Snopczynski Posted January 29, 2009 Report Share Posted January 29, 2009 Your gonna want to adjust the needles before you adjust the airscrews, and adjust the main sizes before any of that stuff. Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted January 30, 2009 Author Report Share Posted January 30, 2009 I pulled the plugs today and the bike is definitely lean. I'm going to get bigger mains and adjust the clip and air screws. I can't believe a head and reeds along with colder temps can throw the jetting off this much! Quote Link to comment Share on other sites More sharing options...
CBAIER1206 Posted January 30, 2009 Report Share Posted January 30, 2009 I agree with dajogejr...the bog you're feeling down low is prolly your pilots since they control the first 1/4 of your throttle response. in addition to changing your mains...I would check to see if the pilots are clogged first and if they aren't, maybe go up just one size and see if that fixes your low end bog. Another test is to warm the bike up and pull the choke since it supposed to richen the mixture and see if it rides any better...if it does then you're definately running a little lean! Good luck Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted January 30, 2009 Author Report Share Posted January 30, 2009 The pilots are already a size bigger. I'm going to richen the clip and mains and see where that gets me. Here's what I got now 27.5 pilots clip one notch away from center closer to the blunt end 310 mains I'm in ohio @ 800 feet above sea level with temps in the teens and 20s. Mods CPI inframes Noss Head with 19cc domes K&N with no lid on the air box V force 3 reeds +4 timing Before the head and reeds my jetting was perfect. But the temps were also in the 70s when it ran best. So I'm going to move the clip down two notches to the sharper end, bump up to 330 mains, leave the pilots and adjust the air screws. I'm also switching to 100% 110 octane race gas and I'm going to change to Bel Ray H1R oil since I the Benol that I'm using can separate under 35 degrees. Hopefully this can get me where I need to be. Quote Link to comment Share on other sites More sharing options...
magz Posted January 30, 2009 Report Share Posted January 30, 2009 sounds like a plan stan, if it were me id start with the needle all the way at the bottom(so the needles raised the most from seated) and adjust up to where i liked it. if your running in 30-50 degree weather no since in running lean. Quote Link to comment Share on other sites More sharing options...
AKheathen Posted January 30, 2009 Report Share Posted January 30, 2009 i had to go30's with stock reeds and head @20 to -20. Quote Link to comment Share on other sites More sharing options...
GrMeyer Posted January 30, 2009 Report Share Posted January 30, 2009 well before you start throwing some money for some gas do the comp test and see what your at... well all i know is that im at 300's with just pods, fmf fattys, ported reed rage, +4 timing and noss head with 20cc domes for glamis. Quote Link to comment Share on other sites More sharing options...
BoostedRex Posted January 30, 2009 Report Share Posted January 30, 2009 I'm beginning to wonder if the gas is too low of octane and not burning fast enough. When I swapped the head I still had the 93 octane in it and with the 19cc domes I probably will need to run race gas. I had a full tank of 93 and I am planning to burn through it and start running race gas, I just didn't want to throw away a full tank of gas to go to race gas. So what are some symptoms of too low of octane fuel? I know you'll get pinging but can it actually cause low end power loss too? What do you guys think? Just to clear up your misconception about lower octane fuel. The lower octane a certain fuel has the lower the flash point it will have which in turn causing it to burn faster and hotter. So the higher octane you run the harder it is to burn which is why you can run more compression and timing. But all things being equal the lowest octane you can run in ANY motor without having detonation/preignition/pinging the more power you will make and the smoother it will run. So running really high octane fuel in a motor that doesn't need it is actually robbing it of power and efficiency. Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted January 30, 2009 Report Share Posted January 30, 2009 Check your compression, lower your needles back where they were first, then richen more only if needed, richen your air screw 1/2 turn, and i cant imagine with an airbox it needing more than 320s when cold temps. Always shake/mix your gas/oil mix good especially when that cold. Your problem is JETTING. Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted February 1, 2009 Author Report Share Posted February 1, 2009 I bought a really nice compression tester today. I'm at 160psi in both cylinders. Quote Link to comment Share on other sites More sharing options...
GrMeyer Posted February 1, 2009 Report Share Posted February 1, 2009 i was informed that after 150 you need to start running race gas..but what oct i havent a clue...i think you can get way with just 100oct Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted February 1, 2009 Author Report Share Posted February 1, 2009 i was informed that after 150 you need to start running race gas..but what oct i havent a clue...i think you can get way with just 100oct I've got 110 Cam 2 on a pump about a mile from my house so I'm going to run that. I could probably get away with mixing a 50/50 with 93 but more than likely I'll run the straight 110 octane. We don't have 100 anywhere around here that I know of. We have 86, 87, 89, 92, 93, 94 and 110. Quote Link to comment Share on other sites More sharing options...
MikeNick Posted February 1, 2009 Report Share Posted February 1, 2009 I've got 110 Cam 2 on a pump about a mile from my house so I'm going to run that. I could probably get away with mixing a 50/50 with 93 but more than likely I'll run the straight 110 octane. We don't have 100 anywhere around here that I know of. We have 86, 87, 89, 92, 93, 94 and 110. That bad boy wants some of that strong stuff now..haha..CAM II Quote Link to comment Share on other sites More sharing options...
JasonsBanshee Posted February 1, 2009 Author Report Share Posted February 1, 2009 Today it was 45 out. I turned in the air screw 1/2 turn and left everything else the same and the problem is completely gone??? Maybe the 20 degrees cooler and the air screws really do make that much of a difference. Either way, I still ordered some goods from Jeff and I'll fine tune my jetting when it gets here. Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted February 6, 2009 Report Share Posted February 6, 2009 Today it was 45 out. I turned in the air screw 1/2 turn and left everything else the same and the problem is completely gone??? Maybe the 20 degrees cooler and the air screws really do make that much of a difference. Either way, I still ordered some goods from Jeff and I'll fine tune my jetting when it gets here. Glad that took care of it. 160lbs and 4 degrees timing will run fine on Prem 91-93 fuel IF jetted correctly. Quote Link to comment Share on other sites More sharing options...
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.