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346 ci caddie machine shop

Discussion in 'The Hokey Ass Message Board' started by Sepai Steven, Dec 7, 2021.

  1. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

    Hi guys. I'm new and this is my first post. I'm located in northern CA. And I'm looking for a machine shop with experience on flathead Cadillac. I have a 46 series 62 with a matching number 346 that is seized. I can't separate the hydromatic without dropping the crank. I'm hoping to find a good shop to go through this motor. I'm 45 minutes east of the bay area and about the same distance south of Sacramento. Thanks in advance for your suggestions.
     
  2. Welcome to the HAMB from Illinois.
     
    Sepai Steven likes this.
  3. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

  4. oldiron 440
    Joined: Dec 12, 2018
    Posts: 3,301

    oldiron 440
    Member

    Welcome
    I don't have a recommendation for you but I would say there are fewer machine shops around even fewer that do good work. Hopefully you will find a good performance engine builder...
     
    Sepai Steven likes this.

  5. connielu
    Joined: Apr 21, 2019
    Posts: 180

    connielu
    Member
    1. A-D Truckers

    Welcome to the H.A.M.B.
    Where in Nor Cal?. Lodi/Galt? Try Bell and Gaines in Modesto.
     
    Sepai Steven likes this.
  6. 51504bat
    Joined: May 22, 2010
    Posts: 4,755

    51504bat
    ALLIANCE MEMBER

    Maybe @mctim64 in the central valley?
     
    Sepai Steven, fauj and jimmy six like this.
  7. choptop40
    Joined: Dec 23, 2009
    Posts: 5,114

    choptop40
    Member

    you will have to loosin up that motor to separate the bellhousing.......if not source a bellhousing because you will have to sacrifice yours...ie torch it off to get to the flywheel bolts......
     
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  8. choptop40
    Joined: Dec 23, 2009
    Posts: 5,114

    choptop40
    Member

    any updates on your progress ??
     
  9. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

    I'm in tracy
     
    Hudson31 likes this.
  10. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

     
  11. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

    I can't get the crank to turn. I may take it up north to Chico ca to see if they can get it done
     
  12. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

    I've just bolted everything back together and looking for a machine shop to deliver with it.
     
  13. connielu
    Joined: Apr 21, 2019
    Posts: 180

    connielu
    Member
    1. A-D Truckers

    Good luck! I hope it all works out, let us know what progress you make.
     
    Sepai Steven likes this.
  14. nochop
    Joined: Nov 13, 2005
    Posts: 3,818

    nochop
    Member
    from norcal

    Welcome, from over the hill from you
     
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  15. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,264

    gimpyshotrods
    ALLIANCE MEMBER

    Star Machine, Doyle Street, Emeryville, CA
    (510) 547-1171
    Shawn O'Connell

    He has built every single engine that I used in a customer car, and every single engine that is in one of my personal custom cars. He knows his old school stuff, and doesn't bat an eyelash when I bring him something off-the-wall weird.
     
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  16. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

     
  17. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

    Right in my backyard..I was born in San Leandro. Thanks
     
  18. Why can't you separate the Hydro withput dropping the crank?

    Get a manual or ask how to remove the transmission before you do something dumb.
     
    warhorseracing likes this.
  19. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,264

    gimpyshotrods
    ALLIANCE MEMBER

    He cannot turn the crank.
     
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  20. ekimneirbo
    Joined: Apr 29, 2017
    Posts: 4,217

    ekimneirbo

    You mentioned that you can't get the crank to turn. Generally that probably going to mean rust in the cylinders. Time is money when an engine is in a shop. They are going to probably have to do some pounding and hand work to get things unseized. I would buy some citric acid powder off Amazon and mix it with some water. It will not hurt your block as its too mild for that. Put the engine in a tub or cut off a 55 gallon plastic barrel and submerge the engine in it and just let it sit for several weeks. Be sure to get the oil out of it first and maybe the oil pan off. Then you have a tank for soaking other rusty parts. When you are done with it, simply dump it out as it doesn't harm the environment. The key is to let it soak till it loosens up. It will also help remove rust out of the bolt holes for the heads. $10 for a used plastic drum and $25 for some citric acid. Probably cheaper than what the machine shop will cost, and you may be able to save the pistons when it loosens up. Will also get rust out of the water jacket.

    DSCN2694.JPG
    472 Rust 1x.JPG
    472 Rust 4x.JPG
    After Citric Soak.JPG
     
  21. alanp561
    Joined: Oct 1, 2017
    Posts: 4,612

    alanp561
    ALLIANCE MEMBER

    Welcome from beautiful downtown Cleveland, TN.
    There's a 1946 Motors Manual on Ebay right now for $19.99 plus shipping
     
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  22. Budget36
    Joined: Nov 29, 2014
    Posts: 13,174

    Budget36
    Member

    Can you pull the heads and take a look? Also if you can get it in the air and properly supported, pull the pan? Best to see what you have before spending money at a shop.
     
    46international likes this.
  23. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,264

    gimpyshotrods
    ALLIANCE MEMBER

    Pull the heads and pour in enough Liquid Wrench to cover the piston tops.

    Let it sit for a few days

    Un-do the rod caps, and try to tap the pistons up the bored from underneath. Knock out the rod bolts if it will get you extra clearance.

    If you can get the uncapped rods up and out of the way, the crank will turn (unless something else is really wrong).
     
    warhorseracing likes this.
  24. @mctim64 at Hanford auto is your man
     
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  25. D'Oh!!!

    upload_2021-12-24_17-24-25.jpeg

    never thought of that.
    OK disreguard my last statement.
     
  26. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

    Your not
    The pan is off. Two headbolts snapped while taking them out so I stopped. I'm not sure the machine shop has a better solution but I figured I would stop and seek advice. Before snapping off a bunch of headbolts.
     
  27. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

    I've had marvel oil and pb blast in those cylinders for years. It still won't budge. I would remove the heads but the bolts snap and I'm unsure if the machine shop has a better way or they will just snap them also and deal with it later.
     
  28. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

     
  29. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,264

    gimpyshotrods
    ALLIANCE MEMBER

    That is not a good sign. Have you looked in the bores with a scope?
     
    kidcampbell71 and warhorseracing like this.
  30. Sepai Steven
    Joined: Dec 7, 2021
    Posts: 19

    Sepai Steven

    Getting that motor in a drum with the hydromatic attached may be challenging. Thanks for your input
     

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