65 Radiator Tank Seam Splits

[TopBanana]

I'm having an issue with my top tank seam splitting in my Coronet. This is the second radiator, and the fourth time it's happened. And I found another one on eBay same problem. Anybody else having this issue? Or know about this issue? I'm really confused as to why it's happening. I'm not using a universal radiator hose, everything is tight, nothing seems to be stressing the top hose port.

Thoughts?

Bill M

 

[coloradodave]

I'm having an issue with my top tank seam splitting in my Coronet. This is the second radiator, and the fourth time it's happened. And I found another one on eBay same problem. Anybody else having this issue? Or know about this issue? I'm really confused as to why it's happening. I'm not using a universal radiator hose, everything is tight, nothing seems to be stressing the top hose port.

Thoughts?

Bill M

Bill,
The radiator cap is designed to release pressure at 16 lbs. if it's working as intended. Pretty hard to split a seam if the cap is good. Have you tried a new cap or got the old one tested? Any parts store should have a Stant tester. Also, check that the overflow hose/tube is open and not clogged. Might be a good idea to take a compression test as well to rule out a bad head gasket pressurizing the cooling system.

 

[TopBanana]

The systems used a 13 lb cap. I just installed my 3rd new one. No head gasket leak issues either way. Engine is relatively new with ~6k on it and professionally assembled. Over flow is not clogged.

 

[Demonic]

My thought is: No one cares about the Mazda in your sig. Especially the guy who fixed your radiator. ;-)

 

[TopBanana]

Old sig, I'll change it when I get a chance. Get over it, and thanks for your expert on topic addition to this thread.

 

[coloradodave]

Just for information: My 63 FSM lists: 14 lb. cap for all engines W/O air,
16lb. for all engines with A/C
Not going to solve your problem, whatever it is...

 

[62 Dart Convertible]

I had my '62 radiator top tank off a while ago and it had 4 cracks in it. Silver soldered them up with shim patches on inside before soldering tank back on. Common problem on old brass.

 

[Torqueflite]

I think Dart is on to something about the old brass. Wish someone made an alum radiator that more closely resembled a factory one. I got tired of issues with my 65 A/C car and finally went the alum champion route.