Greetings, so I just bought my first bike a 2001 vn800 classic. Turns on right away but heats up very quickly I changed the radiator, Thermostat, and also when I changed the oil it was pretty milky so Im guessing water in the engine from what I’ve read. I took it to a bike shop and they told me it’s the water pump or a blown gasket. I was told it would be costly to fix up. I was thinking of buying an engine for it or repairing it myself. Would it be worth it? Any suggestions? Help!