[Huib Visser] built this glass cylinder four-stroke engine and he took great care to make it beautiful. We don’t need our projects to be polished and gleaming, but we have to admit that this the ...

Porsche's six-stroke engine patent indicates a shift in combustion tech, adding power strokes to enhance efficiency and ...

The German automaker sees your four-stroke engine and raises you... two more strokes.

The 452-pound Ténéré 700 features a 689cc liquid-cooled four-stroke two-cylinder engine that ... With 659cc, the Tuareg gives ...

In the exhaust stroke, the exhaust valve is open and the combustion products are expelled from the cylinder. The sequence shown on the next page represents this behavior for a Mitsubishi direct ...

Today’s outboard motors range in size and power, from two‑stroke powerheads to four ‑ stroke engines like the Mercury Four ‑ Stroke, which features 360 ‑ degree turning, 123cc of displacement and 8 ...

You don't have to worry about a gas engine going for an hour while you ... Gas motors can be very heavy; for example, Ryobi ...

Along with a TIG welder and mechanical ingenuity bordering on genius-level, all of which come to bear on this fridge compressor to four-stroke engine build. The video posted by [Let’s Learn ...

It's been a long time since the automotive world has bothered with the mixing of oil and gas of the two-stroke combustion cycle — but soon, it may come time to rid ourselves of four-stroke ...

Intake, compression, power, then exhaust. Every 4-stroke engine ever made – about 80% of all engines currently in existence – function on this principle – even rotary engines. But now ...

Ilmor says the next step is to build another working prototype with targets of 10% better fuel efficiency and 20% less engine weight compared to an equivalent four-stroke engine.

When buying an outboard engine or repowering your boat, there are plenty of questions to consider. Should I buy two-stroke or four-stroke engines? Are two engines better than one? Are three engines ...