On Mon, 22 Apr 2013 19:40:05 -0400, "David L. Martel"
> wrote:

>Ashton,
>
>
>> No, the car is not overheating. It's never overheated. What happened
>> is that I installed an AC unit in this 60 Dodge. That has made it run
>> about 10 degrees hotter then it used to, mainly from just having the
>> condenser there in front of the radiator. So I was thinking about
>> whether it would be a good idea to go to a 13 pound cap instead of the
>> 7 pound one on it.
>
> I don't follow this. Your radiator is running about 10 deg. F (?) hotter
>with the AC, so what? Why is that a problem? You aren't anywhere near the
>boiling point of your coolant, are you? Assuming you have a 50:50 mixture
>and 7 psi your boiling point is about 255 deg. Changing to a 13 psi cap
>would improve things by raising the boiling point to about 270 deg.
> Unless you are getting close to 250 I don't understand why you want to do
>this. Be sure to check my math. These figures are quick guesstimates.
> Sorry, sounds like a waste of money. Keep an eye on the temp gauge this
>Summer though till you're sure.
>
>Dave M.
>
13 psi on a '60 mopar pretty well guarantees you will have some
expensive cooling system repairs in your future. If you are worried,
which you should not be, put on an electric fan in front of the
rad/condensor.