Howdy ,
I was setting the timing on the 170 this morning after installing the new head and noticed the temperature starting to climb. The heater hoses were warm to the touch after about 10 minutes at idle. The upper radiator hose was cold, so I grabbed my infrared temp gun and checked them. The heater hoses registered 185 on the inlet and outlet and the upper radiator hose was ambient temperature 70 degrees. I checked the temperature sending unit and it registered 200. I then checked the factory gauge and it was almost to the full hot so I turned the car off and am letting it cool down.
The head I originally had on the car was a C4DE and I replaced it with a C7DE, so the temperature sending units were different sized. I switched over to a sending unit for a 1968 mustang to fit the hole. Will this be compatible with my 1965 gauge cluster? Also , when I ran the car yesterday it never got above the half point on the gauge but the radiator cap was off the entire time as I was trying to purge air from the system. Could I have an air bubble still trapped in the system? Are these cars susceptible to that? It's there a trick to burp the coolant system?
I ran it yesterday with the radiator cap off and waited for the radiator coolant level to drop and then filled it with water and ran it until I saw good coolant flow through the radiator. Am I worrying about nothing?
Kevin
PS I have not had any overheating issues before with the car, even in the Texas Summer.
I was setting the timing on the 170 this morning after installing the new head and noticed the temperature starting to climb. The heater hoses were warm to the touch after about 10 minutes at idle. The upper radiator hose was cold, so I grabbed my infrared temp gun and checked them. The heater hoses registered 185 on the inlet and outlet and the upper radiator hose was ambient temperature 70 degrees. I checked the temperature sending unit and it registered 200. I then checked the factory gauge and it was almost to the full hot so I turned the car off and am letting it cool down.
The head I originally had on the car was a C4DE and I replaced it with a C7DE, so the temperature sending units were different sized. I switched over to a sending unit for a 1968 mustang to fit the hole. Will this be compatible with my 1965 gauge cluster? Also , when I ran the car yesterday it never got above the half point on the gauge but the radiator cap was off the entire time as I was trying to purge air from the system. Could I have an air bubble still trapped in the system? Are these cars susceptible to that? It's there a trick to burp the coolant system?
I ran it yesterday with the radiator cap off and waited for the radiator coolant level to drop and then filled it with water and ran it until I saw good coolant flow through the radiator. Am I worrying about nothing?
Kevin
PS I have not had any overheating issues before with the car, even in the Texas Summer.