2013 ATV Horsepower Chart - Yamaha Grizzly ATV Forum
General Discussion Welcome to General Discussion. This is a general forum where we talk about anything that is NON-GRIZZLY related. Please post in the appropriate forum that relates (we have engine forums, tire forums, accessory forums...and all the others too) to your topic. This way when someone (including us) comes here to look for answers, it will be a lot easier to find info. If you are posting something in general that you cant find a forum for, then this is the place to put it. Thanks for helping us try to get the info organized.

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post #1 of 34 Old 08-21-2012, 03:27 PM Thread Starter
 
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2013 ATV Horsepower Chart

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post #2 of 34 Old 08-21-2012, 04:24 PM
 
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King quad numbers are right up there with the v-twins, yamaha really needs to step it up.

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post #3 of 34 Old 08-21-2012, 04:36 PM
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Brute numbers are very deceiving. Those suckers put out very good power.
 
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post #4 of 34 Old 08-21-2012, 04:46 PM
 
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This is disturbing. To think my buddy's 550 Sportsman has more H.P. than my Grizzly, well this is outrageous!!!!!! Well at least my A-Arm didn't break. I still love these pictures.



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post #5 of 34 Old 08-21-2012, 04:51 PM
 
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post #6 of 34 Old 08-21-2012, 04:52 PM
 
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Oh well, It's a lot more fun when the under dog in hp can make it through the mud hole while the heavier, longer bikes are laying frame.

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post #7 of 34 Old 08-21-2012, 04:58 PM
 
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Quote:
Originally Posted by LOCOGRINGO View Post
Oh well, It's a lot more fun when the under dog in hp can make it through the mud hole while the heavier, longer bikes are laying frame.
you keep telling yourself that....more hp=more fun
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post #8 of 34 Old 08-21-2012, 06:00 PM
 
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Quote:
Originally Posted by jesus_is_lord View Post
you keep telling yourself that....more hp=more fun
lol, you keep telling yourself that! LOL, when your hp spins to dig down and lay frame. hehe, just messin' with ya!

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post #9 of 34 Old 08-21-2012, 07:35 PM
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Brute numbers are very deceiving. Those suckers put out very good power.
My buddy just bought a 12' and that thing moves. It almost feels instant to 30mph. I was hanging over the front and could not keep that thing down from a dead stop.
 
post #10 of 34 Old 08-21-2012, 09:15 PM
 
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Does any one know the HP of a stock 660?

TO BOLDLY THROW MUD NO MAN HAS THROWN BEFORE!
660 SS member
MUDIFY-verb. To modify for the purpose of increasing mud performance.
OL' SCRAPPY
2004 660Red now
MUDIFICATIONS
Bored to 686
Uni Air Filter
Mudbuster Cam
JE 10.75:1 Piston
Mild Head Port
DynoJet Needle and Spring
4 450 Wieghts
1.5mm Shim
EPI Purple Spring
500 RPM Stall Springs
Monster Mayhems/HD2s
Custom-
-3" Snorkels
-Exhaust with Snorkel
-Radiator Relocate
-Bumpers and Skids
-1" Lift
Warn 2500lb. winch
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post #11 of 34 Old 08-21-2012, 09:32 PM
 
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I think they are around 45

2008 grizzly 700
26" bighorn OG's on ss212 black wheels
rigid industries 10" sr series driving light
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jbs sheave,18gram weights,purple secondary
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post #12 of 34 Old 08-21-2012, 09:40 PM
 
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I was thinking like 40-42 or some thing like that, but I was just guessing. It looks like you got similar engine mods to mine, except I have a Mudbuster and home made exaust. Do you have any idea how much your making now?

TO BOLDLY THROW MUD NO MAN HAS THROWN BEFORE!
660 SS member
MUDIFY-verb. To modify for the purpose of increasing mud performance.
OL' SCRAPPY
2004 660Red now
MUDIFICATIONS
Bored to 686
Uni Air Filter
Mudbuster Cam
JE 10.75:1 Piston
Mild Head Port
DynoJet Needle and Spring
4 450 Wieghts
1.5mm Shim
EPI Purple Spring
500 RPM Stall Springs
Monster Mayhems/HD2s
Custom-
-3" Snorkels
-Exhaust with Snorkel
-Radiator Relocate
-Bumpers and Skids
-1" Lift
Warn 2500lb. winch
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post #13 of 34 Old 08-21-2012, 09:43 PM
 
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Quote:
Originally Posted by spaceman78 View Post
Does any one know the HP of a stock 660?
40.9

RED 2002 Grizzly 660, 28" Gorilla Silverbacks, Wiseco 11:1 Piston, HotCams Stage 1 Raptor Cam, Raptor Valve Springs, DizGrizz Serious Air Filter Mod HERE, K&N Air Filter, Custom Rad Relocate, 1mm Shim, 660 Mega-Air Snorkels HERE,Powermadd Handguards, ODI Rogue Grips.
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post #14 of 34 Old 08-21-2012, 09:47 PM
 
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Thanks. that right in the area I was thinking.

TO BOLDLY THROW MUD NO MAN HAS THROWN BEFORE!
660 SS member
MUDIFY-verb. To modify for the purpose of increasing mud performance.
OL' SCRAPPY
2004 660Red now
MUDIFICATIONS
Bored to 686
Uni Air Filter
Mudbuster Cam
JE 10.75:1 Piston
Mild Head Port
DynoJet Needle and Spring
4 450 Wieghts
1.5mm Shim
EPI Purple Spring
500 RPM Stall Springs
Monster Mayhems/HD2s
Custom-
-3" Snorkels
-Exhaust with Snorkel
-Radiator Relocate
-Bumpers and Skids
-1" Lift
Warn 2500lb. winch
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post #15 of 34 Old 08-22-2012, 12:01 AM
 
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all these numbers are at the crank, not the wheels...might look a little different at the wheels as surely some are more efficient in putting down the power then others? I do know that the Brute's rating is very deceiving...it has an extremely strong low and mid range imo..it does die off up top compared to the xp or outy though
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