Complete List of Car Piston Diameter Sizes

Knowing the size of a car piston at this time is very important, especially when you want to replace this component.

The many pistons available in the market sometimes cause someone to mistakenly buy a piston due to the abundance of motorcycle pistons circulating.

So what is the correct size of a car piston diameter? Check out the complete list of car piston diameter sizes below.

List of Daihatsu Car Piston Diameter Sizes

Speaking of car piston diameter, it varies greatly. Quoted from gratpistonrings.com that:

Usually, cars have a bore diameter ranging from 6.00 mm or 2.622 inches to a size of 4.016 inches or 102.00 mm.

The smallest piston diameter size is usually used by the Daihatsu Ceria or Kancil, while the largest piston diameter size is used by the Daihatsu Delta (diesel 3.4L).

Meanwhile, the most common standard car diameter size in Indonesia refers to the size of 2.992 inches or 76.00 mm like the Daihatsu Charade 1.0L 993 cc.

Does the Difference in Car Piston Diameter Matter? 

You may be wondering if the difference in car piston diameter has an effect? The answer is yes. 

Usually, each car manufacturer adjusts the piston size according to the car's cc. The reason is quite classic because cars with larger cc certainly need pistons with a larger diameter. 

This refers to the piston component, namely the ring on the piston. The role of the piston ring itself has a crucial function in the car engine, such as preventing compression leaks, preventing oil from entering the engine combustion chamber, and reducing friction on the cylinder walls. 

Therefore, a larger diameter will be able to reduce friction on the cylinder walls so that the car engine can produce power smoothly.

This diameter effect ultimately leads some technicians to modify the piston diameter size known as the cutting technique or also often referred to as bore up oversize.

Read Also: Easy Way to Install Anti-Smoke Car Piston Rings

What is Bore Up Oversize? 

Bore up oversize is the process of modifying the engine cylinder part by machining and replacing the piston diameter with a larger size. Usually, the piston diameter size will be changed in decimal units such as 25, 50, to 100. 

For example, if the standard piston size is 76.00 mm, it will be cut or oversize by 50, then the piston will have a new diameter of 76.50 mm.

This makes the piston distance on the boring more fitting and precise, thus preventing compression leaks. So why is it important to do cutting or bore up oversize? 

Benefits of Bore Up Oversize

Here are the advantages and benefits you can get.

1. Engine Performance Becomes Faster

The first advantage you will get is that your car's engine performance will be faster than before. The car will easily reach much higher speeds compared to the original factory settings.

2. Increases Acceleration

For those of you who want to feel a different sensation when accelerating while driving, doing a bore up is the right choice. Because engine acceleration is caused by increased compression in the car. 

3. Restores Engine Performance Due to Age

Cars that are too old usually have less than optimal engine performance, especially if not well maintained.

This happens because the age of the engine and piston rings have weakened due to excessive friction in the cylinder.

One of the tips to increase car performance is to replace it with a new piston or perform a bore up oversize on the car. 

Hopefully, the review about car piston sizes above can add to your information before performing car piston maintenance. For car piston maintenance, you can trust it to your favorite nearby Daihatsu workshop.