VCCA Home Forums TECHNICAL - 1945 AND EARLIER 1912-1928 1928 Capitol 1 Ton Truck Thermostat

I just replaced the thermostat in a 1928 Captiol Truck and noticed on the one I removed that the round valve disk had seperated from the rest of the thermostat body. As I look at the new one it looks like the round valve disk is soldered to the center shaft. This gave me to wonder if this is a design flaw or desinged to melt if engine overheats??? Does anyone know about the design intent on these thermostats?

Its been a good day at the Closson's. Had a driveway poured after waiting about 15 years. Cement work is great stuff, expecioally when you can armchair it and watch! :-) Thanks, Maxie

Don't know but I think the melting point of solder is far higher than I'd like my engine to run. "Soluble Plugs" are used a lot in machinery but I've never known one "IN" an engine.

You'll get the right answer now!!

Solder melting point is much higher than the cooling system is likely to reach by several hundred degrees. Should not be a problem. Since solder is soft vibration or movement of loose parts can eventually cause a failure.