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pwk slides? what is the best number to use?
Posted: December 29th, 2009, 5:56 pm
by high velocity
Ok i got a 39 pwk off ebay that was on a ktm 125.That carb has a #55 slide and seems to rich from1/8 throttle to 3/4 throttle.48 pilot ,168 main . dgh needle. What number slide are you guys running?
Posted: December 29th, 2009, 5:58 pm
by AlisoBob
1/8 to 3/4?
Slide isnt going to help that....
Posted: December 29th, 2009, 6:55 pm
by fastkart
Take a look at the picture below, taken from Keihin's site, as well as read up on the link.
http://www.keihin-us.com/tune1.htm
Posted: December 29th, 2009, 9:01 pm
by robertg
Most are running a 6 or 7. A bigger number is leaner, but the cutaway is larger.
Posted: December 30th, 2009, 8:00 am
by high velocity
Thanks great info, going to try a 6 when sudco re opens next week.
Posted: December 30th, 2009, 9:08 am
by AlisoBob
high velocity wrote:Thanks great info, going to try a 6 when sudco re opens next week.
Its not going to make any difference
Posted: December 30th, 2009, 9:27 am
by yota
the slide cut away regulates the amount of air drawn over the needle jet at about 1/4 throttle. If you ride a lot at partial throttle openings like I do (semi tight woods) it does have some effect. If you whack the throttle open most of the time you probably wouldn't notice much. My gut tells me a 6.0 would work a little better for me but its not 50 bucks worth of better.
Posted: December 30th, 2009, 10:02 am
by AlisoBob
yota wrote: My gut tells me a 6.0 would work a little better for me but its not 50 bucks worth of better.
Posted: December 30th, 2009, 10:17 am
by high velocity
Ill probably try a 7 slide since i ride 5000 to 8000ft in the tight trees and high desert. I put a 42 pilot droped the needle all the way down and it seems to run better on the bench but i have not riden it yet.Will take out this afternoon when it warms up.