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  • #1

    rockers making noise

    I was wondering if anybody could tell me what the proper procedure for tightening down my rockers would be, they are making that annoying ticking sound. I helped my buddy do his on his 5.0L stang, but I know that chevy and FORD are FAR different. any help would be great.
    Thanks
    82 camaro x2:
    82 z28 w/ 305 (for now) 4 speed saginaw
    82 berrlinetta with 350 .060 over...3 speed auto

    The Z28 is back under the knife, after the transmission, now its the entire engine....will post pics when all finished.
    Tags: None
  • #2
    There are many schools of thought on this, but this has always worked for me on any hydraulic lifter'd chevy: Hold the pushrod in between your pointer finger and thumb. As you tighten the rocker, twist the pushrod back and forth constantly, and keep tightening until you cant twist the pushrod anymore. Back off the rocker 1/8 turn and VOILA!
    96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
    11.6 @ 123mph (1.6 60' - getting there )

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    • #3
      On a hydraulic roller lifter type motor the valve lash needs to always be zero or you will get rocker chatter. I don't believe there is set pin (can't remeber) on the stamped 1.5 factory rockers so all have to do is like n20lt4bird said but I would tighten the rocker 1/2 turn tighter instead of backing off 1/8 turn. Everyone has there own way of doing this but the main idea is to torque the adjustment nut just enough to maintain zero valve lash even after running the motor for a little while.

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      • #4
        on my chevelle I always did: tighten till zero lash and then tighten half a turn. it allways seamed to work. that was crane says to do also.
        Richard Harvey Jr.
        '94 T/A LT1 (stock) - SOLD

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        • #5
          The proper procedure if doing this by ear and no feeler gauge is to tighten as originally described, when the noise stops, tighten an additional 1/4 turn. No doubt 1/8 will work on the loose side, so will 1/2 on the tight side......

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          • #6
            You see....many schools of thought. The beauty of the hydraulic lifter is that you dont have to be EXACT. I guess our advice can be summed up as: Tighten it up until you releave the play in the pushrod.


            As a side note.......
            By the way, I say BACK it OFF 1/8 turn because I am so strong that by the time I cant turn the pushrod anymore its too tight If youre a girly man, you may want to apply another 1/8 - 1/2 turn after you cant turn the pushrod
            96 WS6 Formula: Ram Air, 383 Stroker, Ported LT4 Heads and Manifold, 1.6 Crane Rollers, 58MM T.B., AS&M Headers, Borla Exhaust, Meziere Elec. H2O Pump, Canton Deep Sump Oil Pan, 100 HP OF TNT N2O!! , T56 Conversion w/ Pro 5.0 shifter, SPEC Stage 3 Clutch, Hotchkiss Subframe Conn., Lakewood Adj. Panhard Bar, Spohn Adj. LCA's, BMR Adj. T.A., Custom 12 bolt w/ 3:73's, Moser Axles, Eaton Posi, Moser Girdle
            11.6 @ 123mph (1.6 60' - getting there )

            Comment

            • #7
              Dang man, I've always had to pull it back a half a turn. I usually hear the metal ing for mercy right about then.......


              96 TA Sold!
              87 TA Sold!
              80 Z28 Sold!
              74 Formula Sold!
              73 Z28 Sold!
              69 Camaro Not Sold!

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              • #8
                Originally posted by N20LT4Bird
                You see....many schools of thought. The beauty of the hydraulic lifter is that you dont have to be EXACT. I guess our advice can be summed up as: Tighten it up until you releave the play in the pushrod.


                As a side note.......
                By the way, I say BACK it OFF 1/8 turn because I am so strong that by the time I cant turn the pushrod anymore its too tight If youre a girly man, you may want to apply another 1/8 - 1/2 turn after you cant turn the pushrod
                Maybe your problem is that when you can't turn the pushrod, you are past zero lash. Zero lash is when you begin to feel drag on the pushrod.
                Rob B 95Z A4 Tech Page (Part numbers / locations, how to's, schematics, DTC's...) Home Page - shbox.com

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