Originally Posted by RichH
You risk BOILING the water INSIDE the pump and also IN the Hx, therefore BAD application position for a pump. ---
Thanks, that's the sort of positive information I needed. I had a feeling it was not clever and you've succintley confirmed that.
I will re-engineer as required and have the pump still belt driven but on the cold side of the heat exchanger. It's gonna be a tough fix but I believe it to be the best solution.
Originally Posted by MacGyverRI
I would go w/ a quality replacement elec. pump like it had and a spare if it's feasible $$.
Thanks but I have little faith in electric pumps so I'll pass on the suggestion. I have got one which I will use if an emergency presents itself but realistically, the genset should never constitute an emergency. I still have another 200amps of power generation on my normal alternators.
Thanks to all for your input.