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Engine to Transmission Bolts

Discussion in 'Gen 3 Prius Technical Discussion' started by nyej01, Nov 10, 2024 at 2:05 PM.

  1. nyej01

    nyej01 Junior Member

    Joined:
    Oct 31, 2020
    2
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    Location:
    Ohio
    Vehicle:
    2011 Prius
    Model:
    Three
    First off, this place is an insane reservoir of information for which I am eternally grateful. Second off, I decided after much troubleshooting to replace the transmission damper and I have run into a few brick walls. First off, I snapped two Engine to Transmission bolts. They just snapped as soon as I tossed the impact on them. Any quick ideas on clearing out the snapped bolts or just standard elbow grease, heat or drill them out? Next, I cannot find a part number at all for these bolts and all I find are transmission mount bolts or engine mounting bolts. Any chance someone could throw me a clue or a good lookup for the part number for these guys or am I better off just hitting the hardware store or parts store?

    Thanks,
    Justin
     
  2. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
    10,361
    1,790
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    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    So the heads just snapped off the bolts or do you have part of the bolt shank attached to the head If that's the case when you pull the transmission back you should have essentially somewhat of a stud sticking out maybe you'll be able to spray some penetrant like croil let it do its job and soak in well and maybe you'll be able to back them out with a good set of knipex pliers or something. If it broke off flush with the back of the engine then you'll be it peaning or center punching and drilling grab a set of left hand drill bits always helps with this kind of stuff at least you're turning in the right direction to be loosening the piece or removing the piece so that's kind of a plus If not you can just drill it with right hand drill bits and start small and work up and then chase the threads out and new bolts shouldn't really be an issue You have one or two that aren't broke so you should be able to match them up or drop by a Pick-A-Part and grab a few from another car with somebody's dropped the transmission or done whatever and just left the bolts on the ground pretty common it a lot of those Pick-A-Part places and I would imagine all gas car like a Yaris or a Scion x series car the bolts will be the same The car just won't have hybrid system bell housing from the transmission is the same again so you can find those bolts pretty easy I have no idea what the specs are but in the morning I think I have one or two laying out here.