An engine's displacement dictates power output based on the bore and stroke, while compression ratio influences how strong ...

Two-stroke engines used to be ubiquitous in dirt bike racing, thanks to their lightweight construction and horsepower. Packed in a dirt bike frame, they make a motorcycle playful in the corners and ...

Traditional Two-Stroke Engine Issues A traditional two-stroke engine has the piston pushing down after firing, moving past an exhaust port and allowing the exhaust gases to leave the chamber.

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A two-stroke exhaust pipe features a unique shape with varying diameters and an expansion chamber, which is specific to ...

As we begin the last article in this series on the basics of the internal combustion engine, let's stop to review what we've covered during the last five articles. We began last May by detailIing the ...

Engine power is a product of its overall displacement, but two similarly-sized engines with different bore and stroke characteristics don't perform the same.

Bore and stroke do far more than define engine size. They help shape airflow, piston speed, torque delivery, and rev ...