Porsche has filed a new patent for an engine designed to deliver both power and efficiency, while still relying on combustion ...

Over the last few years, there’s been a resurgence in the popularity of two-stroke engines, even though competitive riders continue to rely on four-stroke power. So which is preferable?

From bold experiments to ingenious designs, these 12 Japanese engines highlight the innovation behind some of the most ...

Four-stroke engines complete a power cycle in four strokes of the piston (intake, compression, power and exhaust), requiring ...

The power stroke extracts work from these gases as they expand and force the piston to BDC. In the exhaust stroke, the exhaust valve is open and the combustion products are expelled from the cylinder.

As it turns out, you can indeed build a two-stroke engine from scratch ... question that’s now on everyone’s lips is whether a four-stroke one would be nearly as ‘easy’.

But most of what we’ve seen has been simple two-stroke engines. We’re really impressed with the skill needed to bring off a four-stroke engine like this, and we feel like we picked up quite a ...

Porsche's six strokes include the four familiar ones: intake, compression, power, and exhaust. But it inserts an additional compression and power stroke in the middle (following the first power stroke ...

4stroke is used in gixxer.2 stroke engines are no longer used in any bike as it causes more pollution and are not efficient as 4 stroke engines.

Ford sells remanufactured 7.3 Power Stroke engines through its dealership network and backs them with a two-year warranty with no mileage limit. Cost will vary by location, but our local dealer's ...