Okay guru's i need some info.... i have a sport 400 and my buddy has a scrambler 500. Both 2 wheel drive. Now IF they were still stock how would a drag race between the two go?

the reason i ask is because i have done some modifications to my sport and right now i get a nose on him from take off and thats it... we stay that way the rest of the race. So i was wondering if i should be getting more then dead even or if thats what i should expect.

if your interested i have Rick Ritter's stage 1 kit with a black orange primary, boysen power reeds, and thats about it.

thanks guys!!

Form what I've seen the 400's 2-strokes are always faster than the 500's 4-strokes int he polaris line of atv's. What rpm are you turning with your 400 does it seem to run good? Is the 500 stk. What else is done to your quad?

Don't know about it being faster, but it definitely should be quicker. I think Speederx is right, you need a little clutch tuning.

Do a search on that, and look for anything ftwflh has posted. He knows the Polaris clutching inside out.

i guess my main question is just that with both quads stock, how would a race go.... i'm trying to use that as a benchmark.

I would thnk you'd get him off the line, then it would even out. A lot depends on how far the race is.

ok.... well.... then my clutching must be bad cause thats what happens now.... i've got a uni filter, boysen power reeds, rick ritter midrange pipe and his silencer to match, and a 270 main jet on the carb. Right now i'm running the clutch stock except the primary spring is a black orange...

so would that be a good spring or should i change it.... rick mentioned using an orange, but i dont want the engage rpm to be to high.

just as an F.Y.I. guys, it's my scrammy he's competing against, it's 2x4 and is all stock, save for the parts below (uni filter and aluminum wheels from it being the X model.) also i took out the Dalton Black-White spring, and as the race stands right now, he out-launched me last time (maybe luck, maybe more horse, dunno only ran once,) and after he pulled the two feet ahead from that, we were dead even the rest of the way. So you know, the place we were racing is just long enough for my Predator to touch 4th before i have to shut down, so maybe.... 100yrds? anyway, hope this info helps, it was me who said the thing should have more... am i wrong? thanks!

I dropped you a pm.Sounds like you need to get the engagment up to get past the dead spot.
You may be jetted a little rich too.Check your plug and if it is black drop a jet size and check again.You may try dropping your needleclip one notch too.But keep an eye on your plug every so often on your next few rides.

It depends. I thought a 400 would take a 500 off the start and jsut keep its distance. But when a couple of friends of mine dragged, one with a trailblazer 400 and the other with a 2005 scrambler 500, both in mint condition, the 500 took the lead right away and just built a lead of about 5 bike lengths form there. Plus a piped 400 will benefit alot more then a 500 piped will. Get some decent clutching on that thing and you'll walk all over that 500, seen it myself.

They should be fairly even with the 400 a little faster.
With a pipe and proper clutching for that pipe it should be no comparison the 400 will walk away form the 500.You need to get the right clutching to match the power band of the new pipe.

Jim


Polaris Scrambler 500- Totally Goose Happy Quad
December 14, 1999

https://atvconnection.com/editor/rev...ler/review.htm

ATV Staff Report

Scrambler History

Introduced in the early '90's, the 400 Scrambler was Polaris' perennial top of the line sport machine. It remained there until California began laying the heat on two-strokes in 1996.

Introduced into their '97 lineup, the Scrambler 500 was Polaris' ecologically-minded four-stroke alternative to their Scrambler 400 two-stroke. Because the two-stroke 400 still smoked it in drag races, first year sales of the 500 thumper weren't up to expectations.

Polaris engineers went back to the drawing board and installed major upgrades for the '98 model year. A hotter cam and crank, and a new 40mm Mikuni carburetor were just some of the improvements. They called the revamped engine the High Output (HO) 500. The all-new HO '98 Scrambler 500 developed 20% more power and was now dead even in drag races with the two-stroke 400. Virtually identical (except for the engines of course), both of these machines remain top dogs for fastest out of the crate 4x4's.