themudgician Posted September 1, 2008 Report Posted September 1, 2008 first of all i live in indiana this is my first banshee im a auto mechanic not used to 2 strokes its a new world to me.i have a 1997 it has what i belive to be 28mm keihin pwk flat side carbs, 45 pilots 155 mains and lgn needle. it has a pro desighn cool head dont know what dome. it has 135psi comp both cyl cold throttle wide open couldnt check it warm. it has boysen rad vavles look good i noticed where the boost bottle was the intakes are both ripped. stock cylinders bored .010. fmf pipes and silencers.im runnin castor 927 40 to 1.the problem i have is it will start right up and idle fine. but off idle it just kinda bogs around with no power till you get it wound up and it will rip pretty good. if you wot it in first it takes a few seconds for it to rev high enough to the power band to make any power.my 250r i traded for it would kill it. basically it idles good and runs wot good and thats it.it has no mid range driveability. idle screws were turned out about 3 whole turns air screws were aroun 1 in a quarter. is this prob from a vacume leak from the boost bottle. or carb jetting the slides look sync as far as slide movement goes. the guy i got it from knew nothing about it as far as what parts are on it.so i think its not set up right. any help would be greatly appriciated. Quote
themudgician Posted September 1, 2008 Author Report Posted September 1, 2008 some things i forgot the needle clips were in top notch i moved them to the middle didnt change anything. the plugs are blackish and a little wet. left bank smokes a little right side dont Quote
elwilliams13 Posted September 1, 2008 Report Posted September 1, 2008 sounds rich. Lower the needles and see if it helps. screw out your airscrew at the back of the carb. Also make sure those boots aren't leaking. Maybe the guy just made it rich to try and compensate for an airleak. If you want a little more bottom end advance the timing 4 degrees. I did it to mine and you get a little more snap off idle. Quote
themudgician Posted September 1, 2008 Author Report Posted September 1, 2008 sounds rich. Lower the needles and see if it helps. screw out your airscrew at the back of the carb. Also make sure those boots aren't leaking. Maybe the guy just made it rich to try and compensate for an airleak. If you want a little more bottom end advance the timing 4 degrees. I did it to mine and you get a little more snap off idle. the needle was at its lowest setting. do i need a different needle and does the boysen rad valve use a special intake or do i need a special one for those carbs and where can i buy them at Quote
elwilliams13 Posted September 1, 2008 Report Posted September 1, 2008 I know the rad valves richen up the midrange some over the stock. What number is on the needle's? Quote
elwilliams13 Posted September 1, 2008 Report Posted September 1, 2008 Also check these out that needle you mentioned in a previous post sounds funky. The PWK is picky about needle selection. http://www.keihin-us.com/am/_media/pdf/pwk-pj_jetneedles.pdf http://www.keihin-us.com/am/_media/pdf/slide_valve.pdf Quote
themudgician Posted September 2, 2008 Author Report Posted September 2, 2008 hey guys i just pulled my stator cover off to see if it had an adjustable timing plate and it does but its set on -5 shouldnt it be advanced not retarted. is that why i have no power till top end. Quote
LS1Inferno Posted September 2, 2008 Report Posted September 2, 2008 hey guys i just pulled my stator cover off to see if it had an adjustable timing plate and it does but its set on -5 shouldnt it be advanced not retarted. is that why i have no power till top end. yep thats ther problem. +4 is a good place to be if you want more end. WTF? ive never seen one retarded before lol put the needles in the middle and +4 and try it there. Quote
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