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New Head Gasket!

Discussion in 'Gen 3 Prius Technical Discussion' started by RyanFlorida, Apr 30, 2018.

  1. douglasjre

    douglasjre Senior Member

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    When installing the engine did you replace the donut between the exhaust manifold and header pipe? What size is it? Is it Universal?D
     
  2. cnc97

    cnc97 Senior Member

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    I reused the flange gasket on mine. No leaks at the flange. The engine comes right out the top very nicely. Pulling the ICE on a Prius is no different then any other automotive engine. Don’t mess with the orange cables. As long as the 12v and service plug are pulled, there is no issue.

    Take your time and work slow.
     
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  3. douglasjre

    douglasjre Senior Member

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    It took me 16 hours to do a head gasket. Next time I have a prius that blows a gasket I'm just changing the motor
     
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  4. HeavyFooted3SGTE

    HeavyFooted3SGTE Junior Member

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    What do dealers charge to replace a head gasket? $800?
     
  5. cnc97

    cnc97 Senior Member

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    I think in another thread someone posted a dealers invoice for this job. 12.4 labor hours plus parts. Just the labor in my neck of the woods at a dealer is over 1k.
     
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  6. euroconic

    euroconic Junior Member

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    Had my gasket just changed at service. All works good now. 2zr 2015 Prius V 59000 miles.
     
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  7. Mendel Leisk

    Mendel Leisk Senior Member

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    How much? Free??
     
  8. hotelprisoner

    hotelprisoner Member

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    Doesn’t the 2015 have the updated pistons and rings that were supposed to prevent these problems or is the V different?


    iPhone ?
     
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    In model year 2015 the Prius v got both the pistons and rings updated. That said, I don't think that will prevent EGR clogging, and that seems to be one trigger for head gasket failure, maybe the main one. To prevent EGR clogging you basically need to clean it periodically. And an Oil Catch Can might reduce the clogging rate some.
     
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  10. hotelprisoner

    hotelprisoner Member

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    Ah yes. I think the rings/pistons were more for the oil consumption issue.


    iPhone ?
     
  11. Mendel Leisk

    Mendel Leisk Senior Member

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    With 4th gen, seems like they got the memo, with EGR cross-sectional area maybe doubled, and the intake downstream of the CAT. Third gen, well we improvise...
     
  12. euroconic

    euroconic Junior Member

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    Not free, car was not on warranty anymore.
    In my country it costed me 540$. 300$ for work and remaining are the spares including the chain of engine. Not sure that the location will suit you (Belarus). I bought the car from copart after damage in front, and car was actually marked with Run and Drive. After I received it and cleared all customs, we had all replaced and painted, assembled and tried to start - then realized smth wrong with engine. So buying from copart is not that safe under Run and Drive label.
     
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  13. Mendel Leisk

    Mendel Leisk Senior Member

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    Someone in States just bought a Copart Prius (2nd generation), for under a $1000 US: the engine seems ok, but the interior of the car terrible. The car was long used as a taxi for cats/dogs, and then sat, was home to rats/mice. They are getting there, but a lot of cleaning work.
     
  14. Tom Hu

    Tom Hu New Member

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    I'm putting a plan together to replace the head gasket on my 2012 Prius. For those that have done this job, did you use the Toyota OEM head gasket or aftermarket (e.g. Fel-Pro)? and did you replace the head bolts as well or reuse the old bolts? Thanks for the info.
     
  15. RyanFlorida

    RyanFlorida Member

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    Sorry, I must not have has this thread on subscribe!! Well, I still have the Prius and still drive it daily nearly 70 miles. Car still runs great and since the head gasket swap I have only been doing regular maintenance like oil and filters. It recently started acting a little funny but I'm sure its just spark plugs as they are going on 3 years and maybe close to 50K miles. The car currently has just about 230,000 miles on it!! I am getting about 43 MPG and haven't cleaned that EGR since the rebuild. Maybe I'll clean it out when I have the windshield wiper cowl off for the spark plugs.

    I saw one question in here on if I machined the head. Nope, I did not have it machined. I put a level across the head in several different directions and I could not see that the head was warped at all so I figured I would just put it back in and see what happens!

    Also, would I do it again? Hell yea. It was fun. I'm a software developer so I don't get out much I guess. I'm thinking the head gasket in my van might be gone too. So thats the next project
     
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  16. ASRDogman

    ASRDogman Senior Member

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    How many miles do you have on it now?


     
  17. RyanFlorida

    RyanFlorida Member

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    230,000 and running strong!
     
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  18. ASRDogman

    ASRDogman Senior Member

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    Okay, I meant since the head gasket replacement....
    I turned 196,000 today....
     
  19. douglasjre

    douglasjre Senior Member

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    I have 240k on mine. For some odd reason it stopped using excessive oil just prior to the HG job. I'd rather have a '15 motor but they're going for $1900 round here....I have another Prius of mine w 180k that'll need a motor soon. It but s copious oil. Maybe I'll trade it in for a '16
     
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  20. Trace

    Trace Junior Member

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    I used OEM gasket and non-oem new stretch bolts. Total jobs cost $100-150 in parts and took me 18 hours working very slowly and carefully. Have about 40K miles on the repair now (172K on the car).
     
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