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  1. #1

    Help with 4-tec Rebuild 2007 RXT

    Rebuilding a 2007 RXT motor. Bottom end is beyond repair. I have been offered a complete bottom end from a 2005 RXP with only 55hrs of use. Will this unit fit the cylinder head of the 2007 motor.
    I seen a post on here inrelation to the interchangable parts on the diff year 4-tec motors. Cannot seem to find it now though

    Thanks in advance


  2. #2
    tweeker's Avatar
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    Quote Originally Posted by steelroe View Post
    Rebuilding a 2007 RXT motor. Bottom end is beyond repair. I have been offered a complete bottom end from a 2005 RXP with only 55hrs of use. Will this unit fit the cylinder head of the 2007 motor.
    I seen a post on here inrelation to the interchangable parts on the diff year 4-tec motors. Cannot seem to find it now though

    Thanks in advance
    you need a 2006 or newer bottom end(crankshaft)the timing of the pickup is different on 04-05,

  3. #3
    Cheers for the reply
    If I fit a 2007 crank to the 2005 block will it work.

  4. #4
    dsteinmann's Avatar
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    Quote Originally Posted by steelroe View Post
    Cheers for the reply
    If I fit a 2007 crank to the 2005 block will it work.
    Yes you need to drill a 1/2 in hole in the counter balance cavity on the PTO end like your 07 Block and pull the check Valve out of the 05 Block that goes to the head. You Can even use the crank With a little modification.

  5. #5
    what would I have to do to the 05 crank to make it work. abviously move the keyway I guess!!!

  6. #6

  7. #7
    Boost addict hotbird's Avatar
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    http://www.greenhulk.net/forums/showthread.php?t=147773

    Read post #1 and look at the pictures, it shows the difference.

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