4 stroke?

[plott hound]

4 stroke=4 cycle

1st cycle-intake. piston going down

2nd cycle-compression. piston going up

3rd cycle-ignition/power. piston going down

4th cycle- exhaust. piston going up

so why is listed a four cycle if its only 2.75 strikes of the piston?

[plott hound]

so why is listed a four cycle if its only 2.75 strikes of the piston?

that is the travel of the stroke.piston moves 2.75" from TDC to BDC

sorry grease monkey,never saw your post.

[grease monkey]

that 2.75 listed for stroke is the distance of travel between top dead centre and bottom dead centre. That particular measurement is in inches.

[curtisbyrne]

so why is listed a four cycle if its only 2.75 strikes of the piston?

[ARGOJIM]

Curtis,
All modern machines are produced 4 stroke since about 1990 with the Big Max being the last 2 stroke hold out I know of.
Technically they are neither 4 stroke or 2 stroke but 4 cycle or 2 cycle, many (people) of us use the word stroke as it is common said though incorrect. The reason for this is the amount of strokes the piston comes to top dead center before the spark is fired.

4 cycle engines have a camshaft and valves ( OK Don hit me, I know where you're gonna go), most 2 cycles/strokes have either ports or reed valves.

The stroke you have listed there is the amount of piston travel your engine has.

[liflod]

https://en.wikipedia.org/wiki/Four-stroke_engine

https://en.wikipedia.org/wiki/Two-stroke_engine

[curtisbyrne]

its says the kohler m18 is 2.75. not 4???

[curtisbyrne]

ok thanks
Specifications
Model: .................................................. ........................................... M18.............................. M20
Bore: ................................................. inches (millimeters) ............. 3.12 (79.2) ................... 3.12 (79.2)
Stroke: ............................................... inches (millimeters) ............. 2.75 (69.85) ................. 3.06 (78.0)
Displacement: ............... cubic inches (cubic centimeters) ............. 42.18 (691.3) ............... 46.98 (769.8)
Power (@3600 RPM): .................. horsepower (kilowatts) ............. 18 (13.4) ...................... 20 (14.9)
Weight: .................................................. ... lbs. (kilograms) ............. 130 (59.0) .................... 130 (59.0)
Oil Capacity: ........................................ U.S. quarts (liters) ............. 1.5 (1.4)1 ...................... 1.5 (1.4)1
Spark Plug Gap: ................................ inches (millimeters) ............. 0.035 (0.89) ................. 0.035 (0.89)
Spark Plug Type: ............................... Champion or Equiv. ............. RV17YC....................... RV17YC

[oldstreetracer]

Two stroke: Piston goes up and down two times per crank shaft revolution. Four stroke: piston goes up and down 4 times per revolution. Two stroke makes more power at high RPMs than a four stroke. There are other differences as stated by others.

[wedge]

I read that as "I know my kohler is three point something so it's a four stroke but is the briggs 18 a 4 or 2?"

If I read that right your a little confused and your confusing us lol

To answer your question though, the Briggs 18hp motor is a 4 stroke.

super simplified guide to 2 stroke vs 4 stroke
2 stroke = no way to check oil - gas and oil get mixed togther and both burn through combustion = blue smoke out the tail pipe
4 stroke = you can check oil (dipstick, sight window, etc) the engine oil stays in the crankcase and only fuel is consumed during normal operation = cleaner burning

That's the answer rite there !!

[Canadian_Zuk]

i know my kohler is 3. something so its a four stroke but is the brigs 18 a 4 or 2?

I read that as "I know my kohler is three point something so it's a four stroke but is the briggs 18 a 4 or 2?"

If I read that right your a little confused and your confusing us lol

To answer your question though, the Briggs 18hp motor is a 4 stroke.

super simplified guide to 2 stroke vs 4 stroke
2 stroke = no way to check oil - gas and oil get mixed togther and both burn through combustion = blue smoke out the tail pipe
4 stroke = you can check oil (dipstick, sight window, etc) the engine oil stays in the crankcase and only fuel is consumed during normal operation = cleaner burning

[plott hound]

i know my kohler is 3. something so its a four stroke but is the brigs 18 a 4 or 2?

your kohler is a 3 stroke??? that near gave me a stroke just reading that.lol

[curtisbyrne]

i know my kohler is 3. something so its a four stroke but is the brigs 18 a 4 or 2?