BigRedRunner
01-20-2009, 10:14 PM
Does anyone know if early CT90 (Trail 90) cylinders are the same as US90 (1970-3 ATC 90) cylinders? I'm talking about the cylinders that don't use the headgasket with the three notches in it. Honda has different part numbers listed, but the things have the same bore and stroke and look darn near the same. :wondering (I will of course take an early model ATC 90 cylinder if I can find one). Thanks!