Posted July 18, 2007 - 06:55 AM
just had my bike dyno jetted today and was quite shocked at results. i thought my bike was pretty spot on i ve done all free mods and added full fmf system (powerbomb and q4) removed smog pump and added jd jetting kit and followed instructions and dyno shows jetting to be miles out standard is 162mj, jd recommends 165mj and dyno says need to change to 160mj i thought bike ran good with jd recommendations but cant wait till leaned up to see full power i m gonna alter mjet b4 next run on wed and their gonna fine tune needle height(cuts costs down ha ha ha) on the day
Posted July 18, 2007 - 07:51 AM
Posted July 18, 2007 - 10:17 AM
It's great to see you here! I hope you're doing well.
Times have changed and none of the manufacturers use the version of FCR carb you once tuned with except for the DRZ. No main air jets to replace now and the accelerator pumps are tuned by diaphram rivet lengths and Leak jets in the float bowl instead.
Yes, Jetting Q's is still here, and will be for years to come.
that was from mr dean himself sorry if i m too dumb to find what you mean but do you have a link, all i was trying to get at was paid money for jd kit and its no where near instructions i coulda saved money and standard jetting woulda been closer
Posted July 18, 2007 - 10:56 AM
Posted July 18, 2007 - 11:06 AM
i m still on 48 pilot but have just dropped to 160 mj and difference is unbelievable it s now starting to come up in fourth, this is more like i was expecting bike to run. still dont think its quite right but guess fine tweeking next wed on dyno will sort it out by the way elevation is sea level and humidity 54% with temp of69.91F cant belive how far out jd s jetting guide was wish i d followed indys he s a dam sight closer. i hope 1 day ill be as knowledgeable as yourself guess you ve been playin with these for quite i while this is my first 4 stroke and i m pretty impressed oh by the way output was 46.02 hp
Posted July 18, 2007 - 11:39 AM
I'm currecntly running 165/45/JD Red 5th notch/70 leak and even though the bike performs well, I feel it's too rich. Thanks.
Posted July 18, 2007 - 11:48 AM
this is where i m at
all free mods
zip ty fuel screw 1 3/4 turns from seated
gray wire disconnected
fmf powerbomb header
all other jetting is standard
red needle 4th clip from top
as in previous posts scrapped jd s recommendations although bike started and run real well by dropping mj from 165 to 160 bike has new lease of life for the first time since i ve owned it i m shaking after last ride ha ha ha ha
i ve gotta wait till next week for dyno only booked in for diagnostic 2day as earlyier stated i altered mj as they instructed cos they charge £37 per hour and i can do this myself they will tweek next week just trying to get bike into right area for them i ll post dyno runs when camera is fixed
seriously though its money well spent
Posted July 18, 2007 - 01:18 PM
Posted July 18, 2007 - 03:08 PM
Posted July 18, 2007 - 05:04 PM
Mine needed a #40 when I did that.
I really gotta think that you need to drop at least one size on your pilot jet to a 45 or 42 as well. On mod I didn't see you mention was wether or not you disconnected the ACV circuit. I did mine just by flipping the diaphram over. I think it gives slightly hard to understand jetting results when it is still functioning and letting air into the intake on decel. Again this is just my .02 - WR Dave.
Posted July 20, 2007 - 12:03 AM
Posted July 21, 2007 - 06:29 AM
Posted July 21, 2007 - 07:42 AM
zehr i guess looking at my dyno sheet my bike is running richest between 5000 and 6000 rpm presume thats down to pilot jet now which i m gonna change tom what wr dave says makes sense now, i get the feeling he s pretty keyed up. gonna search forum and try to find dia of acv removal etc bit easyier to understand that way