carb needle question

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madmann1

Free Member

Nov 7, 2009

38

0

6

edmonton alberta canada

• Dec 30, 2009

• #1

o5 t vector lean off idle to just under half throttle but my needle has no adjustment now what? anyone have a list of needles that may guide my dilema?????? how would a stronger cv spring affect this??? any ideas would help

 

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madmann1

Free Member

Nov 7, 2009

38

0

6

edmonton alberta canada

• Jan 5, 2010

• #2

WOW might be the first time no one had an opinion good or bad. Really nobody, Even a Ph# of someone to call would help. Might just try installing a shim below the needle to see if that helps???????

 

turboyammy

New member

Lifetime Membership

Nov 27, 2007

94

4

8

Billings

• Jan 7, 2010

• #3

Welcome to the T Vector carb party! I have the same problem and am still messing around with adjustments. I had the slide machined so I could use shims to adjust the needle so that is possible, just not as easy as I was used to.

 

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madmann1

Free Member

Nov 7, 2009

38

0

6

edmonton alberta canada

• Jan 10, 2010

• #4

were you able to get enough adjustment on the stock needles after machiening to make the difference????? been trying to cross over the needles with not much luck. seems like the adjustable needles from a 96 kawi klx650r might be a possible solution.slightly thinner on top to allow more fuel. Have you tried any other needles (dont want to waste time and money)???????

 

I

icr

Free Member

Nov 26, 2007

2,866

1,337

113

• Jan 10, 2010

• #5

here ya go

http://www.snowestonline.com/forum/showthread.php?t=125902

 

M

madmann1

Free Member

Nov 7, 2009

38

0

6

edmonton alberta canada

• Jan 11, 2010

• #6

great stuff for mikuni carbs but these are keihin's and are not adjustable. But cracking out the sandpaper is a good last resort. anyone else care to chime in??????

 

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yamamahauler

Free Member

Dec 2, 2009

1

0

1

Wasilla, Ak

• Jan 23, 2010

• #7

I am no expert here, but I have a stage one supercharger that I run on a vector In Alaska. Not much help tuning these things,as not too many built like the RX1 or Apex. I read 15+ pounds on my boost gauge. I had a lean spot at about 1/4 throttle. I added a polaris needle shim from an rmk and this really seemed to help. Still a minor flat spot, might could use another shim. Any way just my 2 cents hope it helps.