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Thread: adjusting valves 0n big solid roller cams

  1. #1
    Senior Member MASTER BUILDER
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    adjusting valves 0n big solid roller cams

    I adjust my valves the EO_IC way with no problem. an engine builder friend, who has never set valves with engine in car at track says it is wrong way. he is still in the past with his ways. he puts each cylinder on














    my friend is an engine builder machine shop operator who says the right way to set valves(big solid roller cams) is doing each cylinder at exactly TDC and setting the two valves and moving to next in firing order and moving to next cylinder in firing order and doing same until all cylinders are adjusted. from what i gather this is completely wwrong and will only work with hydraulic cams and real small solid cams. I use the EO_IC method and it works great,
    , especially when you cant see the harmonic balancer to get TDC(not that you even need it)I was told that if you wanted to use the TDC way you get #1 on TDC(firing cycle) and adjust 4 valves (none of them even being #1, rotate 180 degrees, adjust 4 more, rotate 180 degrees more and do next 4 valves, and rotate another 180 and do last four valves, this way you are doing a full 720 degrees cycle interestingly enough , the number one intake and exhaust valve are not even being adjusted o; when #1 cylinder was at TDC. could one of you guys that really understand this stuff chime in and let me know if i am right, and why i am right, or if i am wrong, please explain the proper way to adjust the valves on big roller cams. thanks chevy art












    TDC

  2. #2
    Senior Member RACING JUNKIE
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    I do the EO IC thing...

    all that matters is that the lifter is on the base circle of the cam.

  3. #3
    Junior Member SHOW GUEST
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    THE BEST WAY I HAVE FOUND IS WHEN THE EXH IS GOING DOWN SET THE INT. WHEN INT IS COMING UP SET THE EXH. VERY EASY.

  4. #4
    Senior Member RACING JUNKIE
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    I do it this way; When the lifter corresponding to the valve I am adjusting, is on the base circle of the cam, I adjust that valve. I follow this procedure, whether the engine is in the car, or not.
    No matter where you go, there you are.
    **IN GOD WE TRUST**

  5. #5
    Senior Member RACING JUNKIE
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    Quote Originally Posted by mudracer35
    THE BEST WAY I HAVE FOUND IS WHEN THE EXH IS GOING DOWN SET THE INT. WHEN INT IS COMING UP SET THE EXH. VERY EASY.
    I do it this way also never had any issue
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  6. #6
    Member JUNIOR BUILDER
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    I beliieve you will find that cams w/ BIG overlap and wide seperation angles one or both of the lifters will not be on the base circle @ TDC, even if only off by a few thou. I'm sticking with EO/IC........it's not that hard. 8) JB

  7. #7
    Senior Member MASTER BUILDER
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    adjusting valves

    hey sc4405you explained it the way i thought it should be, but just was not sure. bottom line at TDC the #1 valve adjustment has already left the building(elvis talk) thanks for the info chevy art

  8. #8
    Senior Member MASTER BUILDER
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    valve adj

    I adj like Mudracer35 does. Later J. Smith 4621 racing

  9. Racing Junk


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