 1/2 ton status

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    ya comp cams 4x4 cam .480/.498 lift around 270/278 duration

    phill
     
  7. K5Dan

    K5Dan 1/2 ton status

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    ok then sounds like your ok keep going till there tight start it and see what you got
     

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