Another straggler followed me home!
Well , despite the “radiator”, it runs. I had to change the starter as it was locked up and hook a jerry can up as it wouldn’t run on varsol! The float was stuck and the bowl overflowed. A shot or three of carb clean and that was fixed. I’m going to dig through my collection and see if I can find a rad that will fit The Hulk. I was worried when I saw this. Wasn’t sure what happened. Would have been a real shame if the engine was seized. It is clean blue paint, as in freshly overhauled.