The structure of 1 10-3 This car is an old Yamaha engine, and the actual displacement is only 102CC, which is slightly smaller than that of most 1 10CC engines. Actually, it should be 100CC engine.

The actual displacement of the engine is mostly marked on the cylinder. The following figure shows the cylinders of this engine. You can clearly see that its displacement sign is 102cm? (i.e. 102CC).

According to the regulation of engine displacement, the actual displacement of 1 10CC engine is about 1 10CC, and now there are 1 19CC in various factories. 102CC belongs to 100 or so, which should be regarded as 100CC engine, but the manufacturer marked it as 1 10CC.