Joes Map

Here are some of the advantages of a 2 stroke engine. They do not have valves, simplifying their construction. They have the potential for about twice the power in the same size because they fire once every revolution ( 4 stroke engines fire once every other revolution). This gives 2 stroke engines a significant power boost.

Now here are some of the disadvantages. 2 stroke engines don’t last as long as a 4 stroke engine, this is due to the fact of not having a lubrication system. This means that the internal parts of a 2 stroke engine wear out quicker. 2 stroke engines require a mix of gas and oil to lubricate the crankshaft, connecting rod, and cylinder walls. With each new mix of air and fuel injected into the combustion chamber, a small part of it leaks out through the exhaust port, which means that 2 stroke engines are less fuel efficient. This yields less miles per gallon, and creates more pollution than 4 stroke engines. Also, 2 stroke engines burn oil, so the exhaust stinks.