banshee boy 98 Posted September 30, 2005 Author Report Posted September 30, 2005 Did you do the plug check correctly,(not trying to offend)at high speed for a few seconds, kill the power and coast to a stop? 421256[/snapback] yes i know how to do a plug chop. i have the carbs aparts right now, i'am going to measure the float height tonight. Quote
FIRST BANSHEE Posted October 1, 2005 Report Posted October 1, 2005 (edited) yes i know how to do a plug chop. i have the carbs aparts right now, i'am going to measure the float height tonight. 421299[/snapback] I would clean the carbs good now that you have them apart, and also take everybody advice when we tell you that a 280 is way to lean with your mods, keep running race fuel. good luck Edited October 1, 2005 by FIRST BANSHEE Quote
banshee boy 98 Posted October 1, 2005 Author Report Posted October 1, 2005 i put 270 mains in it and it ran alot better. Quote
strokersquid Posted October 1, 2005 Report Posted October 1, 2005 when it does this and you back off the throttle does it get better right away ? its probably lean then. when its too rich it tends to sputter and get better when you first crank her open er i mean open the throttle Quote
Hadar Posted October 2, 2005 Report Posted October 2, 2005 (edited) Reply to #1 What kind of pipes are you running? Edit: Oh pro circuit, I'm blind Edited October 2, 2005 by Hadar Quote
breidy Posted October 3, 2005 Report Posted October 3, 2005 stop running race fuel it will start running right. 420649[/snapback] you took the words right out of my keyboard.. no need for 112 with those mods. 93 octane is enough. Quote
midnite Posted October 3, 2005 Report Posted October 3, 2005 (edited) Banshee boy 98, I live just south of you, so we ride roughly the same elevation. My 99 has pro curcit pipes, no lid, and a proflow. It was jetted at 300 mikuni main when I got it. I finally tried some 310 mikunis, and it worked fine. So I tried some 320 mikunis today. It runs great. Tomorrow, I'm trying some 330s. Imo, I think you are very lean at 270s. With 19cc domes you need high octane gas. 16 cc 210 lbs. - 115 Octane 17 cc 200 lbs. - 112 Octane 18 cc 190 lbs. - 110 Octane 19 cc 180 lbs. - 105 Octane 20 cc 170 lbs. - 98 Octane 21 cc 160 lbs. - 91 Octane 22 cc 150 lbs. - 91 Octane Edited October 3, 2005 by midnite Quote
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