ktm 550 mxc monster
~SPONSOR~
- Aug 11, 1999
- 30
- 0
Hey guys, I need some assistance on my Rm, I can't seem to get the jetting on it right at all. Here go specs then I will get to the problem.
01 Rm250
Stock top end
V force 2 valve
Fmf fatty pipe
Stock silencer
Moose air cleaner
50% superfast fuel race gas,50% premium unleaded
927 castor @ 40-1
764' above sea level(dallas area)
160 main jet
48 pilot jet
needle n3wk on #2 or lowered one notch
air screw 1-1/4 out
powerjet carb
#7 slide
The problem is it loads up easily, spooges like mad and has sluggish 0 to about a little less than 1/4 throttle response, but the air screw achieves maximum rpm around the mentioned 1-1/4 leading me to believe the pilot is ok.
The top end just had a new piston put in about 5 hours ago.
The jetting didn't seem to bad before I put boyesens in and it went down hill from there.
In my never ending quest for more bottom end I put the v-force on trying to limp through till our racing summer break to get it ported by Eric.
This didn't make much of any differernce to the jetting from tbe boyesen reeds.
Bike doesn't like to idle well either.
Here is the funny part, the starter bypass on my bike is adjustable but acording to the manual( oem suzuki service not owners) you can only safely adjust it out a maximum of 24 clicks which leans it..
At about 30-31 clicks out it starts to be very snappy and idles ok, but it does sound a bit too lean and has some up down surges suggesting the same, 3 clicks in (27-28) and it goes down hill fast.
The manual suggest that the screw affects 0-3/8 throttle and is factory set at 12.
I would think if my pilot is so rich that I have to crank that thing out to 30 to get it to snap up some that it would not pick up rpm with the air screw at 1-1/4 but be sluggish and have to have the idle adjust slide stop screw in so far.
I don't know where to go with it now, it gurgles,spooges and stalls horribly when doing tight woods riding.
lower needle all the way? lean pilot more? throw bike off cliff??
The main seals are in good condition and I never loose trany fluid.
HELP!!!
01 Rm250
Stock top end
V force 2 valve
Fmf fatty pipe
Stock silencer
Moose air cleaner
50% superfast fuel race gas,50% premium unleaded
927 castor @ 40-1
764' above sea level(dallas area)
160 main jet
48 pilot jet
needle n3wk on #2 or lowered one notch
air screw 1-1/4 out
powerjet carb
#7 slide
The problem is it loads up easily, spooges like mad and has sluggish 0 to about a little less than 1/4 throttle response, but the air screw achieves maximum rpm around the mentioned 1-1/4 leading me to believe the pilot is ok.
The top end just had a new piston put in about 5 hours ago.
The jetting didn't seem to bad before I put boyesens in and it went down hill from there.
In my never ending quest for more bottom end I put the v-force on trying to limp through till our racing summer break to get it ported by Eric.
This didn't make much of any differernce to the jetting from tbe boyesen reeds.
Bike doesn't like to idle well either.
Here is the funny part, the starter bypass on my bike is adjustable but acording to the manual( oem suzuki service not owners) you can only safely adjust it out a maximum of 24 clicks which leans it..
At about 30-31 clicks out it starts to be very snappy and idles ok, but it does sound a bit too lean and has some up down surges suggesting the same, 3 clicks in (27-28) and it goes down hill fast.
The manual suggest that the screw affects 0-3/8 throttle and is factory set at 12.
I would think if my pilot is so rich that I have to crank that thing out to 30 to get it to snap up some that it would not pick up rpm with the air screw at 1-1/4 but be sluggish and have to have the idle adjust slide stop screw in so far.
I don't know where to go with it now, it gurgles,spooges and stalls horribly when doing tight woods riding.
lower needle all the way? lean pilot more? throw bike off cliff??
The main seals are in good condition and I never loose trany fluid.
HELP!!!