Moderators: oldjapanesebikes, H2RICK, Suzsmokeyallan
I feel a bit supid now for not messing with them a bit more but for whatever reason after playing around with them for a little bit they both go down completely to the same level. Not really sure what caused it in the first place though ??? I marked the slides to the carbs and the carbs were brand new a couple of years ago when I built the bike.
I bet you are right that was the issue, going to check the body right now for a burr.tz375 wrote:John,
If they didn't go down fully and it wasn't the throttle stop screws check them carefully to see if there are any small burrs or damage to teh slide or carb bodies.
I'll fire it up and give it a quick spin when I have the time hopefully it will run better on the low end and the airscrews function as they should 
but as soon as you drop the revs back down it has nothing down low 
I think I'll try teazers advice and go the other way and order some 60 pilots. I have to do something! On another note the twin disc set up on the front is bloody awesome, some serious stopping power there Fingers crossed for an improvement! 
far I've tried 35's, 45's and 60's. Going to try throwing the original 25's back in there. Got to do something! I really need a half a day where I can just work on the bike with a box full of jets in front of me. It sounds great when it's on the main jet, I may even have to go a little bigger on those. 
Thank you. I will be removing the petcock this week to see what is going on. FYI it is a cheap chinese petcock fitted to a custom tank. I may source a quality petcock.ConnerVT wrote:Fuel petcocks aren't rocket surgery. But get that sorted out before making any changes to the carbs.
I looked through some of the pages in the thread, to determine what you have for a petcock. Looks as it isn't a stock, vacuum actuated one, so vacuum isn't the issue. But I went through a few stock petcocks, as well as a cheap Chinese one, before I finally fitted a quality Pingtel. Wish I started with this.
A low fuel level in the bowl will affect how the jetting behaves. While not a critical measurement (both vibration [bumps] and angle [turns] will affect fuel level), the fuel level needs to be correct, else you won't have the correct air/fuel mixture. If the fuel flow to the carb is insufficient, the fuel level will always be low.
What I notice though is that there just so much atomized fuel coming out the back of the carbs, if you put your hand near the carb just for a second it gets covered! Not sure if I did something wrong when I built the pipes and they are affecting it somehow but I doubt they could be too far off. 