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Canadian Poncho Homepage -> Canadian Poncho -> Beaumont Interior Tech Forum -> Heater core pressure test
Post Info TOPIC: Heater core pressure test
4SPEED427


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Heater core pressure test
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Does anyone know what pressure rad shops test heater cores at?

I have one out, and although it has a little bit of green around the pipes it holds 16-17 PSI for hours. I've tested it dry and tested it filled with water, same results. I adapted the pump and hose from my cooling system pressure tester to a T fitting with two hoses on it for the core tubes. 

Anyone who has tried to find a good replacement for a Beaumont heater core knows why it's so important to have a good original core. The replacements are small and don't fit right. 

20230119_151402[1].jpg20230119_151409[1].jpg

 



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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
DonSSDD


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I tested mine at 15lbs for the 63, not sure now where I got that number but it works fine. I usually over check for a spec like this.

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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
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DANO65


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As long as it holds more pressure than the rad cap, I think you are good.

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Prefectca


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If I recall the test pressure was always 3 psi higher than the radiator operating pressure. So a 15 psi system would be tested at 18 psi. This was for testing the radiator only, in a test tank. I would think your heater core is okay at the pressure shown in your picture.

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66 Beau


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I remember a neighbour pressure testing his heater core (in about 1976). Hooked it up direct to the garden hose. The core expanded like an accordion. Grew by about 4 inches.

The good news? It didn't leak....

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Bubbaz67


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anyone have any idea what the cost is to have 67 beaumont heater core repaired (recored)

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4SPEED427


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I had one repaired about 2 years ago (not recored, the new cores usually aren't the quality the original cores are) and I think it was a bit under $200.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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oshawacliff


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Did you reverse flush the core with a chemical?



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Cliff

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