Badvoc said:
ah yes basic details doh!
its a 2003 FS650 had a little porting done to it before I got it.
FCR pumper carb not the MX type tho.
the needle is a OCEM-R I have replaced this with a new one and replaced the nozzle.
original settings
needle ocem-r
Clip 2
MJ 168
PJ 48
PAS 1.25 OUT
PS.5 OUT
it ok with this set up as a race bike ie it would start well idle and throttle reponse was good for snapping it open out of the turns.
now the bike is used mainly on the road and although I'd liked to go balls out all the time local plod won't, so I wanted it to be smoother mid throttlle if you get my meaning and in that prosses Iv uked it right up.
with 48 pilot jet you could turn the PS in all the way and still tick over just, so I thought that was to big a PJ.
I sure it just settings that need changing.
If I had a trailer Id take to a dyno shop and get it done.
My bad, after reviewing your post I see that you posted that you have an FCR 41, so that makes it a MK I. Does yours have a choke?
"Normally" the range on the PS is 1 & 1/18 to 2 & 1/2 turns out. Again, your 1.25 turns out on the PAS is, IMHO way too much air in the first place, but according to the "DOC" right for your PJ size.
With the PS all the way in the bike should die. Keep in mind that about 70% of the tick over mix is from the needle straight.
I checked the DOC and it lists the EM series needle with a S straight which is the next step leaner from your R, using the 48 PJ.
A lot of folks are running a much smaller pilot jet than you are, with the corresponding PAJ size.
For example, just looking at the DOC and what you are after, perhaps this setting might be better for.
DMS needle at clip position #2.
35 PJ with a 45 PAJ.
Reduce Pump squirt to .028" or .75 seconds.
PS 1.5 turns out = or - .5 turns.
It does list a 150 MJ in the DOC with the above settings but you could start with a 165 and work your way down. Read the Owners DOC lot's of good stuff there.
Or, the simplest solution? Riing up Taffy and get one of his jet kits and be done with it. Everyone I have talked with who has bought one of his kits has been happy.
