k hey guys I really need help I am doing a project for school on engines and I don't really know what the difference is between 2 stroke and 4 stroke is anyone can answer this it would be great also why do 2 strokes have fat head pipes and 4 strokes only have small ones? also why do 2 strokes blow up alot?

 

Go to this site. It will explain about all the different types of engines.


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that site is confusing i don't get it where to go I just want the basic differences

 

here is as basic as you can get, but it wont get you far:

2- stroke: quick

4-stroke: not as quick

 

A 4 stroke motor produces a power stroke every 4th stroke. A 4 stroke engine uses valves and has 4 strokes-intake, compression, power, and exhaust. They are also lubricated by oil which is in the engine at all times, a 2 stroke you must mix the oil with the gas which is why they smoke when they are running. A 2 stroke motor produces a power stroke every time the piston moves up, thus making them alot quicker than a 4 stroke. A 2 stroke engine also doesn't use valves which makes for less moving parts since there isn't a cam to open and close the valves. The reason the head pipes on a 2 stroke are so big is because they are tuned to provide enough back pressure to keep the new charge of fuel/air from going out the exhaust along with the burnt up fuel/air that is being pushed out. Since a 4 stroke engine uses valves to close off the intake and exhaust ports the head pipe can be smaller. As for 2 strokes blowing up alot i don't know anything about that. I hope this helped you out.

 

Very impressive thetank2006.

 

thank-you

 

2 strokes go ringggggg dingggg dingggggggggggggggggggggggg
4 strokes go braaaaappppp braaap brrrrrrrrrrrrrrrrrrrap
[img]i/expressions/face-icon-small-happy.gif[/img][img]i/expressions/face-icon-small-happy.gif[/img][img]i/expressions/face-icon-small-happy.gif[/img]

 

awesome reply warrior yfm

 

There are a few reasons they blow up more often.
1. To lean of a mixture going to the cylinder. If the mixure is lean that means that there is less oil in the mixture which causes lots of wear.
2. Improper oil mixture. (people run them on regular gas if a premixed machine)
3. Injector pump goes out causing them to run on regular gas.
4. To rich of a mixture causing lots of carbon build up on the head.

There are more reasons, I think the main problem is people don't understand the importance of proper tunning and oil mixture.