A 4-stroke will run quieter and cleaner. It will rev lower. For a given engine power it'll be heavier and bigger. For a given engine power it'll use less fuel.
The engine will need more parts and be more complicated
4-strokes generally have better torque at low revs.
A 2-stroke will run noisier and pollute more, It will rev higher, for a given engine power it'll be smaller and lighter. For a given engine power it'll use more fuel. The engine will consist of fewer parts, and be a simpler design.
2-strokes generally have less torque at low revs but do better at high revs.
A 2-stroke dirtbike will be powered by a 2-stroke engine and a 4-stroke dirtbike will be powered by a 4-stroke engine. For the same power, the 2-stroke will be a lighter bike. For the same weight, the 4-stroke will be a weaker/slower bike. The 2-stroke is likely to use more fuel and make more noise. The 4-stroke will run cleaner and quieter.
There is no thermodynamic difference between them .
cr250 (two stroke) or crf450 (four stroke) i personaly only race Honda and they have always been great bikes
if you see the difference between valves
valves are use in four stroke engine, and ports are use in two stroke engine.
the difference is that a kx is a 2 stroke bike and a klx is a four stroke. the difference in strokes is the cylinders and a 2 stroke needs gas mixed with the oil
Four-stroke engines have a spout where you add oil to the engine. On two-stroke engines, oil has to be added to the fuel. (Four-stroke and two-stroke are also called four-cycle and two-cycle, respectively).
The difference between 2stroke engines and 4-stroke engines are pretty much the same regardless of where the engine is used. To read about it, check out the related question below.
a four stroke has a timing chain and a cam and a two stroke doesnt a two stroke has reed valves
In a two-stroke engine, two strokes is one cycle. In a four stroke engine, four strokes is one complete cycle. A stroke is a part of a cycle. Remember that the "up" motion and the "down" motion each count as one stroke.
the difference between the Honda CR and CRF is that the CR is a two stroke bike, while the CRF is a 4 stroke bike.... the F stand for four stroke
A 2stroke carburetor is quite the same as a 4 stroke. but maybe sometimes the 2 stroke has bigger jets for more fuel as they require more gas