Do 2 strokes need back pressure?
Registered. lower back pressure will mess with the pipe and the way it functions, a 2stroke pipe is made to work with some pressure in order to push the exhaust waves back into the motor thus filling the cyl with new fuel and also burning the unburned fuel in the exhaust.
What does a 2 stroke silencer do?
A two-stroke pipe uses its reflective pressure wave to keep the fuel/air mixture inside the combustion chamber. Most of this tuning is done in the pipe itself, but muffler length and diameter play a part.
Can you run a 2 stroke silencer on a 4 stroke?
The expansion chamber from a 2-stroke would not work well on a 4-stroke. If you go with two silencers, be sure the pipes are long enough between the exhaust and the silencer.
What happens if you put a 2 stroke exhaust on a 4 stroke?
You can run a 4 stroke motor with fuel youve mixed for a 2 stroke. You may have oil smoke from the exhaust or foul plugs over some time, but it wont hurt the engine.
Why do 2 strokes have big exhaust?
That bulge is called an expansion chamber, and it is used to increase the horsepower of the engine (see this page for a photo). The basic idea behind an expansion chamber is to use the momentum and pressure of the exhaust gases to create a pump that squeezes more air and fuel into the cylinder during the intake stroke.
Why do 2 strokes have big pipes?
Why does a 2 stroke have a fat pipe?
The dime-store answer is that 2-strokes do not have valves, so they have an exhaust with an expansion area to draw the products of combustion out of the cylinder and allow a new charge in. They are tuned to the engine to allow for different power ranges.
Why do 2 strokes have fat pipes?
Do 4 strokes have expansion chambers?
And there have been “expansion chambers” built for four-strokes for years. They’re called megaphones. In very simplified form, first understand that the exhaust opens, then the intake opens, then the exhaust closes, then the intake closes.
Can you straight pipe a 2 stroke?
A straight pipe will work on a 2 stroke, but it would probably make less power, need carb retuning, and as your dad said if it was not retuned, it could be bad for the engine.