does a two stroke motorcycle engine tend to overheat more compared to other engines?

Question

more specifically two stroke's with contact points instead of CDI ones.

Answer 1

The amount of heat generated has nothing to do with the amount of cycles the piston makes before firing. It has everything to do with combustion chamber heat and the engines ability to dissipate that heat. Type of cooling (air, oil, liquid), cooling fin design (radial, square barrel), air flow to the fins/cooler/radiator, and the load on the engine have more effect on the operational temp than the ignition system would.

Oil in the mixture of a two stroke is purely for lubrication, not cooling. Powersports 2 strokes aren't more 'efficient' (when comparing unused to used fuel during the combustion process) than 4 strokes, if they were they wouldn't be under attack from the EPA. They are more 'efficient' when comparing hp/torque to displacment vs weight though.

Detroit Diesels 2 stroke engines have more in common with 4 stroke bike engines than a 'conventional' 2 stroke, using cams, valves and a conventional oiling system. The cooling systems on all diesel engines are more massive than a comparative gasoline engine because a diesel 'fires' using compression as opposed to a spark and as a result has to retain more cylinder heat in oder to operate. That additional heat needs to be removed from the other engine componets for reliabilty and longevity.

I think I see where your question comes from, as a Capacitive Discharge Ignition (CDI) fires more voltage, therefore a 'hotter' spark than an old fashioned point type one, so logic would make one tend to think that engine operating temps would be higher. But I doubt it. The overall efficiency of the engine would increase as well so the fuel charge is burned more evenly and cleanly.

Interesting question and thought though!!!

Answer 2

The 2-stroke engine fires twice as fast as a 4-stroke engine and so in theory generates twice as much heat. On the other hand it is less efficient and the extra fuel tends to cool the engine.

On balance however I expect the 2-stroke to generate a little more heat.

An interesting question. It would be interesting to see if some one has quantitative data.

Answer 3

A 2 stroke has twice as many power strokes as a 4 stroke but overheating is not an issue and points v cdi is not a factor

Answer 4

2 Stroke and four Stroke would desire to do with how the engine runs. 2 strokes hearth each revolution of the engine (the strokes are up/down). they are lots dirtier, louder, and make a greater helpful pitched sound. you besides would would desire to combination oil with the gas and do greater upkeep on the motor like changing the plugs greater in many cases. The benefit is two strokes are in many cases greater efficient for his or her length, despite if it particularly only concerns for small autos like scooters, airborne dirt and dirt motorcycles, and a few smaller race motorcycles. 4 strokes hearth each 2d revolution of the motor (the strokes are up/down/up/down). They run cleanser, smoother, and circulate way extra without upkeep. that's a no-brainer for a highway bike which you will in all probability experience daily or on long journeys. Any bike 400cc and bigger would be quicker than any automobile 0 to 60mph. that's particularly hassle-free to discover aspects for those 1980-ish jap motorcycles. i'm 6'4" and my first bike became a Honda 4 hundred custom. I had to interchange some issues like the snatch cable. The close by wrecking backyard had each little thing i mandatory for inexpensive. you're probable too massive for the Ninja 250 (maximum generic first bike). At your top, you're able to driving an older Honda 750. in case you circulate with a sparkling bike, the 750 cruisers are in many cases smaller physique and could no longer in high quality condition you, so an 1100 like a VStar would be ideal. be sure you take a seat on a bike and sense delicate in the previous making your determination.

Answer 5

As a matter of fact 2stroke engines are much more efficient than 4stroke engines. As you have implied 2stroke engines do run hotter and as why require oil mixtures withing the fuel or in the case of Diesel Engines (check out Detroit engines for heavy equipment) they require a sophysticated cooling system. In the end 2stroke engines heat up so much that cause expansions and allow oil from the system to enter the mixture, does not hurt the engine but can get pricey as the engine ages. I am not sure what you are refering to with CDI (cylinder Direct Injection?) in any case check out howstuffworks.com or wilpedia.com search for 2cycle and 4cycle engines and compare.

Answer 6

they dont. i race. they dont over heat.
-mx4life

Answer 7

yes....