The impossible to solve overheating problem

purplehazenils said

Just back from the garage, I had the original radiator installed and we put a Co2 meter at the opening to the radiator, no sign of Co2 at all. The guy was nice and didn't charge me for the 15 minutes.
I also did BigBlockMopars test before this smelled for exhaust, could not smell anything either. So I think it's safe to say my theory of combustion in the coolant is gone. The guy at the garage said that if I'm losing coolant into the cylinders it's would be very obvious ammounts of white smoke and that the engine might run bad on cold start up.
Going to start trying everything that has been suggested later on today.

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Just been reading this post, I had an overheating problem on my 62 S series slant, it wouldn’t boil but kept getting hot at lights and heavy traffic. Pretty much went down the same path as most of the posts, in the end, a new radiator, reinstalled spring in the bottom hose, put a seven blade fan from an ac slant on, made a fan shroud, made sure fan blade was half in half out of shroud and put a new original style impeller water pump on. I tested system with a thermal camera, bonnet shut and at idle in the garage, temps are now 71 C inlet temp, 44 C at radiator outlet. I can vouch for all the previous post, 1 step at time, good luck with sorting it, sorry we use Celsius for temp in Australia