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How to pressure test the cooling system?
- alsancle
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14 Jul 2023 12:42 #47421
by alsancle
Replied by alsancle on topic How to pressure test the cooling system?
Just to put a conclusion to my problem. I never figured out how to do the pressure test but surmised the problem was with the hose clamps and the hoses on top. When removing them it was apparent that two of them had been cut short and were barely covering material. I replaced them with longer hoses. Refilled the radiator with water and ran the engine.
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- Terry Cockerell
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02 Jun 2023 23:46 - 02 Jun 2023 23:53 #47285
by Terry Cockerell
T cockerell
Replied by Terry Cockerell on topic How to pressure test the cooling system?
George Van Nostrand has been having computer trouble and asked to post the attached picture. It shows a novel design of fitting a pressure cap low down on the vent tube. He fitted a 2 lbs pressure cap but it blew the original tanks.
As mentioned earlier my radiator has a pair of tanks made by George Ehresman with the cap also supplied by George Ehresman. I checked the cap pressure which is stamped on the top. It is 4 lbs.
As mentioned earlier my radiator has a pair of tanks made by George Ehresman with the cap also supplied by George Ehresman. I checked the cap pressure which is stamped on the top. It is 4 lbs.
T cockerell
Last edit: 02 Jun 2023 23:53 by Terry Cockerell. Reason: Problems with attaching picture
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- Pat Leahy
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02 Jun 2023 18:07 #47283
by Pat Leahy
Pat Leahy
Replied by Pat Leahy on topic How to pressure test the cooling system?
Here's what I use. It pressure tests as well as vacuum system to fill. Cost about $90.00 on Ebay. Has about every adapter known. Don't forget to plug overflow tube.
Pat Leahy
Pat Leahy
Pat Leahy
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- George van Nostrand
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02 Jun 2023 14:37 - 02 Jun 2023 14:44 #47281
by George van Nostrand
Restoring 1936 Cord Westchester sedan.2023 A
Replied by George van Nostrand on topic How to pressure test the cooling system?
Here is a method of pressurizing a Cord radiator .
Restoring 1936 Cord Westchester sedan.2023 A
Last edit: 02 Jun 2023 14:44 by George van Nostrand. Reason: Delete my posting
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- alsancle
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02 Jun 2023 12:44 #47279
by alsancle
Replied by alsancle on topic How to pressure test the cooling system?
Terry, I do have an 18V pump and that was my plan. But looking at the drain line and where it ends I have a new plan. I'm 90% sure the leak is in the upper radiator hoses, so I'm ordering some new ones and will probably run modern clamps with the originals in a box in the trunk.
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- Terry Cockerell
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01 Jun 2023 10:55 #47273
by Terry Cockerell
T cockerell
Replied by Terry Cockerell on topic How to pressure test the cooling system?
AJ my radiator tanks were made by George Ehresman and supplied with a modern type cap. I think from memory the pressure is 4 psi. I will check it tomorrow.
Pressure testing the oil pump pressure relief valve I used an 18 volt Makita tyre pump. It has a digital read out in 0.5 psi steps. You could easily use one of these to check the cooling system.
Pressure testing the oil pump pressure relief valve I used an 18 volt Makita tyre pump. It has a digital read out in 0.5 psi steps. You could easily use one of these to check the cooling system.
T cockerell
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- alsancle
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01 Jun 2023 10:13 #47272
by alsancle
Replied by alsancle on topic How to pressure test the cooling system?
Thanks guys. Will check out the overflow as a possible way to put a 1 or 2 psi in to the system. I know not to use compressed air.
A.J.
A.J.
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- 1748 S
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01 Jun 2023 00:18 #47269
by 1748 S
Replied by 1748 S on topic How to pressure test the cooling system?
All 810 or 812 cooling systems are zero pressure. To the drivers side of the top radiator tank is a piacular raised bump. Thats the tank overflow and it runs down the drivers side of the radiator to the ground. I was advised to not fill the radiator to the top neck. That way when coolant expands it wont run out this tube. Just run the top tank half full and it will be fine. I got this information from Jim O Brien as I recall.
Gary Parsons
Gary Parsons
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01 Jun 2023 00:14 #47268
by Rileypu29
Bill Kastanis
Replied by Rileypu29 on topic How to pressure test the cooling system?
You may be able to pressurize the system through the overflow tube. If you don’t pressurize it there you will have to block it off in order to hold pressure. Also my understanding is that these old cooling systems that were not designed to be pressurized should only be pressurized to a few psi at the most. The original cap may suffice to hold this low level of pressure well enough for you to find the leak.
Bill Kastanis
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- alsancle
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31 May 2023 22:47 #47267
by alsancle
How to pressure test the cooling system? was created by alsancle
Could anybody point me in the direction of an adaptor or an aftermarket cap I could drill that would allow me to pressure test the radiator on our 812? I have a coolant leak that sprayed anti-freeze everywhere. I believe it is the upper hoses but would like to confirm before I replace them.
I see relatively cheap test kits that come with lots of adaptors but not sure which if any will work.
I see relatively cheap test kits that come with lots of adaptors but not sure which if any will work.
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