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Swapping in a Gen 4 Prius' 2ZR Engine into the Prius v

Discussion in 'Prius v Accessories and Modifications' started by Tideland Prius, Sep 28, 2018.

  1. rjparker

    rjparker Tu Humilde Sirviente

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    Besides being clear you should consider answering the diagnostic questions people ask you.

    "See if the radiator fans come on with the ac. They should." If my radiator fans did not come on, the engine would be as hot as yours.

    Finally, if your gen4 engine has an electric water pump, it came from a Prius.
     
    #741 rjparker, Mar 11, 2021
    Last edited: Mar 11, 2021
  2. waheed Habib

    waheed Habib New Member

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    I like 4 generation cause i don't have to remove axles .
     
  3. johnnychimpo

    johnnychimpo Active Member

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    Pontiac really?
     
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  4. johnnychimpo

    johnnychimpo Active Member

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    Got it thanks for the tip I am at work I will try at lunch.
     
  5. johnnychimpo

    johnnychimpo Active Member

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    How so?
     
  6. johnnychimpo

    johnnychimpo Active Member

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    So drove it around and it stayed between 195 and 203 the fans do kick on when you turn on the AC so they are working it is still odd to me that although the temperature is within normal range the lower radiator hose is still cold maybe it's just not hot enough I don't know but the car is operating normally.
     
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  7. rjparker

    rjparker Tu Humilde Sirviente

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    195F - 203F is good. Can't say I have ever felt the lower radiator hose when the engine has been running but a radiator's job is to remove heat from the coolant.
     
  8. Mendel Leisk

    Mendel Leisk Senior Member

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    I’ve asked this before, and promptly forgotten. :oops: Anyways, is this right:

    Lower rad hose runs from pump (and thermostat), to the rad, and will be more-or-less cold until thermostat opens and pump is working?
     
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  9. ChapmanF

    ChapmanF Senior Member

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    It's right, except if you're tagging along with the coolant, to you it runs from the bottom of the rad to the thermostat and pump.
     
  10. johnnychimpo

    johnnychimpo Active Member

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    I think I can call this a successfull Swap. That being said here is a casualty. What is this? Should I replace it or just Cover it. Looks like a grease fitting. on the trans. IMG_20210311_125738.jpg
     
  11. Ragingfit

    Ragingfit Active Member

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    I get upper and lower mixed up on a Prius. ChapmanF is right, and so are you Mendel. The lower hose brings coolant from the radiator when the thermostat opens. If it's closed, it stays cold. The coolant line from the EGR cooler bypasses the thermostat and is always open and should get hot fast. This hot coolant should open the stat as long as there's not a big air bubble hiding behind the stat insulating it.
    - Fix That Prius !!!
     
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  12. Ragingfit

    Ragingfit Active Member

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    I believe it's a vent for the trans. Mendel?
    It's not a grease fitting.
    - Fix That Prius !!!
     
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  13. Mendel Leisk

    Mendel Leisk Senior Member

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    Yeah that’s my recollection.
     
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  14. johnnychimpo

    johnnychimpo Active Member

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    well the tip broke off just leave it alone?
     
  15. johnnychimpo

    johnnychimpo Active Member

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    Drove the car last night for 150 miles it went well. no codes or funny noises. I will clean things up and put under cover back on and call it good. Of note while I had the engine out I inspected the damper and noticed these little peg looking things inside of the springs does any one know what im talking about and what their purpose is? One more thing is there any benefit to using the old intake? I under stand you can use it with some slight changes. If so can anyone point me in the right direction.
     
  16. johnnychimpo

    johnnychimpo Active Member

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    is it possible to use the Gen 4 intake? Im using the gen3 exhaust and egr but would like to use the gen 4 intake
     
  17. johnnychimpo

    johnnychimpo Active Member

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    My Saga continues. the cooling issue is resolved. but now that dreaded misfire on #4 is back. I took it to the mechanic and he says there are no codes and the car is not misfiring. he suggests cleaning EGR. I moved coils sparks and put in new fuel injectors. The problem stayed on four. I will clean the EGR and intake again just to make sure. Anyone have any other suggestions?
     
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  18. Mendel Leisk

    Mendel Leisk Senior Member

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    Tough one, everything considered. Hate to say it, but revisit the head gasket?? That’s like open-heart surgery round two though. :(
     
  19. johnnychimpo

    johnnychimpo Active Member

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    the symptoms are mild barely noticeable but odb reader says misfire and I can feel it. Plus this is a new engine only 10k miles on it.
     
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  20. Mendel Leisk

    Mendel Leisk Senior Member

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    Ah, a total engine transplant, and 4th gen, forgot. :oops: