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Shopping For Our First Gen 3, tips appreciated

Discussion in 'Gen 3 Prius Main Forum' started by ThebigK, Feb 1, 2019.

  1. Mendel Leisk

    Mendel Leisk Senior Member

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    2010 Prius
    Model:
    Touring
    From what's been reported here more recently, regarding the revised oil ring being wider, I think now it's very likely the pistons and rings were revised at the same time, some time through 2014 model year.
     
    ASRDogman likes this.
  2. dig4dirt

    dig4dirt MoonGlow

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    During a cold start and warm up, the timing is a little off on purpose, so generally you hear "tapping"
    I and others would consider it normal, BUT without us knowing the sound you are experiencing, cant say if it is truly normal.

    Just make sure to keep an eye on your oil level with the dipstick.
    Warning...there is no "low oil level/pressure" light on the dash.
    The time the Prius lets you know about your oil situation, it may be too late.
    Not trying to scare, just trying to nudge you to check the dipstick every fill up or whathaveyou.

    about the occ results, I dont have xp in that division, but I would assume it is rank with all the exhaust etc lol.
     
    jerrymildred likes this.
  3. MelonPrius

    MelonPrius Senior Member

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    My '14 was produced in March. That means I have newly improved rings and pistons... or neither?
     
  4. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
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    Touring
    Near impossible to tell, and to what end?

    On this Toyota parts site, model year 2014 shows both old/new pistons/rings:


    CRANKSHAFT & PISTON. 2014 Toyota Prius Three HYBRID | Toyota


    But no indication about production months. And no clarification, ie: which goes with which. From what I've heard hear, I don't think you can mix and match, it has to be old pistons and old rings, or new pistons with new rings.

    I woudn't sweat it.
     
    #24 Mendel Leisk, Feb 10, 2020
    Last edited: Feb 10, 2020