Can a 1.5 prius C engine be installed into a 2006 prius

Discussion in 'Gen 2 Prius Accessories & Modifications' started by Grahams2, May 5, 2017.

  1. Dxta

    Dxta Senior Member

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    I'm not concerned about the head dimensions.
    The pistons are of same diameter. You can find that up online.
    Just google yaris/echo 1NZ 1.5L engine piston diameters, or you can check it out on alldata.
     
  2. 69shovlhed

    69shovlhed Surly tree hugger

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    you completely missed the point. I am curious about the compression ratio difference between the prius and yaris.
     
  3. DivideByZer0

    DivideByZer0 Member

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    To answer the original question about whether a Prius C 1NZ-FXE engine could be installed in a Gen 2 Prius, you'd probably have to see if any of the below changes are ECU controlled. The Prius C repair manual would probably give you the necessary information. My thought is that if these changes are simply mechanical changes to the engine without ECU control, you should be able to swap the engine without issue.

    According to this site:
    1NZ-FXE Toyota engine

    Not sure about emissions laws in Ontario, but in California swapping the header and cats for the "maniverter" would probably be a no-no. I have no idea if this maniverter would be a bolt-on to the Gen 2 exhaust system, though. Regardless, there should be no issue with hooking up your existing header to the engine.

    I'm actually very interested if any of these tweaks can be easily transplanted to the Gen 2 Prius. Mainly, the low-friction timing chain which should definitely be compatible as long as the rest of the parts are the same, the air guide through the radiator (there is a good chance I will need to replace my radiator due to messing up the coolant air bleed plug, it seals for now), and the water-cooled exhaust gas recirculation.

    But it seems that if you are going to be replacing your engine anyway, a Prius C engine could actually be an improvement, with or without this "maniverter"
     
    #23 DivideByZer0, May 2, 2019
    Last edited: May 2, 2019
  4. DivideByZer0

    DivideByZer0 Member

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    Looking more at the EGR valve (exhaust gas recirculation) it appears that it can generate codes and also has 6 wires going into it, indicating an external controller and not just receiving power, which would make sense that this sort of system isn't running "blind". My guess is that adding this system is probably a no-go without the ECU support.

    My thought is that the engine should have the same interfaces; if you leave off the maniverter and EGR system I think it would work with a swap. I'm not sure about A/C compressor drive compatibility or the electric water pump drive, I don't know much about those systems, but ECU compatibility could be a concern. I'll probably research this in more detail in the future.
     
    #24 DivideByZer0, May 2, 2019
    Last edited: May 2, 2019
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  5. SFO

    SFO Senior Member

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    Curious if the Yaris pistons had additional oil drainage holes or if they were a larger diameter, like the updated pistons for the gen3.
     
  6. NortTexSalv04Prius

    NortTexSalv04Prius Active Member

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    Not sure if the OP still has interest in "Can A 1.5 Prius C Engine " go into a Gen2 ?
    The Prius C built/manufacture started in 2012 besides engine shared displacement size of 1.5L shared with Gen2 2009 last made

    Differences in vehicles first glance

    Throttle body Prius C one 6 pin connection to wire harness/no vacuum line
    Throttle body Gen2 two connection 4pin /2 pin to wire harness/ vacuum line connection

    Air intake manifold plenum Prius C has different design and geometry than Gen2

    I believe air box is also different ...someone/anyone would need to do/take a deep dive into both vehicles to just identify/locate other different builds ...
     
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  7. Ivan G

    Ivan G New Member

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    I stumbled upon this thread. After reading it, I still wonder if this has been done.

    I have a 2006 that gas a noisy engine. Found a Prius c engine with low miles. Thinking about doing this swap.

    Again, has anyone attempted this yet?

    cheers.
    Ivan
     
  8. Ivan G

    Ivan G New Member

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    I purchased this engine from eBay for just under $100. What’s the catch? I do t know. I will go pick it up on Saturday. Supposedly the engine has 49k miles and comes from a car who was sideswiped.

    the seller has a 99% reputation and over 30k transactions on eBay.

    I’ll keep you posted.
     

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  9. PriusMechanic

    PriusMechanic Junior Member

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    Any update? At this point my family are all driving 3 gen Prius. I am the only one with an 2nd gen Prius and a CT200h. But I still would like to know if you can swap a Prius C engine with a 2nd gen engine.
     
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  10. fotomoto

    fotomoto Senior Member

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    Never hurts to ask but that member hasn't logged in since. I typically hold little hope for a reply from anyone who joins and posts on the same day and haven't participated since.

    GOOD LUCK!
     
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  11. Danny13pruisc3

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    interesting thread..
     
  12. Roccobro

    Roccobro Junior Member

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    Anyone?

    Or is there an updated/new thread? My search skills (really) lacking if so.

    Justin
     
  13. Mirage42

    Mirage42 New Member

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    Greetings to all.

    The Prius gen2 can be fitted with the Prius C engine.
    The new engine is quieter and has a stable oil level.
    What needs to be done:

    1. cut the intake manifold, the electric pump interferes with it. You can leave your own manifold, but you will have to connect a new damper, this is also possible, but you have to think about how to install an air filter.
    2. Take the injector nozzles from the old prius gen2 engine
    3. We dismantle the EGR system
    4. electric pump, you need to supply it with power + 12V, -12V. The two pins in the connector must be shorted to reduce the power, otherwise it will soon burn out.
    5. Drill some holes, there is room on the engine to better screw the transmission.
    6. Slightly bend the oil level dipstick tube.
    7. Bend the engine cooling pipe to the pump.

    p / s There are 1000 such installations in Russia, I can give more information, but it's difficult to translate.
     

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  14. Mirage42

    Mirage42 New Member

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    8. Remake the air conditioner compressor mount
     
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  15. Another

    Another Active Member

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    Seems like too much work
     
  16. Mirage42

    Mirage42 New Member

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    The hardest part is step 5. Everything else is the usual work of a mechanic.
     
  17. ChapmanF

    ChapmanF Senior Member

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    Maybe build a small electronic circuit to control the water pump speed according to a temperature sensor. The pump is controlled like this.

    [​IMG]

    "two pins in the connector must be shorted" doesn't sound like a great approach. If you tie WPO to +12 you get full speed; if you tie it to ⏚ you get minimum. (Maybe they changed the pump control for c? the linked thread's for Gen 3 liftback.)
     
  18. Mirage42

    Mirage42 New Member

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    Electronic circuitry is a challenge for many Prius owners.
    The pump control and the pump itself on C and gen 3 are the same.
    I don’t know how it works, but if you short-circuit the blue and green leads, we get 70% of the power, it’s easy to do.
    You can put a relay and when the prius gets hot, we get 100% of the pump power.
     

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  19. ChapmanF

    ChapmanF Senior Member

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    Ah, cute idea. Short WPO to WPI. WPI is the pump's tachometer output, so it's a 50% duty cycle pulse. A different frequency than the ECM produces but maybe the pump doesn't care. So as long as the pump starts turning at all, it is then giving itself a 50% duty 'control' signal.

    [​IMG]
     
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  20. SFO

    SFO Senior Member

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    Welcome to PriusChat, and thank you for posting!!
    Could you please link to the best version of this installation (we can attempt to crowd source the translation), and any additional pictures.

    As they say, a picture is worth a 1000 words.
    Is this something that you (or others in your country) would do on a gen3 to prevent the pump from burning out ?
    Are there any pictures for step 5 ?
     
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