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M40 just rebuilt

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    M40 just rebuilt

    So I have a m40b16 and my mechanic did a awesome job replacing the camshaft after it broke and he put a bigger one in so I deffinatly feel the performance differnce but the idle makes the car shake should I keep it or change it back to oem

    #2
    Keep it!

    t
    now, sometimes I just mess with people. It's more entertaining that way. george graves

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      #3
      Sometimes the way a can opens and closes the valves and the overlap of such makes for a rough idle. More info on the cam would be necessary to say for sure of course, it could be a timing issue.

      That said, the M40 is a dog stock and a cam would be one of the best ways to wake it up.

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        #4
        I'm probably going to keep it but does it effect gas mileage also do m40's naturally tap like the m20 because I can hear the lightest lightest tap sometimes or maybe it's just the sound stuck in my head

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