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What is better 2 or 4 cycle engines?

Updated: 10/26/2022
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10y ago

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It's more a question about being different than being better.

For a set weight, 2-strokes will make more power. But they will also make more noise, pollute more and use more fuel. But the engine has few parts and is cheap to make.

A 4-stroke that makes the same power will be bigger and heavier. A 4-stroke of the same size/weight will be weaker. But it'll run quieter, with less pollution and better fuel efficiency. It'll also need more parts and cost more money to make.


that depends on what your looking for. a two stroke has the ability to make more horsepower in a lighter weight package. The power of a two stroke is not as useable as a four stroke. A two stroke is easier to work on and requires you to mix oil in the gas.

a four stroke wont make as much power unless the motor is bigger. it is more usable power though. a four stroke will be better on fuel consumption and will most likely be more reliable.

this is an opinionated question i vote four stroke.
neither one is really better then the other you just have to really keep the rpms high for a two stroke and youu havee to be in the right gearr. A four stroke is easier and better for a beginner.
For Plain Out Engine RPM'S You Would Want A 2-Cycle. If You Want Durability And Longer Life (and normally cooler running too) You Want A 4-cycle. 2 Cycles Are Lighter Than Four Cycle Engines But, Four Cycle Engines Are Normally Going To Last Longer. If You Are Wanting Something For Racing You Better Go 2-cycle, But if you want a more powerful (utility) machine You May Want To Go Four.
It depends. I prefer 4 strokes because of the power output but that's just me. It depends on the rider really.

I prefer two strokes because of their simplicity, lower cost of maintenance, and for the fact that it takes actual ability to ride a two stroke the way it's supposed to be ridden- wide open. BRAAP!
This answer comes from wisegeek.com and I cannot say it any better:

Advantages of the two stroke:

  • Has more get-up-and-go because it fires once every revolution, giving it twice the power of a four stroke, which only fires once every other revolution.
  • Packs a higher weight-to-power ratio because it is much lighter.
  • Is less expensive because of its simpler design.
  • Can be operated in any orientation because it lacks the oil sump of a four stroke engine, which has limited orientation if oil is to be retained in the sump.

These attributes make two stroke engines very popular for a variety of uses from dirt bikes, mopeds, jet skis, and small outboard motors, to lawn and garden equipment such as mowers, edgers, leaf blowers, chain saws and hedge trimmers.

But there are other differences between the two stroke and four stroke engines that aren't so favorable, which is why you won't see two stroke engines in cars.

Disadvantages of the two stroke:

  • Faster wear and shorter engine life than a four stroke due to the lack of a dedicated lubricating system.
  • Requires special two stroke oil ("premix") with every tank of gas, adding expense and at least a minimal amount of hassle.
  • Heavily pollutes because of the simpler design and the gas/oil mixture that is released prior to, and in the exhaust (also creates an unpleasant smell).
  • Is fuel-inefficient because of the simpler design, resulting in poorer mileage than a four stroke engine.
  • Has a high-decibel whine that may exceed legal noise limits in some areas, depending on the product and local applicable laws.

4stroke
Depends on the conditions and personal preference. 2 stroke tends to have more power. While 4 strokes have more longevity.
two strokes are faster but can't climb very well.

four strokes are a bit slower but are way better at climbing.
two strokes are faster but can't climb very well.

four strokes are a bit slower but are way better at climbing.

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Q: What is better 2 or 4 cycle engines?
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Does Yamaha 80cc 4 stroke take 2-cycle oil?

No. In this case, stroke and cycle means the same thing. So 2-stroke/2-cycle engines should have 2-stroke/2-cycle oil and 4-stroke/4-cycle engines should have 4-stroke/4-cycle oil.


Can 4 cycle oil be used for 2 cycle oil?

NO! Don't do that. 2 cycle engines actually burn the oil in the gas, 4 cycle oil is JUST for lubrication, not burning.


What vehicles use four cycle engines?

All automobiles use 4 cycle engines. 2 cycles are for small moterized bikes or lawn mowers


Why 2 strokes engines are lighter than 4 strokes engines?

There is no oil resivoir holding oil that weighs around 1.7 pounds per quart. A 2 cycle engine also does not have valves which a 4 cycle does. All this makes the 2 cycle engine simpliar and lighter.


Why do 4 cycle engines require oil in the fuel mixture?

4 Cycle engines do not require an oil and gasoline mixture. The 2 cycle engine does require an oil and gasoline mixture. This oil and gasoline mixture for the 2 cycle engine provides critical lubrication for the rotating/moving parts.


Do you mix oil with gas for Sears Weedwacker 4 Cycle?

4 cycle means that you do not mix oil with the gas. They will have a place for the oil and a place for the gas seperate. Although, not many weedwackers have 4 cycle engines... 2 cycle engines are the ones that you need to mix oil with the gas.


Which oil is better for small engines like 70cc engine?

If it is a 2 cycle engine then use only 2 cycle oil. If it is a 4 cycle then SAE 10w30 is commonly used in these small engines. Consult your owners manual for the exact oil you should use. I do highly recommend synthetic oil in any air cooled engine.


What does 2 cycle and 4 cycle engines mean?

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Does a 1cylinder engine take oil?

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Which oil to use for a Briggs and stratton engine 4 cycle vs 2 cycle oil?

4 cycle! Automobiles are 4 stroke engines. chain saws snowmobiles and leaf blowers are examples of 2 stroke engines. If engine has an oil pan, or oil filter, it is a 4 stroke. if it does not have an oil pan, it is 2 stroke. Briggs and Stratton are 4 stroke motors.


Most engines are what kind of engine?

Most engines are internal combustion 4 stroke (4 cycle) engines.


Briggs and stratton oil?

Briggs and Stratton oil must be used for Briggs and Stratton engines. They have both synthetic and standard oil. They have oils formulated for 4-cycle and 2- cycle engines.