Engine knock, need to swap new engine HELP!

Discussion in 'Gen 3 Prius Main Forum' started by Maple50175, Jul 25, 2021.

  1. Maple50175

    Maple50175 New Member

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    I have a 2010 prius. 230k or so and it has rod knock. Misfire on 1 and 4. I replaced the spark plugs, the coilpacks, I noticed on cylinder 1 has alot of oil sludge. I pulled the engine today and need to swap a new engine.

    These engines are going for 1200 plus even with 200K miles.

    I can get the 2012 engine for $500. Are these the same engine blocks? I can swap over all the parts from the other engine.
     
  2. Maple50175

    Maple50175 New Member

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    I also hear engine blocks from 2010-2017 are all the same. If you swap everything from the old engine to one of these it will work. Will this work? so basically a 2014 prius engine block and head are the same....
     
  3. rjparker

    rjparker Senior Member

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    The hatchbacks from 2016-up are gen 4 and require some mods. The 2015 blocks have improve pistons and rings, the heart of your issue, and would be the easiest "better" engine. If the donor engine was from a Prius v wagon, the 2015 improved gen 3 was used in 2015, 2016 and 2017.
     
    #3 rjparker, Jul 26, 2021
    Last edited: Jul 26, 2021
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  4. Mendel Leisk

    Mendel Leisk Sand Pounder

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    A gen 4 block would work too I think.

    BTW, assuming you haven't I would also clean the Exhaust Gas Recirculation circuit, AND the intake manifold (paying special attention to the EGR passages). And consider adding an oil catch can to the Positive Crankcase Ventilation circuit. More info in the "bad flywheel" link in my signature.
     
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  5. Maple50175

    Maple50175 New Member

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    Thanks for the replies! Engine is on the way and i'll have it weds.
     
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  6. seeker311

    seeker311 Junior Member

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    I just completed my 2nd gen 4 Engine to a gen3 body. Not too complicated. What year engine did you go with? The coil pack electrical connectors must all 4 be pointing towards the firewall to show it is the gen 4 engine. I have found the the 2zr will have both head types. As Mendal stated, clean egr cooler and get an oil catch can installed. Let us know if you need help.
     
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  7. seeker311

    seeker311 Junior Member

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  8. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Great video series!
     
  9. privilege

    privilege Active Member

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    ooof, my reading comprehension just got whipped by your comment !

    at first I thought you said you swapped a 2nd gen engine with 4 option package into a 3rd gen body.

    I need more coffee !
     
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  10. Mendel Leisk

    Mendel Leisk Sand Pounder

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    I went halfway down the same rabbit hole. :)
     
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