raptor dyno numbers

[tayyo789]

just wondering whats out there. ive got a guy telling me his new 700 with the big 3 got 55hp and 46 ft/lbs, and im calling bs. and if your just going to tell me the raptor is the best thing since the internal combustion engine, dont reply. i have plenty of copies of dirtwheels if i wanted to read that. i want facts, raw numbers.

[400exrider707]

What's the big 3? 55hp out of a modded 700 cc motor doesn't impress me anymore :confused:

[tayyo789]

exhaust, intake, fuel controller. basically the guy cant change his own oil and thinks he can beat my hybrid.

The raptor 700 put out some insane hp. if that 650 hybrid is a pretty stock motor id say the raptor is going to win. and 55 hp is fairly easy for them

[madskrillz2]

I don't see how motors that big don't put out huge numbers. I mean a 450 with basic motor work will put out 50-55 hp.

[tayyo789]

every dyno ive seen has lower numbers than what you guys ae thinking. i have basic mods on my 650 engine, and i consistently beat a yfz with a 480 kit. you arent going to get over 10 horsepower from simple bolt on mods. you guys can tell me what you want, but until i see proof of a lightly modded 700 getting those high of nubers on more than one dyno, my opinion stays

if you do some searching on google you will find tons of dynos. all making 52+ hp on the big 3. Most 450s put 47hp out on a big 3

http://www.atvrideronline.com/features/100_0603_2006_yamaha_raptor_700r_atv_exhaust_pipes/index.html

If you google about the yfz 480 kits they dont put out much hp.

Go to yfztech.com and ask them and look around at dynos

[Regular_Joe]

(this is in response to madskrillz2)

Its all about the engines design characteristics.

A Rappy is going to have a much flatter torque curve than that of a 450 class machine. This is why its more of a trail oriented quad, where no matter what rpm, there is lots of power on tap. Typically a 450 class machine will be revved up more, so having power more focused in the upper rpm range is ok.

This is like comparing my SV650 and 600SS. The SS has 2x the HP of the SV, but at the expense of a very wild torque curve. The SV has a flat torque curve from 2.5k all the way to 10k. Any rpm in that range and I have tons of power, and always at the same predictable level. The SS has a wild torque curve. Anything below 5k and the bike is bogging, around 8k it is coming alive, and above that its balls out. Basically unless you keep this bike revved up to 8k and over or its a dog. Two different machines with very different engine characteristics.

[tayyo789]

well maybe ive always been thinking of horsepower as being less than it actually is on a dyno. ive always thought those numbers would exist at the crank, but not at the wheels. im going to take my hybrid to the dyno soon to put things in perspective, because theres no way i can win drags by so much without having more power than i thought i had. i always expected my hybrid to be in the mid 60s but raptors with the big 3 cant keep up even for 20 yards. i'll test mine and maybe that will put things in perspective for me.

[416exfreak]

Originally posted by madskrillz2
I don't see how motors that big don't put out huge numbers. I mean a 450 with basic motor work will put out 50-55 hp.

My dad had rocket factory build him a 720 stroker engine. They dynoed it at 68hp/63ft lbs.

I dont have a way to copy the dyno sheet, but a 700r makes power almost like a banshee does when it comes to modding them. Just doing the big 3 to my dad 06, he was running side by side with ported shee's and 13:1 450's.. :chinese:

[madskrillz2]

Originally posted by Regular_Joe
(this is in response to madskrillz2)

Its all about the engines design characteristics.

A Rappy is going to have a much flatter torque curve than that of a 450 class machine. This is why its more of a trail oriented quad, where no matter what rpm, there is lots of power on tap. Typically a 450 class machine will be revved up more, so having power more focused in the upper rpm range is ok.

This is like comparing my SV650 and 600SS. The SS has 2x the HP of the SV, but at the expense of a very wild torque curve. The SV has a flat torque curve from 2.5k all the way to 10k. Any rpm in that range and I have tons of power, and always at the same predictable level. The SS has a wild torque curve. Anything below 5k and the bike is bogging, around 8k it is coming alive, and above that its balls out. Basically unless you keep this bike revved up to 8k and over or its a dog. Two different machines with very different engine characteristics.

I see what you're saying. I'd like to see a full on race oriented 700 even though there is no market for one.

[416exfreak]

Have a looksy!:devil:

http://www.teamrocketfactory.com/

[tayyo789]

ive got another buddy thats got a 727 stroker and he claims 75 hp but im whoopin up on him too. everybody seems to claim horsepower like they claim top speed these days. when i get dyno'd i'll bring back the results to this thread for a comparison so we can see whats going on.

there a raptor on yfztech putting 90+ hp

813 running on meth. all motor


http://i18.photobucket.com/albums/b112/brucelef/813dyno.jpg

[tayyo789]

thats understandable with bores and strokes, but my point was this guy wont do any of those because he saw my 440ex blow gaskets all the time so he has bore-phobia. he thinks he can get these kinds of numbers with stock bore and stroke. i should have specified this earlier

[Fred55]

Your acceleration comes from the torque! They probably do have more hp than you but you win because I'm going to bet that your 650 revs slower and puts the power to the ground better.

[tayyo789]

weight is also a deciding factor. my 650 weighs less than my 400ex. however im not small at 250, but the guy on the raptor is about the same

[400exrider707]

Yes I believe it can put down 55hp

But to actually win a race, there are so many different variables to say what is what. I've seen bone stock 300ex's take piped 400ex's before... its all about traction and driver skill.

You can do a lot of things to change dyno numbers too, including but not limited to:

Tires (slicks, knobbies, and even then the compound of the slicks will alter things)
Jetting
Elevation
You can remove the rear brake caliper for less drag
chain length (longer swinger, longer chain, less power)
Fuels
What kind/type of dyno. I've seen some of those mobile dynos stuffed inside a small enclosed trailer, and it's been proven some of those dont provide enough cubic feet of air to supply the motor properly...

Just some things to think about.

http://kbratv.com/Tests_and_Comparisons.html

[tayyo789]

Originally posted by Nova
http://kbratv.com/Tests_and_Comparisons.html

see, those are the numbers i expect to see. thats why i brought this up