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What will happen if you raise the exhaust port on a two stroke?
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What allows burned gasses to leave the cylinders through tubelike chambers into the exhaust pipe?
It depends whether you are talking about a 2-stroke or 4-stroke engine. A 2-stroke is typically rotary valved where a port opens near bottom dead center of the piston stroke. This port is often in the cylinder wall and this is where the exhaust exits and where the new air/fuel mixture enters. A 4-Stroke has a camshaft that operates intake and exhaust valves. after the combustion stroke of the piston the cam actuates the exhaust valve. As the valve is open the piston comes up pushing the exhaust gas into the exhaust manifold, sometimes called a header or header pipe.
How do you polish an exhaust port on a 4 stroke engine?
http://www.angelfire.com/space/neon/porting.html
How do you tell if a 49cc engines is a 2 stroke or a 4 stroke for a pocket rocket?
It should be a 2 stroke .Ans. 2A 2 stroke engine has a transfer port from the bottom of the cylinder to about half-way up it; it has no valves.A 4 stroke engine has no transfer port, but has inlet and exhaust valves, with their associated valve gear.
How do you make a 31cc 4 stroke motor more powerful?
Suggestions, Increase bore. Increase stroke. Raise compression ratio. Improve exhaust flow through port matching and non restrictive muffler. Install larger carburetor. Install performance camshaft. Balance all rotating parts. Rokcney
What will happen if you do not replace an exhaust manifold that is leaking?
If the leak is against the head, it can burn tracks into the exhaust port faces as if done by a cutting torch.
2-stroke losing power what should you look at?
Fuel filter, air filter and carbon build up at or near exhaust port.
What does a expansion chamber do for a dirt bike?
it is used to increase the horsepower of the engine (see this page for a photo). This technique only works on two-stroke engines, which is why you see it on a lot of dirt bikes but not on street bikes. Most street bikes use four-stroke engines.The basic idea behind an expansion chamber is to use the momentum and pressure of the exhaust gases to create a pumpthat squeezes more air and fuel into the cylinder during the intake stroke. It does the same sort of thing that a turbocharger does, but it does it without moving parts.If you have read How Two-stroke Engines Work, then you know that the exhaust and intake parts of the cycle overlap. As the piston moves down, it uncovers the exhaust port first to let most of the exhaust out. Then it opens the intake port to let fuel/oil/air in. With a correctly-tuned expansion chamber in place, two things happen to help the intake process:As the exhaust gases expand into the expansion chamber, they create a vacuum at the exhaust port. This vacuum pulls fuel/oil/air into the cylinder.As the shock wave of the exhaust pulse hits the end of the expansion chamber, it echoes back, pushing any fuel/oil/air that got pulled through the exhaust port back into the cylinder. This page has a nice graphic that describes the process.By pulling extra fuel/oil/air through the cylinder and then pushing it back in, the expansion port has the effect of stuffing more fuel/oil/air into the cylinder on each stroke. This gives the engine extra power in the same way that a turbocharger does.Here are some interesting links:How Two-stroke Engines WorkHow Turbochargers WorkBuilding your own racing Expansion ChambersExhaust Pipe "Theory"Tuned Pipes
What is the difference between a 2 and a 4 stroke dirt bike?
Well with out boring you to death Ill give you the basic version. A 2 stroke engines piston on the down stroke pulls in fuel and air mixture on the way up it compresses mixture. At the peak of the stroke it is combusted forcing piston down. On the pistons up stroke the exhaust port opens and pushes out exhaust out. If you count the cycles there are 2 hence 2 stroke. The piston makes 2 cycles for every power cycle. The 4 stroke makes 4 cycles for every power cycle.
Where does the exhaust bolt on to a scooter?
Onto the exhaust port of the engine...
1986 iroc and your temperature wire came unplug from the temp gauge This happen under the hood you can not locate where to plug it Please help?
The Sensor is located on the drivers side head on the motor. It is between the Number 1 exhaust port and Number 3 exhaust port.
Diffenerence between 2 stroke and 4 stroke?
The difference is in the amount of stokes the piston makes in one cycle. A four stroke will explode on one stroke turning the engine over. Then on the up stroke it pushes the exhaust out. The next down stroke fills the cylinder with fuel. On the final stroke the piston compresses the fuel and the cycle repeats. This results in four strokes of the piston. A two stroke has two strokes of the piston before it repeats the cycle. The first stroke is the explosion. The piston is pushed down. on the down stroke the piston reveals a port that exhausts, and then another port is revealed that fills the cylinder with fuel. the up stroke compresses the fuel and then the cycle repeats. The logical difference is the 2 stroke will accelerate faster
What is the purpose of exhaust system brakes?
They provide resistance to the engine crankshaft in order to help control speed on a downhill descent. Exhaust brakes and Jake brakes aren't one in the same... an exhaust brake restricts exhaust flow, while a Jake brake opens the exhaust port of the cylinder during the power stroke.
