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Old 09-29-2011, 04:37 PM   #1
biker3321
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Default 250cc

ok i want to squeeze the most power out of a 250cc 4 stroke for it to be able to beat a 500cc 4 stroke that has 1 size bigger jets. can anyone give advice
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Old 09-29-2011, 05:18 PM   #2
seruzawa
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Never happen.
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Old 09-29-2011, 05:24 PM   #3
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Pour sand in the 500's gas tank?
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Old 09-29-2011, 06:03 PM   #4
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Sounds like the old VW commercial for the scirocco I think. "There are two ways to make a vw faster (cut to them dropping a beetle out of a plane) or to build a new VW."

I think the first option will work best in your quest.
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Old 09-29-2011, 06:24 PM   #5
biker3321
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just to get something strait i'm talking about a 250cc 4 stroke engine on a motorcycle. what i want is some input on how to boost the power in the engine such as; push rods, cam shaft, exhaust. please some helpful advice nothing about cars
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Old 09-30-2011, 08:17 AM   #6
trenttheuncatchable
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We know what you are asking. It's kind of a silly question. You can do all that stuff, but if the 500 is a similar motor, it'll still beat the 250.
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Old 09-30-2011, 08:43 AM   #7
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Well, unless it's the most-loved, most-modified, most-sold 250 (or any size bike, for that matter) in the WORLD, with an absolutely ENORMOUS aftermarket, you're pretty-much stuck at Doodley-Squat you can do with it.

But, if Money-Is-No-Object, you can do a couple of things.

#1: Overbore. The only replacement for displacement is..... More Displacement.

#2: Oversize valves. Get more IN, you'll get more OUT of it.

#3: Carbs, porting, cams. Got the above? You'll need modifications/replacement to these to get the most out of it.

#4: EVERYBODY'S Favourite happy-time-gas; Nitrous Oxide (Nawz, Yo.)

#5: Remember #1 above? Skip that, if you've got BOOST.

#6: A street-sweeper and Oil-Dry; To follow-along in your trail, and pick up the pieces when the engine destroys itself.
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