This is the O.S. Max .50 SX-H Ring Hyper Helicopter Engine with Hyper Cooling Head and 60LH Carburetor. Distance/top of cylinder head-bottom of mounting ears: 2...More

This is the O.S. Max .50 SX-H Ring Hyper Helicopter Engine with Hyper Cooling Head and 60LH Carburetor. Distance/top of cylinder head-bottom of mounting ears: 2.9 (74mm) Distance between mounting holes same side: 0.68 (17.5mm) Distance between mounting holes opposite side: 1.73 (44mm) Distance between muffler mounting holes: 1.4 (37mm) Length of cylinder head: 2.1 (54mm) Width of cylinder head: 1.8 (47mm) Distance/bottom of crankcase to top of cylinder head: 3.6 (92.3mm) Distance from center of engine to front bearing: 2.0 (51.6mm) Distance from center of engine to backplate bolt: 1 (25mm) Distance from center of engine to throttle lever: 1.5 (38mm) Needle Settings: High Speed: 1.5 turns out from fully closed Mixture Control (low speed): indentation on screw head straight vertical (up and down) jxs 8/06/04 ir/jxs updated carb info tjt 020305 updt lmm 4/14/09Less