It's an L.Collari-Innotech XS400 buggy .21 engine, converted to marine with a Piranha/Niagara cooling jacket and flywheel turned to fit the SG style crank. L.Collari has used several engine manufacturers and vendors over the years to promote sales of product carrying his name... Innotech was one, but these engines were built by AXE Rossi. Specs look to be the same as the AXE Rossi "Black Magic", which was considered a very high torque .21 that still revved well.
