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Thread: Help !!!! Hammering sound in my Engine M30!!

  1. #21
    Join Date
    Dec 2003
    Location
    baton rouge, loserana
    Posts
    6,922

    Default

    the m30 hex are not the problem that the m20s are, different bolts completely

    Quote Originally Posted by grave77
    I will also change the head screws to Trox instead of Hex type before summer time. Hex screws r a timed Bomb
    all america wants is cold beer warm cat and a place to take a poop with a door on it

  2. #22
    Join Date
    Dec 2003
    Posts
    1,640

    Default have you tried checking the valve clearance?

    Maybe one of the eccentrics was a bit loose and opened up some. That would give you a nice clatter in the top of the engine.

    I'd go around and check all my valve clearances before I did anything else.

    Jeff
    Bellevue WA
    90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
    86 Porsche 951 - Track Toy

  3. #23
    Join Date
    Aug 2004
    Location
    Dubai
    Posts
    834

    Default

    well ... that was the reason, the valve adj. on the rocker was lose I re-gapped the valves and started the engine ... it was all smooth. seems like at the high RPM the rotating adj. on the rocker turned to protect the valve from being bent. anyway ... its done now ... am happy that nothing much happend in the engine. ..................... thanks guys ur da best

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