The O-145 is a smooth running engine that puts out 55-58 HP, not the 65 or 75HP claimed (it's only 145 cubic inches). You need to know that it is an antique airplane engine. Parts are rare and very expensive if you can find them. It is almost impossible to find front crankshaft seals and head gaskets. Good Luck
Brant Hollensbe W. Des Moines Iowa
