250r to run with a 450??

[waddle]

what size cylinder would it take on a 250r to keep up with or beat one of the new 450s. A 310 kit possibly?? im tired of hearing about how fast my friends 450 is.

[TRX370R]

Depending on how much is done to the 450 I would think that a 310 would easily beat a stock/slightly modded 450

[rs169300]

I can outrun both stock 450's with a 265.

[baker250r]

Originally posted by rs169300
I can outrun both stock 450's with a 265.

dido :macho

[pharit]

my 88 can get it done

[bananas]

I couldn't catch 450r and i tryed 8 times.. The best i could was 3 bike leghts. Both atv's are stock motors but 450r had some work..
When that 450 hit 3rd is where i lost. Every time!!!!! Sucks:eek2:

[baker250r]

well, first off, are we talking a drag or on a track? on a track u would kill him if u know how to ride it. and drags are for old people! :D

[pharit]

Originally posted by pharit
my 88 can get it done

Let me re phrase that

i know three peope with 450R's

One is a 04 and i can wax him in a drag race all day long just cause he don;t really know how to drag that well.

the other two live to drag both 05's both guy other 150 lbs one with the HRC cam and white brothes slip on and jet kit the other with a full yosh pipe and jet kit.

Now the two 05's it just depends on who gets the launch.

My 88 will top out faster than the 450r's will .

[rs169300]

From a dead stop the 450's will pull hard off the line. But when you are talking about 3rd gear or higher the two stroke will take off. Plus I will top out atleast 5 mph higher.

[baker250r]

it all just comes down to the same thing. they are fairly even cept 1 is 4 and 1 is 2 stroke. it all just depends on what application its for.... aka XC, MX, or trailin. it just depends on if u know how to ride it or not. i personaly would rather race a dinosaur...... its guys like us that make racin fun for all the 4 stroke guys.

[mdl76]

im courious about the horsepower rating. the 450 puts out 43 stock? and the 250 30 stock? the 450 weights bout 20lbs more. if these numbers are correct, then the 450 puts out 13 more horse(17 with the hrc kit, but now where not stock). thats like 35 - 40 percent more power. it seems like the 450 would be a lot faster stock for stock, but from what im hearing that is not the case? is the power curse a lot better with the 250? im just lost. or was the 250 hp measured from the rear wheel and the 450 at the crank. Could the torque on the 250 be more than the 450?

but now talking mods, is it not true that is much cheaper to get power out of a 2 than a 4?

[rs169300]

That 43 stock must be at the crank. The 450r should be putting out 33-35 stock.

[NEPA250R]

My stock 1987 250R peaked at 26 hp at 7000 RPM's along with 19.5 ft/lbs. of torque. This was measured on a Factory Pro EC997a eddy current dynamometer. A stock 450R peaked at 27.8 hp at 7000 RPM's along with 22.2 ft/lbs. at 6000 RPM's. These were done on the same dyno, not on the same day, and I'm uncertain about the conditions, so take it for what it's worth. If the numbers look low to anyone, check out Factory Pro's website, and that should explain it.

[RedRacer44]

I had a 310 full MX race 'R in the past for 2 seasons (2002,2003) and I loved the bike. 2-strokes are still a blast to ride. The new 4-strokes are hard to beat though. I have a 450R now that i've built for MX and it rips! I'm a lot faster on the 4-stroke than I was on the 310, but thats just me. My 310 was pumping out 54HP and it was a screamer. I could pull holeshots all day long but after about 2 or 3 laps, depending on track size, I was burnt. The 450 is just easier to ride for me and I can ride almost 10 laps at full speed.

As far as what you need to do to beat a 450R, depends on your riding ability and what you plan to do like some of these other guys say. On a MX track, a mildly built 250R can still run with and even beat a 450 if the rider knows what he's doing. In a drag race, from my personal experience.....when I just had pipe/filter/jetting, I was walking away from every 250R except for the "bigger" big bores (350s, 370s). Now with my motor work, I beat the big bores in a drag race by maybe a bike length or two but then again, they could turn right around and beat me by a bike length or two.

[nacs400ex]

Stick with the "old" but legendary 250r if you want a fast quad. For the price, you cant make much beat a 250r, except maybe a banshee. My 265 will take CT310's, 450r's shouldnt be a problem.

Id rather own a bike built to perform its best, rather then owning a quad with a Detuned crf450 motor, jammed into a 400ex frame more less.

Anything done right over 265 should take the new 450's.

Many times I am asked why I run the "outdated" R and why I dont have a 450. Well for one if it was outdated, it would have parts that are outdated, and it would be insuperior to the new technology. Seems to me all the companies are trying to sell 250r style parts for the new bikes. (chain adjustment) not many parts have changed since 1986 to 2004.

I will agree that 2-strokes wear you out quicker. But Im ok with that.

[crazyracer250r]

i have a 250r with a stock motor but a curtis sparks pipe beadlocks air scoops axis shocks fullbore plastic roll design front end roll swingarm lonestar axel and whoop ever 450 ive raced at the track but lose by about 100 foot in a five hundred foot drag basiclily if you can ride better that the other guy on a track you have the advantage

[Eddiesanders250]

Look, the 450s are definately fast. They are the only competition to the 250r on the track. The 250s had their time to be on top, now they could be a step below. The 450s are the only quads in 20 years that could even come close to 250R. I have an 87 250R with small mods, (air filter, pipe, jet kit, AND 38MM carb). Now all these mods cast me about a grand, and i bought my bike for 4 grand. Thats only $5000, and i can keep up with the 450s pretty good the only thing is the 450's cost around $7000. Thats why i have a 250R. more for your money!!!

Long live the r.

[dober250R]

i love this thread!!! long live the 250R!!!!! I haven't had a chance to race any 450r's yet, my big bro is gettin one, so we'll have to throw down and check this out for ourselves!! I'm pretty sure i'm gonna win.

[RedRacer44]

Very well put there Eddie. I think that is the best thing said about the 250R vs. 450s controversy. I think that Jeremiah Jones could still beat 90% of the pro class today on his 250R, easily. Sure woulda liked to seen him on the 450R though instead of the Yamaha and now the Suzuki. But I'm glad to see him get a factory deal, being the last 250R Pro rider to win a championship!

[nacs400ex]

Originally posted by Eddiesanders250
Look, the 450s are definately fast. They are the only competition to the 250r on the track. The 250s had their time to be on top, now they could be a step below. The 450s are the only quads in 20 years that could even come close to 250R.


I agree the 450's are fast, but the new breed of 4-strokes alone was not enough to knock the R down.

The only thing that knocked the R down from #1 position was the rule changing and new classes.

The fact that pro's will not be paid to ride a 19 year old machine, why? because nobodies going to buy a brand new quad from Honda or Yamaha, when an older race-ready one at half the price can do it too.

So then when the amateur riders see that their top pros are riding on new 450's thats what they will opt for when the time comes.

The 250r is the most versatile quad ever built, you can do anything with them! The parts available for them is unbelievable; parts are still being developed for the 19 year old machine to this day. 2-smokes are a hell of a lot easier to work on too. So why switch ?

BOTH the 250r and 450r can get the job done, but its personal preference when it boils down to it. 2-stroke V.S. 4-stroke.