Corolla Hybrid engine vs Gen 4 engine

Discussion in 'Gen 3 Prius Technical Discussion' started by Ryan.Boyd, Oct 7, 2022.

  1. Ryan.Boyd

    Ryan.Boyd New Member

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    Today I received my engine from a 2021 Toyota Corolla hybrid and am attempting to swap it into a Gen 3 Prius. This engine should be comparable to the Gen 4 Prius from my understanding and research. I have researched the differences, (Gen 4 vs Corolla hybrid) but have not been able to find a technical analysis on what exactly is different. Anyone know what the differences, if any, between the two engines are even though they are both 2zr fxe?
     
  2. Tombukt2

    Tombukt2 Senior Member

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    I saw a Corolla a few weeks ago with this type of setup It looked like the EGR system was a little different I didn't make a note of the year of the car It was a black thing with the front end almost like a 16 or 17 Prius but it didn't look like it would be too finicky I would want to thank almost everything would plug up except a few sensors or something but folks ought to be on the way in a minute with different.
     
  3. PriusCamper

    PriusCamper Senior Member

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    If I had to guess, there's probably something related to the fuel system that might be challenging... First step of course is comparing every plug and wire on each engine, as well as lots of measuring to decide if all the biggest challenges that could come up aren't there. But the real test will be chasing error codes once the new engine is installed. Is this the engine with the transmission, or just the engine?
     
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