Here is three high performance pocket bike engines. All have quality case bearings and seals.
First is the gold head, stock slide carb, modified reed stopper, stock tin reed, stock half moon crank, blueprinted case, matched mild ported cylinder, slightly higher compression, stock flywheel, and stock 3 shoes aluminum clutch.
Second engine, blue head.
2pc higher compression head. Boost port in the cylinder, exhaust port work, ported base transfer ports, lightened crank with rocket key, 3 shoe aluminum clutch with HP springs, massaged case, tin Reed, modified reed stopper, race coil, and for now crappy race carb, soon a pumper carb.
Third engine, ported base cylinder transfers, ported exhaust port, wide third boost port, higher compression, blueprinted case, modified reed stopper, carbon fiber reed, taper bored round slide carb, upgraded coil, stock flywheel, 3 shoe steel clutch with HP springs.
Most of the power upgrades are in the blue printing/porting and lightening of parts. Also modifying the reed stopper and carb. always run a performance exhaust, which can be seen in another video of mine.
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