When buying a 50 cc moped for the first time, many think that its capabilities will be enough for them. But they soon become disillusioned and start thinking about tuning. But not everyone has the money to buy branded kits. How to make tuning for a moped at almost no cost?
Instructions
Step 1
When starting tuning your moped, carry out a complete maintenance. Clean the exhaust pipe, air filter, adjust the carburetor, experiment with the rear sprocket. At the end of the break-in period, remove the maximum speed limiters. For beginners, this "tuning" is enough for a whole season - the device becomes noticeably faster.
Step 2
In the next step, install a zero resistance filter on the moped. This will slightly increase the speed and improve the response of the motor to throttle turns. Having installed such a filter, be sure to reconfigure the carburetor. If you have a special tool and a familiar turner, re-drill the jet. If none of the above is there, try putting Solex or Weber jets into the carburetor. They fit without modification for most popular moped models. Or get the ones you need from motorcycle parts stores.
Step 3
Carry out a thorough cleaning of the exhaust system. To do this, blow a blowtorch over the muffler. Deposits accumulated in it when the metal surface is heated will peel off from it and easily come out. If you have a welding machine, carefully cut the muffler along the seam, clean and weld again. This will give the moped vigor during acceleration.
Step 4
Go to the engine. If the moped is not new, measure the compression. A compression value of 8 to 10 is a good indicator. If this value is less, replace the rings. At the same time, avoid installing low-quality Chinese piston rings. Polish the cylinder head and top of the piston. Also polish the inlet and outlet windows. Attention! In a four-stroke engine, never touch metal objects, do not change the polishing of the valve in the places where they touch the head body. This can lead to damage to the motor during further operation.
Step 5
Take care of the sprocket on the rear wheel. If you want to increase the maximum speed, replace it with a smaller one with fewer teeth. In this case, you will have to sacrifice the dynamics of acceleration and traction on the slopes and under load. To improve traction and acceleration at the expense of top speed, use a large sprocket with more teeth. Together with the work performed on the engine, carburetor and muffler, the tuning performed will allow a maximum speed of up to 70-75 km / h
