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  1. M

    4.0 splined camshaft separation

    bolt was left hand thread, torqued to 45ftlbs + 90 degrees, and yes the chain was lined up in the guide
  2. M

    4.0 splined camshaft separation

    no, no splines, keyways or alignment pins
  3. M

    4.0 splined camshaft separation

    they were marked left and right on the cassettes but they are aftermarket cassettes, and i dont have any problems with the left bank.
  4. M

    4.0 splined camshaft separation

    45 ftlbs and 90 degrees
  5. M

    4.0 splined camshaft separation

    It was brand new from ford, lasted about 1 minute of run time
  6. M

    4.0 splined camshaft separation

    I rebuilt the engine as a reman was not available at the time, I did put a high pressure oil pump in, but I don't know why the camshaft separated like this, and it looks like the slippage was in the splines and not caused by low oil pressure
  7. M

    4.0 splined camshaft separation

    I have a 06 explorer that I have had the camshaft separate twice and allow the cam timing to slip and bend valves. I have never seen a splined camshaft before, even bought a new one from Ford and it also separated, not sure if I the oi pressure it too high and the tensioner puts too much...
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