300rman
03-30-2008, 12:58 AM
ok, when i upgraded to my 300r from the 250 topend, it seemed to have a drop in power. it definitely sounded meaner, but didnt seem to pull as hard.
down the road, i would almost get thrown off slamming third, and it would come up in fourth if i wasnt careful.
now, it will hardly do it from first to second. forget about third.
stats are:
250: boyesen PRO reeds, balanced crank no counterbalancer, possible porting???, keihin carb about a 34 mil, dg pipe, some kind of goofy spacer plate. definitely had not been stroked though.
300: 38 mil keihin, stock crank, counterbalancer installed, ported, dg pipe, Vforce 3 reeds.
the balanced crank is going back into the motor as we speak, had flywheel problem with stock crank. boogered threads.
after getting the head ported, i noticd a huge difference in throttle response, sound, and it definitely widened the powerband. but i noticed no difference in the pull out on the road. still doesnt pull the tire up.
jetting seems spot-on, throttle is crisp, returns to idle fast, great plug color (not too light, but not dark either.
it makes no sense to me at all. only thing i can think of is that the clutch is shot.
The clutch lever is WAY too hard to pull even with a longer EZ-PULL lever, leaving me to believe that it was junk before and someone put nasty springs in to to "fix" it, and with the added horsepower of the 300, the clutch cant grip, so it slips.
i have never felt a stiffer clutch, on a road bike, hi-performance bike, quad, whatever. its like trying to use a lever to disengage a car clutch.
In comparison to a BLASTER clutch lever, how should mine pull? a little harder i would think, but not a whole lot that would kill your hand after shifting it fast down the road a few times?
i ordered new VESRAH friction discs, sanded the metal plates with 360 sandpaper (Think i should go rougher?) and i ordered new OEM springs, which cost me 9 dollars a piece Dammit
any other theories guys?
down the road, i would almost get thrown off slamming third, and it would come up in fourth if i wasnt careful.
now, it will hardly do it from first to second. forget about third.
stats are:
250: boyesen PRO reeds, balanced crank no counterbalancer, possible porting???, keihin carb about a 34 mil, dg pipe, some kind of goofy spacer plate. definitely had not been stroked though.
300: 38 mil keihin, stock crank, counterbalancer installed, ported, dg pipe, Vforce 3 reeds.
the balanced crank is going back into the motor as we speak, had flywheel problem with stock crank. boogered threads.
after getting the head ported, i noticd a huge difference in throttle response, sound, and it definitely widened the powerband. but i noticed no difference in the pull out on the road. still doesnt pull the tire up.
jetting seems spot-on, throttle is crisp, returns to idle fast, great plug color (not too light, but not dark either.
it makes no sense to me at all. only thing i can think of is that the clutch is shot.
The clutch lever is WAY too hard to pull even with a longer EZ-PULL lever, leaving me to believe that it was junk before and someone put nasty springs in to to "fix" it, and with the added horsepower of the 300, the clutch cant grip, so it slips.
i have never felt a stiffer clutch, on a road bike, hi-performance bike, quad, whatever. its like trying to use a lever to disengage a car clutch.
In comparison to a BLASTER clutch lever, how should mine pull? a little harder i would think, but not a whole lot that would kill your hand after shifting it fast down the road a few times?
i ordered new VESRAH friction discs, sanded the metal plates with 360 sandpaper (Think i should go rougher?) and i ordered new OEM springs, which cost me 9 dollars a piece Dammit
any other theories guys?