SXR SXR Jetting, R&D Timing Advance and K&N flame
- Thread starter bo2006
- Start date
- Location
- Cleveland Ohio
I'd go higher octane...91 at least. I think all you need to change is the pop-off springs. look at Group K's website, I think it talks about it there.
Looks like the r&d timing advance kit said to unscrew the high screw 1 turn, and low 1 1/4 turn. Got it all together and seems to run ok in shop, will water test next weekend...
thanks..
Octane_114
LeT tHe gOOd tImEs RoLL
- Location
- Charleston S.C.
you can't tell anything on the trailer in the shop. you will see what happens under a load. take some new plugs and good fuel, 91octane or better as said above. 2.0 n/s with your stock 80gram springs will help to.
Octane_114
LeT tHe gOOd tImEs RoLL
- Location
- Charleston S.C.
from the closed position. are you running duel carbs? i'd start with the low speed 1.0 turned from closed and the high speed 1/2 from closed. and adjust from there
Last edited:
- Location
- Oklahoma
Thats what I thought too... Just installed r and d timing advance kit on my stock 03 sxr, set low speed to 1 1/4 and high speed to 1. Took it to the lake yesterday, idled ok but give it any gas and it would die. Got it started again and then turn the chock on half way then and it ran great, so richened up the low and high speed until it ran good, Ended up at 2 3/4 out on low speed and 2 1/8 out on high speed. Runs like a champ now, timing advance made a surprisingly big difference in preformance across the board.
- Location
- Cruising Around
Adjustment screws are pretty far out, time for bigger jets
Octane_114
LeT tHe gOOd tImEs RoLL
- Location
- Charleston S.C.
I believe anything over 2 turns on the low speed or high and you are not adjusting anymore. you may need bigger jets
- Location
- Oklahoma
Took it out again yesterday and its still lean on the low speed adjustments, guess im gonna have to rejet, never had the carbs apart and dont know much about them,.. Its stock carbs, what size jets will it have? What size should i go to? The ski runs great past 1/4 throttle, also idles fine, just hesitates in low end range. I can turn the choke on 1/4 and it fixes it, however losses some power at higher rpms.
X2Pilot
X2 v2.0
- Location
- Sin City USA
With the a/m flame arrestors you HAVE to rejet, the stock jets are too small. And coupled with the timing advance you are begging for detonation and/or hot spots. Go 77.5 on the lows, 147.5 on the highs and install 2.0 n/s'
- Location
- Apollo Beach Fl.
What is the 2.0n/s?
- Location
- Idaho
N/S = needle and seat.
- Location
- Apollo Beach Fl.
thanks lol guess i coulda figured that one out.
- Location
- ohio
So with just the am filters nothing else I would have to rejet? Running 50:1 ratio klotz oil on 93 octane pump gas
Yes you should rejet. Stock SXR's are jetted a little lean out of the box. Use X2 pilots jetting mentioned above for good results.