[Chester B. Stone, Jr.]

I have had both, and side radiator is a far superior arrangement. The problem I had with a rear radiator was that the slobber tube (which is the crankcase vent) exhaust combined with road dust to plug up the radiator. Only steam could clean it, but after I got the engine too hot. Some rear fans are belt driven which is inferior to a side hydraulic fan. The side radiator normally provides better engine access.