pistokaslisäystä

Pistokaslisäystä, also known as "piston porting" or "piston valve modification," is a technique used to improve the performance of internal combustion engines. This process involves modifying the piston to increase the effective compression ratio, which can lead to higher power output and improved fuel efficiency. The modification typically involves removing or altering the piston's skirt, which is the part of the piston that slides within the cylinder wall. By reducing the skirt's contact area with the cylinder, the piston can move more freely, allowing for a higher compression ratio.

The primary goal of pistokaslisäystä is to achieve a higher compression ratio, which can be beneficial in several ways. A higher compression ratio can lead to more efficient combustion, resulting in improved power output and potentially better fuel economy. This is because a higher compression ratio allows for more air to be compressed into the cylinder, which can then be mixed with fuel and ignited more effectively.

However, it is important to note that pistokaslisäystä can also have some drawbacks. Increasing the compression ratio can lead to higher temperatures within the combustion chamber, which can potentially cause engine damage if not managed properly. Additionally, the modification can affect the engine's oil consumption, as the reduced skirt contact area can lead to increased oil consumption.

Pistokaslisäystä is typically performed by experienced mechanics or engine builders who have the necessary skills and tools to make the modifications safely and effectively. It is also important to ensure that the engine is properly maintained and monitored after the modification to prevent any potential issues. In some cases, pistokaslisäystä may be combined with other performance-enhancing modifications, such as porting and polishing the cylinder head, to further improve the engine's performance.