reversion ?
#3
#4
If the flow is increased it can have the effect of leaning it out some, what kind of exhaust did you have on prior to the drag pipes?
#7
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#8
just watch you don't add too much fuel to not enough air.
as mentioned reversion will show up as fuel dripping from the air cleaner element.
at certain specific rpms, the pulse wave in the exhaust reverses up the header, past the still open exhaust valve, out the opening intake valve. this occurs more often say 3500 ish rpm.
I only tried a drag pipe system once--- on that bike I lost so much bottom end I was slipping the clutch to get going from a stop-- after 2 days I went back to where I'd been.
mike
as mentioned reversion will show up as fuel dripping from the air cleaner element.
at certain specific rpms, the pulse wave in the exhaust reverses up the header, past the still open exhaust valve, out the opening intake valve. this occurs more often say 3500 ish rpm.
I only tried a drag pipe system once--- on that bike I lost so much bottom end I was slipping the clutch to get going from a stop-- after 2 days I went back to where I'd been.
mike
#9
What kind of aircleaner are you running?
Drags increase the exhaust flow but you need a hiflow aircleaner to make everything work together.
Are you getting deceleration popping and if so, how much? If it's not popping bad then it's probably not all that lean. I'm not a big fan of dumping more fuel in these engines, if you up the slow jet, try a 46 with one washer under the needle and while you are at it, take the carb off and clean it out real good if it has not been done lately.
Doug
Drags increase the exhaust flow but you need a hiflow aircleaner to make everything work together.
Are you getting deceleration popping and if so, how much? If it's not popping bad then it's probably not all that lean. I'm not a big fan of dumping more fuel in these engines, if you up the slow jet, try a 46 with one washer under the needle and while you are at it, take the carb off and clean it out real good if it has not been done lately.
Doug
#10