1950 61 Series Sedan
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The Classic Cadillac Forum Discussion, 1950 61 Series Sedan in Past Cadillac Vehicle Discussion; Hello All. I have started a journey with my first classic car, in need of much TLC, a 1950 Cadillac ...
  1. #1
    fender1325 is offline Cadillac Owners Member
    Automobile(s): 1950 61 series sedan
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    1950 61 Series Sedan

    Hello All.

    I have started a journey with my first classic car, in need of much TLC, a 1950 Cadillac 61 series sedan. Many obstacles along the way, as to be expected. So far I've rebuilt the fuel pump, cleaned out the gas tank,
    replaced the rubber fuel hoses that connect to the tank from the filler neck, replaced the sending unit, replaced the water pump, replaced rad hoses, 2 heater hoses, had radiator acid washed out, rebuild carburetor, new
    spark plugs, rotor/cap, points, wires, condenser, coil. I think thats everything for now.

    I've flushed out the engine with the garden hose, and the radiator, several times now, but it still runs hot. I fear a head gasket might be bad. Tried undoing the bolts on the exhaust manifolds so I could remove the heads but those bolts are rusted on really good.

    Anyhow, here she is!

    https://www.youtube.com/watch?v=ghUoEP9fAtU
    CADforce69 likes this.

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  3. #2
    77CDV's Avatar
    77CDV is offline Cadillac Owners Master
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    Re: 1950 61 Series Sedan

    Don't often see a Series 61. Well done for saving another one!

  4. #3
    fender1325 is offline Cadillac Owners Member
    Automobile(s): 1950 61 series sedan
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    Re: 1950 61 Series Sedan

    Thanks! I traded my 98 mustang GT for it. I didnt know anything about which model it was at the time, I just knew it spoke to me. Now, my "dream" caddy would be a 54 series 62 but this will do to start the collection! Today I ended up cussing at it and packing up my wrenches. Haha. I think some days go like that in the world of restoring.
    77CDV likes this.

  5. #4
    talismandave's Avatar
    talismandave is offline Cadillac Owners Master
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    Re: 1950 61 Series Sedan

    That is a sweet design, I can easily see how it "spoke to you"!

    Welcome to the forum and looking forward to seeing more of your beauty!

  6. #5
    orconn's Avatar
    orconn is online now Cadillac Owners 10000+ Posts
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    Re: 1950 61 Series Sedan

    I remember the 1950 series 61 because there were several of them running around Sao Paulo Brazil in the mid fifties. The rear door windows were very distinctive.

    Thanks for posting the tape of your car, I also enjoyed the tape of the 1935 Packard V-12 that could be accessed from your tape. I still have a sweet spot for those old Packards.

  7. #6
    77CDV's Avatar
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    Re: 1950 61 Series Sedan

    Quote Originally Posted by fender1325 View Post
    Today I ended up cussing at it and packing up my wrenches. Haha. I think some days go like that in the world of restoring.
    Some days? That's SOP!
    talismandave likes this.

  8. #7
    fender1325 is offline Cadillac Owners Member
    Automobile(s): 1950 61 series sedan
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    Re: 1950 61 Series Sedan

    It still runs hot. My efforts so far only was to drain and flush out the rad/engine through the rad hoses, and remove the thermostat. When I drained the oil the other day there was water in it for the first second of draining, which led me to fear a head gasket leak. But, I should note that when I took off the carburetor to be rebuilt, the carb studs on the intake manifold wrecked off due to age. I had the intake off the car at a machine shop for a few weeks. I do think that rain gets in through the chrome trim on the the hood so I think it was possible what I saw in the oil was a little bit of rain water. The coolant, as many times as I've changed it shows rust in it. I think the channels in the engine must be gummed up with rust and junk. Water pump is new. Any ideas or thoughts?

  9. #8
    77CDV's Avatar
    77CDV is offline Cadillac Owners Master
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    Re: 1950 61 Series Sedan

    You could have a lot of rust in the radiator/engine/heater core, esp if the car has been sitting or has been negelcted. I suspect you have a blockage somewhere in the system that isn't allowing the coolant to circulate freely.

  10. #9
    fender1325 is offline Cadillac Owners Member
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    Re: 1950 61 Series Sedan

    I agree. What's the best way to tackle that?

  11. #10
    CaddyGas's Avatar
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    Re: 1950 61 Series Sedan

    When you changed your coolant, did you flush it? If you didn't, run water through the block and radiator for around 15 mins. Make sure to run water through your new pump and get the rust out and new hoses if you have them. If the rust is bad some run chemicals through.

    When you heat up the motor, that might loosen up the manifold bolts to loosen them, while the motor is still hot. Beautiful car by the way!

  12. #11
    fender1325 is offline Cadillac Owners Member
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    Re: 1950 61 Series Sedan

    Will do. Thanks!

  13. #12
    fender1325 is offline Cadillac Owners Member
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    Re: 1950 61 Series Sedan

    Got another short video

    77CDV and talismandave like this.

  14. #13
    CADforce69 is offline Cadillac Owners Connoisseur
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    Re: 1950 61 Series Sedan

    Quote Originally Posted by fender1325 View Post
    I agree. What's the best way to tackle that?
    There are especial products in the market for cleaning the cooling system of the car. Mix it with the coolant/water in the radiator and run the car for 1/2 hour. Then flush all the water in the radiator and use a hose to clean the inside of the rad. pull out the engine hoses and introduce pressure water into the block until water comes out clean. Maybe you have to repeat the process if you observe dirt again in the circuit. Thatīs frequent if the car maintenance have been long time neglected, specially if the car has had only water in the cooling system.

    You can also check temperature in the upper and the lower radiator panel at operating temperature and check if there is a significative difference. If so, there could be a blocking inside the radiator. You can borrow a laser thermometer for better precision.

    Your 1950 looks and sounds great Good luck with it.
    77CDV likes this.

  15. #14
    fender1325 is offline Cadillac Owners Member
    Automobile(s): 1950 61 series sedan
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    Re: 1950 61 Series Sedan

    Thanks. I bought some standard prestone coolant system flush. My only concern is if it would react bad with a copper rad. It says on the bottle to leave in for a few days if its really rusty, which it is.

    ----------

    Called prestone - they said its safe for copper radiators
    CADforce69 likes this.

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