15-09-2022, 03:12 AM
(This post was last modified: 15-09-2022, 03:14 AM by Ian Williams.)
It looks like you have water going into the waterway above the valves rather than the cavity around the bores. I,e into the small core plug rather than the large one. If so you may not be cooling the bores very well, the two waterways are connected internally but often corrosion clogs the very narrow connections. This may restrict flow as well. I would disconnect the return to the radiator, put a hose into the rad to keep it full then run the engine to see how much water you have coming out. That should tell you if its not enough water getting through the system. if you have a huge flow then try a thermostat in the top hose to slow down circulation. My gut feeling is not enough water circulation for some reason, possibly as a result of a plumbing loop such as to the header tank, maybe an air lock, or a restriction in the water ways.
A cooling fan is not necessary in this situation unless sitting in slow moving traffic.
A cooling fan is not necessary in this situation unless sitting in slow moving traffic.
Black Art Enthusiast