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Discussion Starter #1
To anyone with the HRC kit installed. Do you have a problem bogging out in low rpm range? I was at the Oregon dunes last week and raced a few times. Everytime off the line, it would bog a little and then start screaming. I was getting bet off the line by a stock 450R(even though he was running a 12th front). Do you think if I uped the pilot it would get rid of this problem or messing with the clip on the needle. Thanks
 

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Turn you air fuel screw out about a half turn and see if that works. If not turn it a little more.
 

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I tried it half a turn all ready. I will have to try a little more in a few weeks. I just had knee surgery, from lifting weights, on Tuesday. Still relly sore and won't be able to ride (SUCKS).
 

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my kit runs like a top. i dont know what you problem could be o yeah ive also got a 13 front and 42 rear it has mad bottom end. i ride in really technical rough stuff and am rarley in top end.
 

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I heard that the hrc kit (cam) is a mid to top end cam because mine does that to but once u get it above lets say 3,000 rpm it starts to scream.
 

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What did you do with jetting? What pipe are you running? Airbox mods?

Are you rolling the throttle on and having problems or is it only when you launch from a start?

My first thought is jetting. Big bogs usually mean a lean condition. Sputtering usually is rich. Can you be more specific?
 

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yea i got a hmf pipe and i love it
 

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I just bought an 05 and installed the hrc kit. I am haveing the same problem launching,
it wants to bog. I have 185 mj, needle 3rd clip. It screams in mid to high range rpms, but seems like it falls on it face if you give it all the throttle at once. I have the pilot adjustment screw 2 1/2 turns out. If I roll on the throttle it seem ok. Crap I wish I could line this beast out.. What is the correct way to adj the pilot screw?
 

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Originally posted by freeride@Apr 29 2004, 12:36 AM
i would try a 13 tooth front sprocket. did you bog before the kit? i know i do
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A 13 tooth is NOT going to fix a fuel problem <_<

Originally posted by kingofdunes@May 27 2004, 03:50 PM
I heard that the hrc kit (cam) is a mid to top end cam because mine does that to but once u get it above lets say 3,000 rpm it starts to scream.
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A "bog" is fuel problem and not caused by the camshaft, True the HRC can is a mid-top cam but that doesnt mean it bogs in bottom end.

Originally posted by sethg@May 28 2004, 06:53 PM
Get a pipe, it will stop.
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Putting a bigger exhaust on it will only make the problem worse (leaner condition).

Originally posted by JW450R1+Jan 31 2005, 08:51 AM-->
<!--QuoteBegin-sethg
@May 28 2004, 06:53 PM
Get a pipe, it will stop.
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HMF PIPE IN FULL SYSTEM WILL FIX THE 450'R'S LOW END ISSUES.TRY THERE WEB SITE.THEY HAVE GOOD TEC SUPPORT
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He is not having a low bottom end power issue he is having a bogging problem from a lack of fuel.

Originally posted by Kendall S.@Feb 1 2005, 04:54 PM
I just bought  an 05 and installed the hrc kit. I am haveing the same problem launching, 
it wants to bog. I have 185 mj,  needle 3rd clip.  It screams in mid to high range rpms, but seems like it falls on it face if you give it all the throttle at once. I have the pilot  adjustment screw 2 1/2 turns out.  If I roll on the throttle it seem ok. Crap I wish I could line this beast out..  What is the correct way to adj the pilot screw?
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Turning the screw out (ccw) will richen it and turning it in (cw) will lean it.

I am not trying to be a smarta$$ here its just that most of you guys are giving him false info. Sprockets and Exhaust systems will not help his problem. I hope this helps.


8
 

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It is true that the HRC is a top end cam. But, also the sand will suck your power alot. I had the 13t with the hotcam stage 2 which is a mid range cam and still it felt doggy. You need to have the proper gearing for the sand. If you had a 12 or 13t in front and aleast a 40t in the back. Your quad will srceam in the sand.
When it comes to sand,,,, gearing is the name of the game. You could have some type of fuel problem, but guaranty. If you do the gearing with the fuel mix right!! That 450R will pull hard!! :D

Rico
 
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