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Peyton · 09-01-2013, 08:29 PM

In a few months, I suppose postings such as will be rare but today a 70 mile drive to/ from Jacksonville Beach in 92 degree heat made me think of this often during the drive.

Les Andrews states on Page 4-40 of his "Model A Ford, Troubleshooting and Diagnositics", that the "Model A cooling system is designed to operate at a constant temperature of about 180 degrees F at the water outlet above the cylinder head".

My concern is whether the cooling system is able to operate at a constant 180 degrees when it is 90 plus degrees outside. With or without a 160 degree thermostat, my REX-A-CO temperature guage reads between 185 and 195 degrees when it is over 85 here in Jacksonville. I've vinegared the radiator and flushed it to the point where you can drink the water coming out the petcock.

The REX-A-CO danger zone of 190 to 250 doesn't help much either---what's a guy to do!

09-01-2013, 08:29 PM	#1
Peyton Senior Member Join Date: May 2010 Location: Jacksonville Fl Posts: 151	summer heat In a few months, I suppose postings such as will be rare but today a 70 mile drive to/ from Jacksonville Beach in 92 degree heat made me think of this often during the drive. Les Andrews states on Page 4-40 of his "Model A Ford, Troubleshooting and Diagnositics", that the "Model A cooling system is designed to operate at a constant temperature of about 180 degrees F at the water outlet above the cylinder head". My concern is whether the cooling system is able to operate at a constant 180 degrees when it is 90 plus degrees outside. With or without a 160 degree thermostat, my REX-A-CO temperature guage reads between 185 and 195 degrees when it is over 85 here in Jacksonville. I've vinegared the radiator and flushed it to the point where you can drink the water coming out the petcock. The REX-A-CO danger zone of 190 to 250 doesn't help much either---what's a guy to do!