SvrdRam Posted September 18, 2006 Report Posted September 18, 2006 hey i need some help.....the shee's cutting out bad top end.....plug chop looks a tad rich but other then that it starts , runs idles perfect....... jus when i start whinning it out , it starts to break up....BAD..... different needle perhaps?//// mods in the sig and im at 700 ft above sea, 188 mains, 45 polit and CEL niddle, clip in the middle.......any ideas????? Quote
Ducman Posted September 19, 2006 Report Posted September 19, 2006 I can't help you with kehins but 2 other things you can check to eliminate. The needles will not affect your top end performance at WOT, only your main jet, unless your needle is way to rich or lean so that it runs crappy at part throttle. Then it takes a few seconds at WOT to clear out extra fuel or get the feul richened up make up for running too lean. Put in new spark plugs. A spark plug can still look ok but be warn out and create a miss on top. Also check to make sure the air gap on the coil is set at .020". Any more than .030 and it will start to get a miss on top and loose some power. Quote
SvrdRam Posted September 19, 2006 Author Report Posted September 19, 2006 (edited) I can't help you with kehins but 2 other things you can check to eliminate. The needles will not affect your top end performance at WOT, only your main jet, unless your needle is way to rich or lean so that it runs crappy at part throttle. Then it takes a few seconds at WOT to clear out extra fuel or get the feul richened up make up for running too lean. Put in new spark plugs. A spark plug can still look ok but be warn out and create a miss on top. Also check to make sure the air gap on the coil is set at .020". Any more than .030 and it will start to get a miss on top and loose some power. did another plug chop tonight......looks pretty rich.......but i cant understand how it went from being jetted spot on at 95 degrees outside to runnin rich at 78 degrees.....shouldnt the colder weather lean it out actually? its gettin pretty anoying with this thing spittin , spurtterin and cuttin out on the top.....after it jus ran so perfect accouple of weeks ago.......Question....i did richin up my mix from 40:1 to 32:1 klots R50, would that affect things that much??? :baseball_bat: damn i spent to long away from 2 strokes Edited September 19, 2006 by SvrdRam Quote
J-Madd Posted September 19, 2006 Report Posted September 19, 2006 did another plug chop tonight......looks pretty rich.......but i cant understand how it went from being jetted spot on at 95 degrees outside to runnin rich at 78 degrees.....shouldnt the colder weather lean it out actually? its gettin pretty anoying with this thing spittin , spurtterin and cuttin out on the top.....after it jus ran so perfect accouple of weeks ago.......Question....i did richin up my mix from 40:1 to 32:1 klots R50, would that affect things that much??? :baseball_bat: damn i spent to long away from 2 strokes Richening your gas/oil mix will lean out your jetting a tad. 188 main seems huge. I run 175s in my Cub w/the same carbs, but maybe I'm a little lean. Quote
dajogejr Posted September 19, 2006 Report Posted September 19, 2006 I run 150s in my cub, 50 pilots (Still a tad rich on the pilots)....CEL needles. I'd go down to a 160 and see if it gets better....that's not a 1 into 2 carb setup, is it? Quote
SvrdRam Posted September 20, 2006 Author Report Posted September 20, 2006 no......its twins..... i had 162s in it when i first fired it up but i dont really have any room around here to play with the jettin....so i took it to MCR to have it jetted..... they did a hell of a job on my Z400 with all the port work n shit they've done in the past..... i personally think there HUGE too.... but around here i can barely get second..... so i bought some more jets.... 160s 170s and 180s and ill play with her at silver lake and dial her in..... you guys gonna be there to help right ....first rounds on me!!! Quote
dajogejr Posted September 20, 2006 Report Posted September 20, 2006 I think me an my buddy are going up early Thursday morning. That gives us (him) Thursday and Friday to get the bugs worked out and the jetting dialed.... I honestly think mine's good to go. I'm a tad rich on the pilots...but, don't spend much time there... I think you should just buy 155 and 160. I'd bet 170 and 180 are WAY off the mark for your bike. I'd put the 160 in and see how much better it is. I know how you feel about no-where to ride. Why don't you come out to Clarksville with us this weekend? It's Saturday, test and tune, as many passes as you can make for 20bucks.... It's about a 2 hour drive from us.... Bring a ton of Jets, and we'll get her dialed in.... Quote
SvrdRam Posted September 20, 2006 Author Report Posted September 20, 2006 sounds like a blast but right now i cant drive anywhere but to or from work.... i was a bad boy and got caught parkin my friends car after i conviced her not to drive it home.....well the cop saw us standin there and when he pulled up.....guess who was behind the wheel.......yup fun shit.... anyways yea id love to but i cant make the drive.......but if anyone has room ;) for a tag-a-long count me in Quote
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