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biker3321 · 09-29-2011, 03:37 PM

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

seruzawa · 09-29-2011, 04:18 PM

Never happen.

sarnali2 · 09-29-2011, 04:24 PM

Pour sand in the 500's gas tank?

12er · 09-29-2011, 05:03 PM

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.

biker3321 · 09-29-2011, 05:24 PM

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

trenttheuncatchable · 09-30-2011, 07:17 AM

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.

The_AirHawk · 09-30-2011, 07:43 AM

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.

09-30-2011, 07:43 AM	#7
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	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. __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now...

09-29-2011, 03:37 PM	#1
biker3321 Registered Member Join Date: Sep 2011 Posts: 2	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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09-29-2011, 04:18 PM	#2
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	Never happen. __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

09-29-2011, 04:24 PM	#3
sarnali2 Aging Cafe` Racer Join Date: Jun 2007 Location: Sittin' down by my window, lookin' at the rain. Posts: 8,132	Pour sand in the 500's gas tank? __________________ "Carpe` Throttelum -Loud Suits Save Lives" "All the BMW riders in the room, I want you to leave. Now. Out. "

09-29-2011, 05:03 PM	#4
12er Founding Member Join Date: Nov 2001 Location: SF Posts: 2,702	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.

09-29-2011, 05:24 PM	#5
biker3321 Registered Member Join Date: Sep 2011 Posts: 2	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

09-30-2011, 07:17 AM	#6
trenttheuncatchable Founding Member Join Date: Jun 2007 Posts: 834	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.