[jmroy]

Ok, so based off of my post in the wanted section I know even less about the twin cylinder Kohlers than I thought. From what I understand from Matt the crank cases are aluminum but the cylinder jugs are cast iron on the Magnum and KT series? Did Kohler ever make a fully cast iron twin cylinder?

The whole reason I'm looking for one is to build a twin cylinder puller. The class I'm trying to get into has to be originally 16-20hp, and maintain the stock stroke, so I won't be going crazy I'd just rather start with the best base possible and go from there. How would the newer aluminum v twins hold up to being beefed up to push like 30 hp? I'm thinking that might be a better route since they have the advantage of over head valves.