do you have or add a coolant expansion tank?

Early C Bodies - The Slab Side Years

  1. mathiew

    mathiew New Member

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    I just wondering if it's a good idea to add an expansion chamber or coolant catch can to my stock radiator?
     
  2. 78Brougham

    78Brougham Senior Member FCBO Gold Member

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    I did on my 67 Imperial. Just rerouted the hose to an inconspicuous plastic bottle near the battery. I found that after a jaunt at 70 mph and a quick shutdown, she would piddle just a tad. Not much, but embarrassing non the less.
     
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  3. 300rag

    300rag Old Man with a Hat FCBO Gold Member

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    I installed one in my 65. I used an overflow container from an early 80's D100.

    upload_2017-12-5_18-18-18.jpeg

    underhood 005.jpg
     
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  4. polara71

    polara71 Old Man with a Hat

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    The original owner of my 70 installed one many many years ago. It works great
     
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  5. Davea Lux

    Davea Lux Senior Member FCBO Gold Member

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    If your coolant level is correct and everything is working as it should, you probably are not going to lose much coolant. This is the kind of addition that certainly won't hurt anything unless of course you are building a show car, in that case leave it stock.

    Dave
     
  6. CBODY67

    CBODY67 Senior Member

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    The coolant recovery systems are allegedly supposed to have a "special cap" for the radiator, one that'll allow coolant to be drawn back into the radiator as it cools. But I think most now have been changed to that design.

    Many drag racing rules require some sort of "catch can" to catch coolant overflows, so they won't get onto the racing surface. Not sure if a coolant recovery system might work for that, but has to be better than some of the catch cans I've seen on sale.

    Try to keep the radiator-to-tank hose elevation such that air bubbled won't be in a "high spot".

    CBODY67
     
  7. Big_John

    Big_John Old Man with a Hat FCBO Gold Member

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    I like my car to mark its territory.
     
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  8. Yatzee

    Yatzee Active Member

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    Conventional coolant expands 5 to 6% when hot. If you don't have an expansion tank the first thing you notice is that the coolant level in the top tank of the rad is slightly down when cold. Not so with an expansion tank. The truth is, any air in or about a cooling system is not good.
     
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  9. traintech55

    traintech55 Senior Member FCBO Gold Member

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    Here is one to thinks about, antifreeze is highly poisonous to cats, and dogs. They just love the sweet smell of the stuff.
     
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  10. CanCritter

    CanCritter Senior Member

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    good addition.....would add
     
  11. jct

    jct Senior Member

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    How bout some pics on where you put your catch cans at? I tried to put one in my 68 newport but i haven't found a spot yet
     
  12. 300rag

    300rag Old Man with a Hat FCBO Gold Member

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    If you don't have AC, the spot next to the horns works well

    underhood-005-jpg.jpg
     
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  13. MarPar

    MarPar Senior Member FCBO Gold Member

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    my GTX...old Mobil1 oil bottle (thoroughly rinsed out of course :rolleyes:)

    DSC03767.JPG
     
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  14. Dobalovr

    Dobalovr Senior Member FCBO Gold Member

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  15. Snotty

    Snotty Senior Member FCBO Gold Member

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    You are correct, and yes they will.
     
  16. MrMoparCHP

    MrMoparCHP Senior Member

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    My CHP car has a Cadillac bottle on it, the CHP added them as needed. It was mounted behind the headlight, tight fit but it is there.


    Alan

    2016-05-08_006.jpg
     
  17. Samplingman

    Samplingman Senior Member

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    Anything will do. Here is the farm boy fix:

    BAF900A7-071B-406C-A64D-BD1C6F672C92.jpeg

    I plan on using the one from my ‘73 New Yorker.

    60294C44-6C1F-48A8-AF38-CF30E9F6BF74.jpeg 6F43F79D-4641-4CCA-B098-548368C4230F.jpeg
     
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  18. 78Brougham

    78Brougham Senior Member FCBO Gold Member

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    Sorry mines tucked away for the winter, all snugly
     
  19. polara71

    polara71 Old Man with a Hat

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    There is mine. It has been there since the car was almost new




    187134 2013 engine.JPG
     
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  20. 78Brougham

    78Brougham Senior Member FCBO Gold Member

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    Your car is almost new...from what I've seen:thumbsup:
     
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