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**The Daring Dufas[_3_]** · April 23rd 13, 03:08 AM posted to rec.autos.misc,alt.home.repair

On 4/22/2013 8:51 PM, wrote:
> 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.
>

My 1965 Dodge Dart used a 13psi radiator cap on the good old Slant Six
radiator, at least that's what the part look up states. o_O

TDD