2 or 4 stroke...whats the difference? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 04-19-2001, 12:54 PM
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2 or 4 stroke...whats the difference?

I know the mechanical difference, but is the difference between the ride type an power..stuff like that? TIA

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post #2 of (permalink) Old 04-19-2001, 01:31 PM
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Re: 2 or 4 stroke...whats the difference?

a 4 stroke may go as fast as a 2 stroke in some cases, but it usually takes it longer to get to the same speed and you need almost double the cc's to do it. a 2 stroke is a higher, faster reving engine. you can get more horsepower out of a smaller engine with a 2 stroke. also, the power curves are totally different, with a 4 strokes power curve being stronger on the bottem and a 2 strokes power curve being stronger on the top.

at least thats what i think and thats just my experiences, and i may be wrong. if i am someone please correct me [img]/wwwthreads_images/icons/smile.gif[/img]

Chris [img]/wwwthreads_images/icons/cool.gif[/img]
<font color=blue>'93 Yamaha Banshee (Trinity Stage IV)
'00 Yamaha Blaster</font color=blue>
post #3 of (permalink) Old 04-19-2001, 02:02 PM
 
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Re: 2 or 4 stroke...whats the difference?

that is about the basics...

2 stroke power band is the key...a 4 stroke is more evenly powered...

much of it will depend on what you are looking for...I LOVE the 2 stroke...

but the 4 stroke is pretty awesome too...


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post #4 of (permalink) Old 04-19-2001, 10:48 PM
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Re: 2 or 4 stroke...whats the difference?

I heard 2-strokes have to be rebuilt more than 4-strokes. Is this true or just a rumor? and why?

post #5 of (permalink) Old 04-19-2001, 11:00 PM
 
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Re: 2 or 4 stroke...whats the difference?

they rev faster so they wear more and they run hotter so the wear more

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post #6 of (permalink) Old 04-20-2001, 12:06 AM
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Re: 2 or 4 stroke...whats the difference?

i wouild have to say a 4 is better in a non-race quad.

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post #7 of (permalink) Old 04-20-2001, 10:43 AM
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Re: 2 or 4 stroke...whats the difference?

the four stroke has a very easy to ride power band that has awsome grunt down low and its very smooth in power on up. the 2 stroke will not go anywhere fast at low throttle but as soon as you hit the power band hang on .

post #8 of (permalink) Old 04-20-2001, 01:03 PM
 
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Re: 2 or 4 stroke...whats the difference?

if you want a low maintainence motor go 4 stroke...

the 2 stroke motor is a maintainence motor...

if you compare them to women or girlfriends the 4 stroke is the ideal woman because u just ride and ride and do a lil and its happy and it dont mind riding slow
the 2stroke...u need to baby and baby and then ride hard and ride hard and ride hard...they are not extremely happy when ridden slowly...they tend to get tempermental...

as for rebuilds, it all depends on how religous u are as to your maintainence schedule and what you use. I have had a 2 stroke motor that I babied and put nothing but yamalube in the bottom and 2R for mixing changed the bottom end every ride(cuz we rode hard as hell) and was extrememly specific on the mix...didnt rebuild for 2 years+...the banshee i have now...i took the head off this last winter after beating the livin piss out of it (and i mean beating it)...everything was well within specs and smooth as a babies bottom...needless to say...I never rebuilt it and when I tried to start it this spring she popped right off and was happy to see me....

so u be the judge...I dont think you need to rebuild as often as many of these jokers do

I think they do it to play with their women....ehehehe




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post #9 of (permalink) Old 04-21-2001, 07:39 AM
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Re: 2 or 4 stroke...whats the difference?

Yes its true 2 strokes do need to be rebuilt more often, they are turning so many more revs, but they are a very simple motor to rebuild also.

post #10 of (permalink) Old 04-21-2001, 09:50 AM
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Re: 2 or 4 stroke...whats the difference?

You should learn on a 4 stroke as they are predictable in their behavior.

From what ive seen, if you are into sand dunes and wide open desert, high speed, 2 strokes are the way to go.

For more technical, wooded areas, trails, cruising, a 4 stroke is better suited. It can still do the sand and hi speed desert.

-cleartoy

Got sand?

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