Hi,
How do you plan to move the water? With a pump or thermocycle? I have a large truck radiator that I have been thinking to remove the fan cowling, and just let the heat dissipate. Similar to a barrel.
The purpose of wanting a radiator is to run antifreeze and not have to drain the system when the engine is unattended during the winter.
The first failure I had was when the Metro water pump shaft broke internally. The second was a winter freeze (My fault). This week I had to totally rebuild after the oil dipper on the crank broke off and the engine ran afternoon and night with no oil splash. This required a new crank, rod, piston, sleeve, bearings...
Thanks,
Earl Beverly