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Reply to "Radiator Choices - Cooling System Info"

If your Pantera's coolant tanks are equipped with the original necks, the way I see it you have two choices. These have been the choices for decades. Keep in mind that the original pressure limit was 13 psi, because the radiator (and heater core) were assembled with solder joints.

(1) You can have the pressure tank's European radiator cap neck replaced by a radiator shop with an American pressure cap neck, and then use an American 13 psi cap (Stant 10329 which has the release lever).

(2) Leave the tank neck "as-is" and use a higher pressure 16 psi cap, which shall operate at a lower pressure (about 2 psi lower) when used with the European neck. I don't have the correct number, but I'll bet it is either 10330 or 10331 (both are 16 psi caps).

Keep in mind that in converting the recovery tank into a head tank that it will operate under a lower pressure, therefore 13 psi shall be serious overkill for its new application as a head tank. There is a good possibility that the standard American radiator cap (Stant 10329), which shall operate at about 11 psi when screwed onto a European neck, would be more than adequate for this job, so long as the cap is in good condition and seals against the radiator neck as it is supposed to do.

What this community of owners needs is for people who have already performed these experiments to chime-in and share their experiences.
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