250R vs. 450R vs. YZF450
May 26, 2004 | 12:40 AM
#13
Pro Rider
Joined: Jan 2003
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250R vs. 450R vs. YZF450
Originally posted by: 1BAD250R
I don't know if I waould go as far as to get a 370 kit. I know two guys with a 330 kit and a friend with a 310 kit and the reliability is just not there. I only weigh 150lbs. so I really don't need a big bore kit to keep up with the new bikes but if I was going to do motor work I would just get the 265 Powervalve kit that all of the pro MX racers used to run before the new rules. They may only be a 265 but they can still rip!
I don't know if I waould go as far as to get a 370 kit. I know two guys with a 330 kit and a friend with a 310 kit and the reliability is just not there. I only weigh 150lbs. so I really don't need a big bore kit to keep up with the new bikes but if I was going to do motor work I would just get the 265 Powervalve kit that all of the pro MX racers used to run before the new rules. They may only be a 265 but they can still rip!
May 26, 2004 | 01:36 AM
#14
Pro Rider
Joined: Nov 2003
Posts: 741
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250R vs. 450R vs. YZF450
Far back? I'm not sure. Any decent 330 kit (eg, ESR) puts out around 62 rwhp plus
the R would be 30 lbs lighter or more. I'm not doubting the 508 or anything, I'm just saying
that it would have to be one hell of a 508 to beat that kind of a 330....maybe it is, I dont know.
Who has the specs on the 508?
the R would be 30 lbs lighter or more. I'm not doubting the 508 or anything, I'm just saying
that it would have to be one hell of a 508 to beat that kind of a 330....maybe it is, I dont know.
Who has the specs on the 508?
May 26, 2004 | 01:56 AM
#15
Range Rover
Joined: Feb 2004
Posts: 137
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250R vs. 450R vs. YZF450
dragracer, your claiming that with bolt ons your 250r can run with a 450r with similar bolt ons? Come on guy I'm not tryin to be an a** but your dreamin unless your talkin about a bolt on big bore kit or head porting. My stock 450r will run with piped, carb'd, etc. Banshees. In order for a 250r to do that they've gotta be powervalved/big bored/ & or ported. I'm not flaming as I owned a 250r previously and still love them but in my experience in the sand it isnt even a competition. I raced several quads this past week and the only things beating me were Banshees and a 686 raptor.
Hey pimp do you know any1 looking for some g3's? I havwe a new set never installed and want to get rid of them.
Hey pimp do you know any1 looking for some g3's? I havwe a new set never installed and want to get rid of them.
May 26, 2004 | 02:03 AM
#17
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Joined: Apr 2004
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250R vs. 450R vs. YZF450
Lateralus, who knows maybe the work done to my friends 250R was not by a professional but I can say that these three guys have had some trouble. I also noticed from your pics that you ride in the dunes which in my opinion can be a little less harsh on a motor than the Florida swamps and brush we race XC in.
May 26, 2004 | 02:10 AM
#18
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Joined: Jun 2001
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250R vs. 450R vs. YZF450
I have an ESR 310 and I'm in florida, the only problem I've ever had with it was a seizure caused by the airfilter falling off and me running the quad wide open for abour 15 minutes. I'm actaully amazed it ran that long without a filter. You know the first thing I did was buy the airbox support rings and I didn't have that problem anymore.
May 26, 2004 | 02:23 AM
#19
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250R vs. 450R vs. YZF450
I had a similar problem only luckily my carb's jets got all gunked up and starved the motor of fuel before it could do any damage. My filter fell off while riding in a dusty park and I actually kept running the whole day as I didn't know it had happend.
