Thermostat ???
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From: N Richland Hills, TX
Thermostat ???
What was the original thermostat temp for a '65 F100? I have a 352, 3-spd, with air conditioning. When I use the air, the engine temp will climb up to 215 F. It hasn't actually boiled over but it will fill the recovery bottle up to the "fill hot" line. I currently have a 160 F thermostat and have two 16" electric fans and a shroud.
Oh Ford Guru's help me out once again!
Oh Ford Guru's help me out once again!
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Joined: Nov 2001
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From: Western NC
Thermostat ???
I'll take a stab at 180 deg. That's not a flat guess, but I'd lay odds I'm right. I'd be amazed if it were to have come stock with a 160. I don't think so. I don't think 190's were used then, but there's no reason not to. You've apparently got a cooling capacity problem now and a new t'stat won't help from the sounds of the problem you describe.
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Joined: Nov 2000
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From: Texas
Thermostat ???
If your stat is working, the 160 will keep the engine cooler than the 180 unit. I would say you need to look further into the problem. Your cap could be the wrong pressure or your water pump is not working to peak performance. Even the radiatior could need cleaned out. What ever the issue, replacing the stat with a higher temp is not going to fix the problem.
As a side note, your radiator should only be filled to 1" above the cooling fins. If you fill to the top, your coolant will expand as it heats, push through the cap into the overflow. Once equalized, the overflow will stop spitting out the coolant.
As a side note, your radiator should only be filled to 1" above the cooling fins. If you fill to the top, your coolant will expand as it heats, push through the cap into the overflow. Once equalized, the overflow will stop spitting out the coolant.
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Joined: Nov 2001
Posts: 261
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From: Western NC
Thermostat ???
I'll stand by my earlier post and say that you don't have sufficient capacity and capacity includes issues such as airflow. You simply are not dissipating heat as rapidly as it is being generated. The thermostat is irrelevant here.
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From: N Richland Hills, TX
Thermostat ???
UPDATE:
I replaced the 160 degree thermostat with a 195 degree thermostat and the results were very surprising. The temp dropped by almost 15 degrees!
I am a neophyte when it comes to mechanics, but it seems to me that if the coolant remains in the radiator until the thermostat opens at 195 degrees it will have longer to disapate the heat until it is released into the block.
After I changed to the higher thermostat I drove the truck under the same conditions, ie: A/C on, outside temp in the high 90's, and stop and go traffic. I used a laser-equipped temperature sensor and checked the temp at the radiator, block, radiator hoses, heater hoses, etc. The temp in all locations would vary, but overall the readings were cooler at every location after the hotter thermostat was installed.
So I guess I proved that a hotter thermostat can make an engine run cooler!
I replaced the 160 degree thermostat with a 195 degree thermostat and the results were very surprising. The temp dropped by almost 15 degrees!
I am a neophyte when it comes to mechanics, but it seems to me that if the coolant remains in the radiator until the thermostat opens at 195 degrees it will have longer to disapate the heat until it is released into the block.
After I changed to the higher thermostat I drove the truck under the same conditions, ie: A/C on, outside temp in the high 90's, and stop and go traffic. I used a laser-equipped temperature sensor and checked the temp at the radiator, block, radiator hoses, heater hoses, etc. The temp in all locations would vary, but overall the readings were cooler at every location after the hotter thermostat was installed.
So I guess I proved that a hotter thermostat can make an engine run cooler!
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Thermostat ???
Originally posted by shakespearesdad
UPDATE:
I replaced the 160 degree thermostat with a 195 degree thermostat and the results were very surprising. The temp dropped by almost 15 degrees!
I am a neophyte when it comes to mechanics, but it seems to me that if the coolant remains in the radiator until the thermostat opens at 195 degrees it will have longer to disapate the heat until it is released into the block.
So I guess I proved that a hotter thermostat can make an engine run cooler!
UPDATE:
I replaced the 160 degree thermostat with a 195 degree thermostat and the results were very surprising. The temp dropped by almost 15 degrees!
I am a neophyte when it comes to mechanics, but it seems to me that if the coolant remains in the radiator until the thermostat opens at 195 degrees it will have longer to disapate the heat until it is released into the block.
So I guess I proved that a hotter thermostat can make an engine run cooler!