At the moment the exhaust valves or ports begin to open ... seriously turbo-boosted power has been too sudden for casual use on a motorcycle. Therefore exhaust energy is put to use as sound ...

But who invented the system and why did Ducati adopt it, when every other motorcycle ... breathe through valves that open and close to let the air/fuel mixture in, the burnt exhaust gases out ...

The audible result is the consistent ticking of the exhaust valve, which consistently opens ... Similar to the standard structure of a two-cylinder motorcycle engine, Harley-Davidson engines ...

First, some basics: If you want to get fuel into the combustion chamber and exhaust gases out, they must pass through the valves. The valves’ job is to let things in/out as well as contain the ...

as to how the dual-mode exhaust puts a grin on your face. He spends some time with a special Harley-Davidson motorcycle, likening the two weekend toys. But we all know what we’d rather have in ...

Valve overlap—that crucial interval when both the intake and exhaust valves are open, expressed in degrees of crankshaft rotation—is typically a fixed parameter and always a compromise.

By removing your muffler you increase your chances of burning your exhaust valves, melting plastics or your boots due to the change in heat distribution, and possible backfiring. Why risk harming ...

The whole build began with an idea for a different kind of intake and exhaust valve. [Meanwhile In the Garage] dreamed up a design that does away with the traditional poppet valve. Instead of ...