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Engine swap question

Discussion in 'Gen 3 Prius Technical Discussion' started by cnc97, Jun 29, 2018.

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  1. cnc97

    cnc97 Senior Member

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    You can do as @Ragingfit did, and use the metal pipe to adapt the lower hose, and lengthen the one sensor harness. Or you can do as I did. Disassemble both the Gen 3 and 4 heads, and use the Gen 4 valves, springs, etc to rebuild the Gen 3 head. Six to 1, half a dozen to the other. Mine is very close to 10k miles and has not used a drop of oil or coolant. I’m very pleased with the result.
     
    #381 cnc97, Mar 28, 2019
    Robert Holt likes this.
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    #382 Mendel Leisk, Mar 28, 2019
    Robert Holt likes this.
  3. FnRedPrius

    FnRedPrius Active Member

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    I did ours about a month ago. Not really a big deal. @Ragingfit has a video series on Youtube under fix that Prius on the swap. @cnc97 led the way with the first one. I used a donor from a wrecked 2017 with 5,810 miles.
     
    #383 FnRedPrius, Mar 29, 2019
    RMB, Ragingfit, Mendel Leisk and 1 other person like this.
  4. Apatel1101

    Apatel1101 Member

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    @Randycoureton i used a 1-1/4 coolant line from advance auto because i couldnt find metal pipe in that size. And i used this adapter for the two hoses to connect.
     

    Attached Files:

    #384 Apatel1101, Mar 29, 2019
    Robert Holt and Ragingfit like this.
  5. cnc97

    cnc97 Senior Member

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    2010 Prius
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    Three
    This was today’s excursion to check the underside of the throttle body. I did drive 2500-2800 miles after install before I put the catch can back on. Just a light oily film that wiped clean with a single shop towel. Still no oil usage and no coolant loss.
     

    Attached Files:

    #385 cnc97, Apr 21, 2019
    Robert Holt, RMB, Raytheeagle and 2 others like this.
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