Jeezy After my 140 radiator developed a leak I had it re-cored and replaced both radiator hoses and a new thermostat. (87.5 C) I flushed out the system and added new coolant. I believe I successfully purged air from the system but It seems to run hot - not overheat but hover around the 3\4 mark right up to just below the orange mark sometimes. I've since removed the thermostat and verified its opening at the correct temp. Is it possible air in the system is the culprit? do I need to use a lower temp thermostat? I looked over the water pump when it was out and it looked to be operational and not corroded. The heater is hot when the thermostat is open suggesting the water is circulating. Maybe a blockage? Interested on hearing peoples thoughts - perhaps this is normal and I'm overthinking it.
Roinik Can you take the temp of the inlet tank with another device? It could be an electrical device such as the sender or voltage reg in your instrument cluster. Verify with the other measurement first.
Vee_Que My 122 with an electric fan and far higher compression then a b20a runs an 82* thermostat from memory, the temp sender on the back of the head is usually around or below the middle in winter and closer to red in summer, but not touching. I also run an electric sensor on the front and it sits under the thermostat, it usually is around 80 in winter and the fan turns on only really in traffic, and 95 in summer. The fan is sensed from the radiator core near the top. They bleed up pretty easily if you have that heater tap open, but the issue may be in your water pump and if you're unsure of its history, I'd start there despite the cost.
egads Roinik;c-142153 wroteCan you take the temp of the inlet tank with another device? It could be an electrical device such as the sender or voltage reg in your instrument cluster. Verify with the other measurement first. Very this, also, what year?
Jeezy egads;c-142172 wroteRoinik;c-142153 wroteCan you take the temp of the inlet tank with another device? It could be an electrical device such as the sender or voltage reg in your instrument cluster. Verify with the other measurement first. Very this, also, what year? Roinik;c-142153 wroteCan you take the temp of the inlet tank with another device? It could be an electrical device such as the sender or voltage reg in your instrument cluster. Verify with the other measurement first. Good idea - might have a go at rigging up a probe in place of the temp sensor. This one is a 1973
Major Ledfoot Hendo pointed me towards this page, which has some useful notes about burping the system, etc. http://www.sw-em.com/Cooling_System.htm Burping the system of air in these things is very easy.
Jeezy bgpzfm142;c-142190 wroteHendo pointed me towards this page, which has some useful notes about burping the system, etc. http://www.sw-em.com/Cooling_System.htm Burping the system of air in these things is very easy. Thanks for that. Will get hold of an infrared thermometer and see what I can figure out.