Yamaha Discussions about Yamaha ATVs.

CPI in frames....What jets?

Thread Tools
 
Search this Thread
 
  #1  
Old 12-24-2003 | 12:02 PM
shaunonl1's Avatar
Thread Starter
|
Pro Rider
Joined: Feb 2003
Posts: 590
Likes: 0
Default CPI in frames....What jets?

I had a bone stock Banshee until last night when I out CPI in frame drag pipes on it and I am also putting a k&N on it this evening.....Does anyone know what jet to use in it?...And should I throw the air lid?
 
  #2  
Old 12-24-2003 | 12:51 PM
sAyIt_fmf's Avatar
Pro Rider
Joined: Nov 1999
Posts: 1,538
Likes: 0
Default CPI in frames....What jets?

I think it's gonna be trial and error...No internal engine mods? high compression pistons?

In order to get the most out those drag pipes you will want to loose the airbox lid at the bare minimum. You will most likely end up with close to 300's or so for mains.

I don't have much experience with those pipes...I run fatties with no airbox lid and 280 mains. Stock clip positions...stock pilots. It works great for me...but I have no crazy internals done either...I like a nice reliable bike.

The company did not give you a baseline to start with?




 
  #3  
Old 12-24-2003 | 01:07 PM
shaunonl1's Avatar
Thread Starter
|
Pro Rider
Joined: Feb 2003
Posts: 590
Likes: 0
Default CPI in frames....What jets?

Well the guy told me to run a 220 and I just did not think that was right but he may know what he is talking about who knows.......I know what you mean about the reliability....I thin I am going to try and call CPI and check with them.......They di not send me anything not even the mounting brackets
 
  #4  
Old 12-25-2003 | 03:04 AM
bad350twin's Avatar
Pro Rider
Joined: Apr 2003
Posts: 891
Likes: 0
Default CPI in frames....What jets?

I ran one of my banshees with CPI inframes,dual k+n's and no air box and was running like 320's on stock carbs! i think it was said before but 300 is a good place to start!
 
  #5  
Old 12-25-2003 | 10:06 AM
Hiram's Avatar
Pro Rider
Joined: Oct 2002
Posts: 777
Likes: 0
Default CPI in frames....What jets?

I also say to start with 300's, I currently run 340's but do have porting, head modifications and air box mods with a +4 timing advance. I would not toss the lid but would the snorkle and then would cut off 1- 1/2" off the rear of the lid just before the clips, this will work good until you get a bolted on flange filter upgrade then you can toss the lid.

PS. Don't those CPI's sound awesome??? Wait until you port the jugs and then you'll see the insane power you will have.
 
  #6  
Old 12-25-2003 | 09:04 PM
Sandragggen's Avatar
Pro Rider
Joined: Oct 2003
Posts: 300
Likes: 0
Default CPI in frames....What jets?

My son has inframe CPI's with clamp-on K&N's at 700' above sea level is running 310 and probably could go up to a 320. I'd lower the clips on the needle's 1 notch to. I'd also put heavier clutch springs and maybe get the modded shift star for smoother shifts.

JMiller
 
  #7  
Old 12-26-2003 | 12:53 AM
SykoQuadRider's Avatar
Pro Rider
Joined: Jan 2001
Posts: 510
Likes: 0
Default CPI in frames....What jets?

Hey Jay whats goin on man? Do anything else to those bikkes?? Email me man cjm02ram@sbcglobal.net
 
  #8  
Old 12-29-2003 | 11:34 AM
shaunonl1's Avatar
Thread Starter
|
Pro Rider
Joined: Feb 2003
Posts: 590
Likes: 0
Default CPI in frames....What jets?

Well guys thanks for all the help...We ended up going to a 300 with the k&n and no air but I am ordering open air today and we are going to go back and rejet to prob about 310........As far as the sound I LOVE the sound and the only prob that I have found is the fact that I can not keep the front down.
 
  #9  
Old 12-29-2003 | 09:34 PM
Hiram's Avatar
Pro Rider
Joined: Oct 2002
Posts: 777
Likes: 0
Default CPI in frames....What jets?

Nice problem[img]i/expressions/face-icon-small-wink.gif[/img]
 
  #10  
Old 12-30-2003 | 12:05 AM
Ernie660R's Avatar
Pro Rider
Joined: Dec 2002
Posts: 1,771
Likes: 0
Default CPI in frames....What jets?

320 mains, 30 pilots, stock needles 3rd clip, throw away air box lid, 15 tooth front sproket and hold on.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ReconBayou
Kawasaki
11
10-31-2022 05:37 PM
XxS0ccerstarxX
Honda
4
09-24-2015 02:02 PM
XxS0ccerstarxX
Honda
2
09-22-2015 02:40 PM
Nosniborpapa
Polaris
5
09-12-2015 05:54 PM
XxS0ccerstarxX
Honda
0
09-08-2015 12:02 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: CPI in frames....What jets?



All times are GMT -5. The time now is 05:59 AM.