Yamaha Discussions about Yamaha ATVs.

cutin up the air box

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  #1  
Old 08-21-2002 | 09:24 PM
hoeryder's Avatar
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raptor 2001-proflow foam filter-yoshi full comp pipe-2''x7'' inch rectangle hole on top of the lid with outerwear-altitude 1000 feet getting ready to put the pipe on and rejet i have gotten a lot of good information from the threads about jetting.Greg v, your pictures helped out a lot.thanks.first of all,im using mukuni jets.the main jets i have figuered out.should i be woried about the pilot jets?go to a diferent size?any other tips would be apreciated.does any one think a hole in back of the box would help or hurt.pretty tight there.somebody once said something about air turbulence in the box. just thinking if one more hole somewhere else would prevent that. or is it just a myth? thanks. one more thing, what are the stock pilot sizes .
 
  #2  
Old 08-22-2002 | 06:06 PM
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A hole in the rear of the box will add a tad more air.....on mine, the only Noticable difference is with no lid at all + proper jetting. The Pro-flo set-up with no lid does create turbulence.....this can be fixed by leaning the needles a tad.....at least thats what I had too do with mine.
 
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Old 08-22-2002 | 09:10 PM
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I glad the pictures helped. [img]i/expressions/face-icon-small-smile.gif[/img]

Stock pilots are 22.5's...........I would recommend leaving them alone. I went up to 25's when I went to my 686 set-up, but I'm going back. From what I understand the pilots are primarily for the idle function. I'm rich in idle and lean on top. So, I'm going back to the 22.5's and bumping up the mains.

You will like the Yoshi pipe.

Good Luck!!
 
  #4  
Old 08-24-2002 | 01:52 PM
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Thanks.
 
  #5  
Old 08-24-2002 | 02:17 PM
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Chimmer has the same setup with the back of the box cut out, yoshi pipe and proflow. He has had many problems but since he cut the back out it seems better @ 1/4 thottle. Its killer on top though, gobs of power.
 
  #6  
Old 08-24-2002 | 03:50 PM
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how many post untill i become a trail blazer???
 
  #7  
Old 08-24-2002 | 04:06 PM
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quadracer, I think it's 20.
 
  #8  
Old 08-24-2002 | 04:17 PM
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Old 08-24-2002 | 05:50 PM
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Do you guys know how many posts it takes to become a pro rider or whatever or what i dont really understand.
 
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Old 08-24-2002 | 06:36 PM
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I believe it's somewhere around 200 posts for Pro Rider.
 



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