wideopeninpa Posted February 17, 2010 Report Posted February 17, 2010 OK so I am getting ready to install my new carbs on my banshee, they are 28 mm pwk's. I was wondering if my needle's are the right ones they are N80F My shee has a cool head with 21cc domes, toomeys t5's, +4 timing, K&N filter, K&N air box lid and vforce 3 reeds. i have a good starting point for the main and pilots but I wasnt sure about which needles I should use. Thanks for the help Quote
locogato11283 Posted February 17, 2010 Report Posted February 17, 2010 thats a weird needle number. usually the keihin needles are three letters like CEL or DGK. i have no idea about that needle. id go ahead and jet it to what you think is supposed to be right and see how it runs. id prolly start at 162 main, 48 pilot and needle in the middle. Quote
Fullthrottle02 Posted February 17, 2010 Report Posted February 17, 2010 I run N68A, bike seems to run better with them. I believe my came with JJH needles. I have a stock stroke, dune ported motor and I'm a little fat with 50 pilots and 158 mains with needle in the middle. Quote
ClimbAnyHill Posted February 17, 2010 Report Posted February 17, 2010 My ported Banshee with T5's and all the bolt ons you can think of hated the N68A's, very weird taper & wouldn't run too well.. Rich needles for me! JJH's with 45/152 jets made a huge difference! Quote
ClimbAnyHill Posted February 17, 2010 Report Posted February 17, 2010 My ported Banshee with T5's and all the bolt ons you can think of hated the N68A's, very weird taper & wouldn't run too well.. Rich needles for me! JJH's with 45/152 jets made a huge difference! Edit: And that's at sea level in sunny so cal! Quote
Fullthrottle02 Posted February 17, 2010 Report Posted February 17, 2010 rub in the sunny so cal. its 20 with snow on the ground here. There you go, 2 similar bikes with exactly opposite takes on needles. Hopefully you will bolt them on and be perfectly happy with exactly what you have. My bike ran good with the JJH, it just ran better with the N68A. Enjoy the new carbs. Quote
shanYE west Posted February 17, 2010 Report Posted February 17, 2010 the N68A is not a keihin factory needle.. It could be a needle taper desigend by the manufacturer of the bike (yam, honda, kawi, suzuki) So that needle was designed for little 80 and 85cc dirt bikes. Could be possilbe the they are aftermarket needles.. I only use geniune keihin jets. I used the JJH needles also back when I used the 28pwks. Quote
DGFUNNY70 Posted February 18, 2010 Report Posted February 18, 2010 JJH J = 3' 00' Taper Degrees J = 25.40 L1 H = 2.435 Dia N68A A = 1' 35' Taper Degrees H = 24.25 L1 R = 2.75 Dia Dia = If I understand this right the JJH is richer on 1/8 to 1/4 throttle. Taper = JJH and richer from 1/4 to wide open throttle with most effect on 3/4 throttle. L1 = The N68A needler is richer from 1/8 to 3/4 throttle more effect on 1/4 throttle. So am I right in saying the JJH is the richer needle and does any one have the specs on the N80F needle. Quote
OKO guy Posted March 31, 2022 Report Posted March 31, 2022 The N80F Needle is a little (one notch or so) leaner than the JJH needle. OKO uses the N80F on the 30mm which is actually a 28mm with a vertically stretched bore. We sometimes use it with 26mms when JJHs are a little rich. 1 Quote
375hp banshees Posted March 31, 2022 Report Posted March 31, 2022 Sign dis mudder fuq'r up to be a sponsor!! ! Quote
Keno Posted March 31, 2022 Report Posted March 31, 2022 Adding to a 12 year Necro post,.. But, if you ever need to compare needles. This is the site to do it. https://kyajet.de/?lang=en Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.