Small, ultra-fast, primary and “afterburner” secondary combustion events promise to deliver brake thermal efficiency as high ...

Just like the Panigale V2 S, the naked Streetfighter V2 S also went under the surgeon’s scalpel for a serious facelift in ...

But for mere mortals, the 2025 KTM 450 SMR is an incredibly sharp tool and will provide years of riding and sliding before ...

Called the Honda K24, it's one of the most impressive and oft-tuned production engines in automotive history. The K24 wasn't ...

Kawasaki ZX-4R gets flat ₹ 40,000 off on ex-showroom price. Powering the ZX-4R is a 399 cc liquid-cooled inline-four motor that puts out 75 bhp at a whopping 14,500 rpm and 39 Nm of peak torque at ...

Nevertheless, the prototype W-43 engine ... (25.4 mm) higher within the block. This was done to improve the geometry of the valve train and also reduce the mass of the pushrods. The intake valves ...

Note the vernier throttle on the lower panel and the discharge relief valve ... of 4-inch full flow valves and piping for large-diameter-hose discharges. The position and size of intake and ...

These days, the four-stroke V-4 engine ... heads have big intake ports and were influenced by the designs of other high-flow, high-rpm engines, including the Chevy R07 NASCAR engine.

The 7.3 Power Stroke ... a cold air intake does and if it's worth it. The short answer is that it unlocks some additional output by grabbing colder oxygen located away from the hot engine ...

Intake, compression, power, then exhaust. Every 4-stroke engine ever made – about 80% ... engine and the 6-stroke design is in the cam and valve timing. Porsche's design is vastly different ...

It uses a valve disk that also rotates to complete a four-stroke cycle of intake, compression ... a breakthrough when its 2.5-liter, 4-cylinder A25K-FKS engine got to 39% thermal efficiency ...

Inline-4 engines ... mm bore and stroke, allowed for free-revving and power output across a wide rpm range. Mitsubishi's MIVEC technology enabled variable valve timing on both the intake and ...