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Old 03-24-2011, 11:10 PM
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Default 2 stroke or four stroke choice

     

Alright I'm selling m 2001 cr125r but idk if I want a 250 2 stroke or 250f. Can anyone give me specs on both types such as maintenance, costs, riding styles, stuff like that. Anything will be appreciated.
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Old 03-24-2011, 11:19 PM
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2 stroke
pros: POWERFULL, easy to maintain, no valves to mess with, easier on parts, lighter, easier to work on and trouble shoot, depending on year, parts are cheap, fast, sound amazing, rebuilding top end is easy enough for someone whose never touched a wrench can pick up a manual and read it once and do it in an hour, last long if you take care of it
cons: gotta buy oil, gotta mix the oil, sometimes get lonely being faster and farther ahead then everyone else

4 stroke
pros: no mix gas, can be just as powerfull with twice the CC, quieter, more bottom end, torquey, gets better grip for acceleration
cons: usually behind the two stroke...,hard to do top end, alot can go wrong, alot of moving parts=slow down engine (unless lubed good), alot to adjust valves, valves can bend, valves can seize, cam can slip, running out of room to list... get the point? im a two stroke fanatic so im a bit biased but most of the new ppl on here are having problems with 4 strokes, not two strokes, however both can be just as good as the other, most of it is personal opinion.
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Old 03-24-2011, 11:52 PM
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thanks for the info man. Ye im leaning more towards two stroke especially after staying on twostrokemotocross.com all the time.
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Old 03-25-2011, 12:16 AM
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superCR125 -- did you say the four stroke was QUIETER!?! I think he's talking about a race model four stroke, not a trailbike.
Owen, if you're just playriding, woods riding or a beginning MXer, the two stroke might be a better choice. Much cheaper and easier to maintain, not to mention you work on them much less often. 250 two stroke is 10-15 pounds lighter than a 250 four stroke, and about 25 lbs lighter than a 450 four stroke.
Yes, a four stroke is easier to ride and you will probably cut marginally faster laptimes on it. If you're racing, 1-2 seconds a lap can be a big deal, and if you screw up a line or turn, then the four stroke will be more forgiving. They also get very hot if you are just putting around, which is hard on the engines.
For what it's worth, I just switched back to a two stroke 250 for playriding on tracks and occasionally racing. Sick of listening to the four stroke and also waiting for the next $1,200 rebuild. It feels like the clock is ticking every second you run the engine.... that's why they put hour meters on them. And for what it's worth, a two stroke 250 does in fact make more power than a four stroke 250 and will beat it in a straight line.
BUT
If I was going to start racing seriously again, I'd probably suck it up and buy another four stroke 450. Grr.

---------- Post added at 11:16 PM ---------- Previous post was at 11:06 PM ----------

Also -- check out this MXA shootout between a YZ250 and YZ250F. it does a great job at explaining the pros and cons:
http://motocrossactionmag.com/Main/N...ERSU-7117.aspx

Last edited by mark_swart; 03-25-2011 at 12:08 AM. Reason: addition
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Old 03-25-2011, 12:29 AM
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Quote:
Originally Posted by mark_swart View Post
superCR125 -- did you say the four stroke was QUIETER!?![/url]
hehe yea i guess thats wrong, well, just another pro off the list!! two stroke all the way bro
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Old 03-25-2011, 09:12 AM
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Thanks both for the info I think it just made my decision. Yes I am a beginning mx. I doubt ma be extremely serious w it I just like riding the track and occasional racing because of college. I'm pretty sure ima go with the two stroke because I just did a rebuil on my 2 strroke and it wasn't bad at all. I've heard about four stroke being rly pricy especially after destroying my last 250f.

---------- Post added at 10:12 AM ---------- Previous post was at 10:05 AM ----------

Thanks for all the info guys I believe I'll stay w the two stroke cause I just rebuilt the piston on my 125 and it wasn't bad at all. And I'm mainly a beg rider who races occasionaly due to college. One more question. What would be better a 125 or 250 two stroke I'm 5' 10" 160. Just so now confusion I'm selling my 125r cause it getting old and I don't have the money to put into and older bike and get it up to par like it should be.
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Old 03-25-2011, 10:32 AM
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If you were pushing your 125 to the limits expecting more and getting bored with that power then it's time to move up to a 250. No sense in buying another 125 if you were already pushing your old one to the limits. Just my $.02.
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Old 03-25-2011, 10:55 AM
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[/COLOR]Also -- check out this MXA shootout between a YZ250 and YZ250F. it does a great job at explaining the pros and cons:
YOU ASKED FOR IT! MOTOCROSS ACTION'S TWO-STROKE VERSUS FOUR-STROKE SHOOTOUT: YAMAHA YZ250 VERSUS YAMAHA YZ250F | News | Motocross Action Magazine[/QUOTE]

Dude thanks alot for the link it really helps.
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Old 03-25-2011, 08:00 PM
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Go with a 250 if you are racing, not a 125. The beauty, you can race that 250 two stroke with 48HP in the 250 class against a bunch of 250Fs with 38HP. You should be able to get awesome starts!
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