14/40 gearing +6 timing 90 temp what would cause the blasters power to just fall off in the upper gears?You think the timing would play a roll in this?
240 4th gear stumble
- Thread starter bundyho1
- Start date
Well the last jetting run was on a 70 temp day and less humid and it was a 152 main and it was running pretty strong.But today i had the same main in and it was about 90 out and more humid and it was running kind of flat .I didnt do another plug chop, i guess i need to.
well u might need to be running an open or a closed airbox lid, mine bogs in 4th when i got mine open. i got lrd exhuast 230 jet and a uni airfilter.
Bundy, I've got almost the exact same mods as you. I'm running a 150 main in mine and its a little fat. Maybe try a 148 or 150 in yours
if it revs like your in neutral then when you back off the throttle and excel gradually and it doesn't do it it's most likely your clutch slipping. I had the same problem in the upper gears and replaced clutch plates and now it doesn't do it anymore.
I feel ya
Also i backed off the the timing a half to 5 and 1/2 now it seems today to be doing better.i will give it a few days of riding and will post another update.Thanks
What kind of gas are you running and how much compression,timing?guess i need to order more jets
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