The Ford Barn

35 coupe · 12-18-2016, 01:58 PM

I have a 50 F1 with a motor done by Walt Dupont in it and It has run great for 4 years, and here in Pennsylvania it got really cold the other day so I decided to check the radiator for antifreeze, and when I looked could not see any, It was down about a quart, I put some in, left room for expansion, started the truck and without any radiator cap when the heads got hot the fluid overflowed the radiator. The heads were hot,but the thermostat housings and the upper cases were not even warm and I did not see any flow in the radiator. There is no coolant in the oil and it idles good, no moisture coming out exhaust. Bottom hoses are hot. Is it possible to have 2 stuck thermostats. I let it cool and put the radiator cap on and tried again and it started blowing out the overflow. It has a new walker radiator, new cap. 180 thermostats. Thanks.

12-18-2016, 01:58 PM	#1
35 coupe Senior Member Join Date: May 2010 Posts: 373	Overheating or not I have a 50 F1 with a motor done by Walt Dupont in it and It has run great for 4 years, and here in Pennsylvania it got really cold the other day so I decided to check the radiator for antifreeze, and when I looked could not see any, It was down about a quart, I put some in, left room for expansion, started the truck and without any radiator cap when the heads got hot the fluid overflowed the radiator. The heads were hot,but the thermostat housings and the upper cases were not even warm and I did not see any flow in the radiator. There is no coolant in the oil and it idles good, no moisture coming out exhaust. Bottom hoses are hot. Is it possible to have 2 stuck thermostats. I let it cool and put the radiator cap on and tried again and it started blowing out the overflow. It has a new walker radiator, new cap. 180 thermostats. Thanks.