Gurnzz Posted June 4, 2008 Report Posted June 4, 2008 98 shee. noss head with 20cc domes. carbon fiber reeds. boost bottle. tors eliminator. fattys with powercore silencers. 300 main. 27.5 pilot. will only start cold by popping it. once its warmed up will start first kick everytime. 108 octane. did a compression check about 130 which is low according to the noss website. im at about. 500 feet above sea level. not really sure where to go next. any help and or suggestions would be a big help. thanks Gurnzz Quote
bansheesmoke Posted June 4, 2008 Report Posted June 4, 2008 98 shee. noss head with 20cc domes. carbon fiber reeds. boost bottle. tors eliminator. fattys with powercore silencers. 300 main. 27.5 pilot. will only start cold by popping it. once its warmed up will start first kick everytime. 108 octane. did a compression check about 130 which is low according to the noss website. im at about. 500 feet above sea level. not really sure where to go next. any help and or suggestions would be a big help. thanks Gurnzz Whats the temp there? When starting a cold bike it requires a rich mixture (more fuel) to start. 108 octane for 130 psi compression doesnt sound right.Im pretty sure you should be running pump gas. Are you using the choke? wheres your air screws and needle set at? Quote
lowbuckracing Posted June 4, 2008 Report Posted June 4, 2008 Take Boost bottle off,run the original crossover tube,Check to see if the little hose between the 2 carbs is connected and double check plugs.... Quote
tgbanshee Posted June 4, 2008 Report Posted June 4, 2008 Your compression reading seems way low for those size domes and your elevation in cold weather. If you put the head on yourself, I would pop it off and inspect the o-rings to make sure they are in their groves and didn't fall out and get pinched when you assembled it. It also might be time for new pistons and a fresh bore if it's been a long time or if you're still on the stock bore. Quote
Gurnzz Posted June 5, 2008 Author Report Posted June 5, 2008 Your compression reading seems way low for those size domes and your elevation in cold weather. If you put the head on yourself, I would pop it off and inspect the o-rings to make sure they are in their groves and didn't fall out and get pinched when you assembled it. It also might be time for new pistons and a fresh bore if it's been a long time or if you're still on the stock bore. yeah i thought the compression seemed way to low myself so rechecked the comp with a new gauge and was the same. all the orings are good. i think its time freshen up the pistons being that the comp is almost exactly the same on both cylinders. thanks for the reply. i really appreciate ur help ! Quote
tgbanshee Posted June 6, 2008 Report Posted June 6, 2008 yeah i thought the compression seemed way to low myself so rechecked the comp with a new gauge and was the same. all the orings are good. i think its time freshen up the pistons being that the comp is almost exactly the same on both cylinders. thanks for the reply. i really appreciate ur help ! Thats what we're here for! Good luck with your rebuild! Quote
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