spunmonkey Posted June 9, 2006 Report Posted June 9, 2006 Ok I am sorta of a newbie to the site. I was on a long time ago but didnt check in for awhile and forgot all my info. But anyway i am redoing my bike spraying the frame black and new top end. Here is my question. I made a 2 into 1 manifold for my bike. I am using one of my old Keihin PJ36 mm carbs which are bored to a 38 and would like a baseline to start jetting. My motor is bored and ported. Cool head with 22cc domes. Live in Florida so i am at about 10 feet above see level. Before with both carbs i was running a 125 main with a 40 pilot needle setting on the top setting and 1 3/4 turns on the air screw. On top it ran fine but i am a trail rider. I barely get into 3rd gear. And riding like that i was fouling a set of plugs every other ride. But if would open it up and hit 5th or 6th gear (hauling ass WOT) i could go a month on a set of plugs. So my main was good but my pilot was to rich. Then i tried to get a leaner pilot and found out that was the smallest one i they make for that series carbs. So i think my problem is carbs are too big for my style of riding. The bike was originally set up for flat tracking. Now back to my original question. I would like a base line jetting start point. Any help appreciated. Oh no airbox i have a k&n and a uni foam filter. I will post some pics when my lazy ass takes some for anyone interested. Thanks Dustin Quote
spunmonkey Posted June 14, 2006 Author Report Posted June 14, 2006 Nothing. What are some of you with a 2 into 1 setup running main and pilot? I was thinking about starting with a 130 or 135 main and a 40 or 42 pilot for Keihin 36mm carb. I dont mind guessing just trying to start off close. Dustin Quote
bansheeseat$$ Posted June 14, 2006 Report Posted June 14, 2006 Dustin,Try starting with a 190 main a 48-50 pilot and the needle in third notch. :beer: Quote
spunmonkey Posted June 14, 2006 Author Report Posted June 14, 2006 Ok thanks. Little bit bigger main than i would have tried but there is gonna be only one carb now. I will let ya know how everything is when i get it running. Quote
bansheeseat$$ Posted June 14, 2006 Report Posted June 14, 2006 (edited) Yes one carb feeding both cylinders is the key word here.When I was running a single 38mm on my cub shee I had to run a 218 main jet and I'm at 4000 feet. Edited June 14, 2006 by bansheeseat$$ 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.