Yeah so whats up first time doing anything like this buddy gave me scooter for free I ordered a big bore engine assembly. Now i ordered the "B" case gy6 with 61mm piston. Im kinda regretting it bc there isnt alot of info on this engine. So let me post some pics and pleaase chime in.
Product # 2638 Engine assembly 161QMK, 170sm3 Enlarge 19900 p. 19500 p.
Engine 161QMK (168,8sm3.) Fits without modification in exchange 152QMI (125cc), 157QMJ (150cc).
Not suitable for installation in return 139QMB / QMA (50-90cc)
The engine is already equipped with factory-assembled cylinder volume 170ss and the cylinder head with larger valves. The engine has a higher dynamic characteristics, making it easy to overtake their classmates. In this engine is recommended to fill in oil viscosity 10W-50. To achieve the full advantage of the engine, we recommend installing a carburetor with a 26mm outlet diffuser. Engine 161QMK: (total volume of Oil 1.2 liters instead of 0.9 liter usually
Bore and Stroke: 61mm x 57,8mm Capacity: 168.8 cm3 Power: 9.8 hp when 7000ob. Torque: 10Nm at about 4500-6000. Compression ratio: 9.2: 1 Reinforced crankshaft Posed as a 12 wheel and 13th with low-profile tires. The maximum speed of the effluent 100-110km / h Wheel 12 to 13 inches (835 or 842 belts long)
If wheel 12 inches, the flange of the wheel should be 146mm:
Post by devamotoring on Nov 14, 2016 14:54:02 GMT -6
I have one of those thats gy6 motor 150cc they come in nomerous brands all ending up being the same under the plastics i have one custom built by miself im new her and dont know how to post pics so i can show you and ih work at a scooter store that has everything to get that bike going fast
That mess look like a chinese scooter without the plastic. The number of your motor will be down at the bottom on the left side of the engine. It is Stamped. As for Manufacture just remember nothing on a chinese scooter is just a bunch of parts put together.
well it's a tank scooter probably a qmj157 engine which is a 149.6cc 57mm piston. the largest bbk you can install with out a case mod is 58.5mm which brings the cc up to 155. any bbk over that requires an engine case bored to match your cylinder jug. for engine ID look for letters and numbers to be stamped on the top side of the long case by the rear wheel. however it seems parts are just laying on it and incomplete. the frame is identical to roketa mc 04 150. and of coarse the original post is over 2yrs already. lol