Horse Power

23642 Views 47 Replies 21 Participants Last post by Baxter, Feb 13, 2010

posterboy12

Discussion Starter · Mar 30, 2008

This was found on another forum................... Thought it would be great to share if you have not seen it yet.

Heres a list of some comparable hp numbers.

08 250ex: 16.8hp
08 300ex: 22.1hp
08 400ex: 34.2hp
08 450r: 42.6hp
08 700XX: 53hp
08 KFX450r:42.1
08 KFX700:48.8
08 Z400: 36.6hp
08 Ltr450: 41.6hp
08 Raptor 250: 18.8
08 YFZ450: 38.6hp
08 Raptor700r: 46.9hp

Remarkably, it is making at least 10.4 more hp than any 450 and 7.1 more hp than than Raptor 700r while a modest 4.5hp more than the automatic KFX700 with the mighty V-Twin.

The numbers of from the California Environmental Protection Agency.

http://www.arb.ca.gov/msprog/onroad/cer ... 8/2008.php

1 - 20 of 48 Posts

gus700

· #2 · Mar 30, 2008

That web site is great. I think atv and motorcycle makers should have to publish their Hp and torque #'s on a "window sticker" just like the auto makers.

They all say things like class leading performance when advertising their quad or bike but very few will proudly spill the beans on actual power. Too often you have to play detective to find that out.

Of all the quads that you chose to list, you some how seem to have left out the only other IRS sport quad.
The 525 is rated for 49.6 hp. More hp than the Rap and the same weight. The 525 is more quad than I ever would have guessed. That first shoot out will be interesting to say the least.

VelociRaptor

· #3 · Aug 11, 2008

The 46.9 is at the crank for the 700 Raptor too, they normally get 40 or so at the tires stock.

TRX_Sixpac_700xx

· #4 · Jan 8, 2009

That sure is the important hp number. What is all that hp worth unless it makes it to the point of friction (tires to ground). I don't remember exactly but I remember hearing the 700xx is about 43 hp at the tires. Obviously, you can mod your quad to get more of the engine hp to the tires but for stock comparisons it is the hp at the tires that makes the difference. Also, the old weight/hp ratio. I've heard these results before but I've completely forgot these numbers. I believe at least between the rappy and honda they were very close and the outlaw most likely is a little higher. All sweet quads.

vfm2010

· #5 · Jan 9, 2009 (Edited)

Bo, In your quest for more horsepower have you found any specific types or brands of lubricants for transmissions and/or chains that will deliver measurable results at the wheels? (in other words reducing parasitic power loss)

scuzz

· #6 · Jan 9, 2009

If we didn't have wet clutches or if we separate engine oil from tranny oil we could go synthetic. You can see a visible infrared temperature difference on a motorcycle engine with synthetic vs. regular oil.

Here's some interesting reading but wouldn't totally apply to our engines. (damn wet clutch)

http://www.syntheticwarehouse.com/Amsoil_20W50_Synthetic_Motorcycle_Oil.htm

smo0oth1

· #7 · Jan 9, 2009

The article says it can be used with wet clutch systems... I believe the Honda oil I purchased was synthetic also

scuzz

· #8 · Jan 9, 2009

I guess today reading > me

DblXX

· #9 · Jan 10, 2009

im not 100% sure about synthetic oil in a wet clutch system either because when i had my ninja i asked about synthetic oil and they say not to use it in a wet clutch system untill you get a lot of time on the motor in this case 15k miles or more. if your really worried about engine oil than just change it more often, i doubt i will ever run synthetic oil in my machine.

OzLinc

· #10 · Jan 10, 2009 (Edited)

Like everything you can get many grades and forms of synthetic oil. Most good syth oils are just fine for wet clutches - it will say "suitable for wet type clutchs" somewhere on the front.

If it doesn't say "suitable for wet type clutchs" then don't buy it.

Synthetic oils that are not suitable have an additive called XXXXX ......can't remember.......but is usually listed on the cover as "friction modifiers "........this is the stuff you want to avoid.

Edit: I can remember, "molly" additive.....it's actually got a realy long name but most refer to it as molly.

I use a "full synthetic" oil but most aren't; the companies can say it's synthetic even if it's a blend of the two.

I use Motul 300V Factory Line 15w/50.......expensive stuff. Engine runs better, cooler & longer.

Linc

See less See more

hpfreek

· #11 · Jan 10, 2009

do not use oils that contain moly

LOMO700XX

· #12 · Dec 29, 2009

i think the gas gas wild hp 450 makes like 53 or 54 hp

RemingtonSteel

· #13 · Dec 29, 2009

wow those seem high im puting around 45 to the ground with the big three.

09RappySE

· #14 · Dec 29, 2009

RemingtonSteel said:
wow those seem high im puting around 45 to the ground with the big three.

Don't get stuck on dyno numbers....dyno's vary and so do the numbers..too many variables involved, best thing is to get a base number and stick with the same dyno so you know what you get from each mod.

RPM

· #15 · Dec 29, 2009

Plus, those numbers are as sold numbers and in many cases the motors are all choked down. There is lots of FREE HP in all quads. Unfortunately, they also don't give HP compared to weight. A 45HP quad weighing in at 360lbs is going to have an advantage over a 50HP quad weighing in at over 500lbs. Trust me, I know.

VelociRaptor

· #16 · Dec 29, 2009

vfm2010 said:
Bo, In your quest for more horsepower have you found any specific types or brands of lubricants for transmissions and/or chains that will deliver measurable results at the wheels? (in other words reducing parasitic power loss)

I use Yamalube and chainwax. Never done any dyno testing on it though.

LOMO700XX

· #17 · Dec 30, 2009

That would be an interesting dyno test

phucknutz

· #18 · Jan 28, 2010

HP #'s from that list are crank hp, look at the dyno sheets we have posted. That is real HP but pay attention to the torque, that is the real tell all #. I am at 56 at the rear wheels as of today. The bike is headed back to EHS for some more work. Throttle body and some other stuff to try, we will keep you posted.

xx700xx

· #19 · Jan 28, 2010

phucknutz said:
HP #'s from that list are crank hp, look at the dyno sheets we have posted. That is real HP but pay attention to the torque, that is the real tell all #. I am at 56 at the rear wheels as of today. The bike is headed back to EHS for some more work. Throttle body and some other stuff to try, we will keep you posted.

Wow! Whats it like riding a XX with that much power? I want to upgrade so damn bad but I promised myself I'd pay it off first. Bummer!:disgust:

mfrantz

· #20 · Jan 28, 2010

shoot, i wish they had let me finance mine, i'd have so much money left over for goodies. Instead mine was a splurge thing and just went and got it without thinking really about mods, or anything.

1 - 20 of 48 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.