
Cylinder head is beadblasted in the combustion chamber as well as the intake and exhaust ports to remove all carbon and again inspect for any Cheap Engines, Buy Quality Automobiles & Motorcycles Directly from China Suppliers:2 Pair (4 pieces) VALVE STEM OIL SEALS For 150cc GY6 50cc QMB139 SCOOTER MOPED TAOTAO ROKETA Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return.

For most 150cc GY6 engines the clearance should be around. This is a 4 stroke single cylinder, air or oil cooled design that comes standard with two overhead valves.
