Yamaha Discussions about Yamaha ATVs.

Jetting

Thread Tools
 
Search this Thread
 
  #1  
Old 05-12-2002, 04:17 PM
Some1's Avatar
Weekend Warrior
Thread Starter
Join Date: May 2002
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Default

I have a Toomey B1 pipe/silencer, Reed spacer and aktive reeds. I know the Toomey is a topend pipe but should it bog down in the low end? Heres some pics of the new plug I took out after about 2 hours of riding. http://photos.yahoo.com/bc/gfx16/lst...tos.yahoo.com/

Tell me what jets a should be using ect, thanks.
 
  #2  
Old 05-12-2002, 04:48 PM
99blueblaster's Avatar
Pro Rider
Join Date: Apr 2000
Posts: 316
Likes: 0
Received 0 Likes on 0 Posts
Default

If that is a new plug with only two hours on it you are rich. Before you mess with jetting make sure your air filter is clean and oiled properly. What is your jetting now( needle and main) ?
 
  #3  
Old 05-12-2002, 05:23 PM
Some1's Avatar
Weekend Warrior
Thread Starter
Join Date: May 2002
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Default

The filter at the time was semi dirty but oiled well. I'm running a 310 main which came with the pipe, and the needle is at the 3rd groove from the top.
 
  #4  
Old 05-12-2002, 05:44 PM
99blueblaster's Avatar
Pro Rider
Join Date: Apr 2000
Posts: 316
Likes: 0
Received 0 Likes on 0 Posts
Default

Other mods? air box? stock needle or lrd?
 
  #5  
Old 05-12-2002, 05:49 PM
Some1's Avatar
Weekend Warrior
Thread Starter
Join Date: May 2002
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Default

Stock needle, only other mods are what I listed.
 
  #6  
Old 05-12-2002, 06:14 PM
99blueblaster's Avatar
Pro Rider
Join Date: Apr 2000
Posts: 316
Likes: 0
Received 0 Likes on 0 Posts
Default

drop the needle back to stock setting(second groove) and drop you main to a 290. It looks like you are very rich. Your needle and main settings are kind of big for no air box mods.

to give you some kind of comparison I have FMF fatty and silencer, no snorkle, uni air filter, and carbon tech reeds. I run a 270 main, 2 clip needle setting, stock pilot, air screw out 2 turns. I run at 1500ft and my plug readings are alittle rich but doesnt foul plugs.

 
  #7  
Old 05-12-2002, 08:40 PM
Some1's Avatar
Weekend Warrior
Thread Starter
Join Date: May 2002
Posts: 12
Likes: 0
Received 0 Likes on 0 Posts
Default

I just took the carb apart, it's not a 310 like they were supposed to put in(I had a racing company put all the mods on). The main jet is a 250, how can it be running that rich with only a 250!?
 
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: Jetting



All times are GMT -5. The time now is 08:27 PM.