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Change timing chain guides on engine swap? 4.0 SOHC

Discussion in 'Stock 2002 - 2005 Explorers' started by andykwells, July 13, 2019.

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  1. andykwells

    andykwells New Member

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    I'm getting ready to do an engine swap, from a 2003 Explorer 4.0 SOHC, into a 2003. The new engine has 135,000 miles. It has no noises, rattles, etc. Should I re-do the timing chain guides before it goes in? Thanks, as always.
     
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  3. Number4

    Number4 "I'm counting to 3, then I'm getting your dad." Elite Explorer

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    Yes
     
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  4. Tshaw88

    Tshaw88 New Member

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    I would. Just did a swap like that, put an 03 4.0 with 90k into my 05, when swapping valve covers found both engines had broken rear timing guides even the one with 90k miles.
     
  5. donalds

    donalds Elite Explorer

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    Yes don't cheep out on this one
     
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  6. CDW6212R

    CDW6212R Hauls the mail. Elite Explorer

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    Yes definitely. Most of the labor is actually getting access to the parts. With the engine out, all of the removal labor is done. You just have to pull the valve covers and timing cover, and you're at all of the timing chain components.

    The process of learning how the timing tools work is a little slow, but you can get it done in a couple of hours. Go slow and carefully, have the right best parts and tools, and it should be no big deal.
     

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