Gt5A-ES ENGINE Don Butler Custom Modified

Heads up! This CUSTOM MODIFIED engine can be Pedal Started as well as OCDT Electric Drill Started.    Here's a standard Gt5a-ES SkyHawk 66cc engine that has been given the Golden Midas touch by the world-famous Don Butler Speed Shop in Chickasha OK.    This engine has a Don Butler balanced 10-hole crank along with exhaust port and transfer ports timing corrections to enable super RPM performance that Don's Speed shop is famous for.   Included is our OCDT with CCW cranking rotation for right side Hex M6 engine starting using 1/2" Cordless drill. Please know the improvements Don makes are not obvious from the outside.  We send Mr. Butler one of our SkyHawk Gt5A-ES engines ahead of time to ensure that we always have one to sell immediately with next day shipping.    1.  When received, Don disassembles our engine and balances and aligns the crank assembly.  ( 5 balance holes instead of the stock 2.)   2.  He Protractor indexes the piston travel to TDC and BDC and then Dremel grinds the cyl