Starting from scratch
Posted July 06, 2005 - 08:16 PM
P.S.- My JD Kit instructions went bye-bye, so if anyone has a copy and can email it to me, I'd be most indebted. TTFN...SC
Posted July 06, 2005 - 08:42 PM
Posted July 06, 2005 - 09:04 PM
Sure, rub it in why don't ya . I will be reporting back as I go through this thing, so rest assured I'll be tapping you for help ...SC
Posted July 06, 2005 - 09:39 PM
I think fuel injection will be our ultimate solution to the issue.
Right on! I nearly brought a GasGas or a Sherco for this reason. I haven't found any where to get aftermarket Magneti Marelli injection systems though.
I don't think it will be long now untill injection hits the big time as new bikes on the scene use injection as it is heaps easier for ADR requirements. Just emagine never having to much around with your jetting!!!
Posted July 06, 2005 - 10:41 PM
Just emagine never having to much around with your jetting!!!
Yeah instead we will be mucking around with mappinng for our power commanders It never ends...........
Posted July 07, 2005 - 05:03 AM
Also, I have the JD instructions and can email them tonight if you still need them. PM me with your email address if you do.
Posted July 07, 2005 - 02:48 PM
I just cant understand why some bikes have the dreaded bog and others dont. NC Mountainman and I have been discussing this at great length over the last few weeks while he was dealing with his new YZ450 mini bog. I have come to the conclusion that the the FCR pumper carb has advanced to the point that it is so complicated with so many overlapping circuits that you cant duplicate the performance from one batch of carbs to another.
This is the conclusion that my father and I have come to. We've ordered several bikes in pairs, 2-400's 2-426's and 2-450's.. They have been different, he's had JD kits and I've always been on OTC jets. Regardless, I agree that these bikes come from the factory different. What has worked on my bike makes his bike bog, crazy.. Good point Indy..
Posted July 07, 2005 - 03:57 PM
Posted July 09, 2005 - 01:33 PM
I hope y'all don't mind that I'm going to use this thread to update my findings. At the very least, I hope it'll serve as a log of things someone can expect from various add ons and tweaks on these bikes. Thanks for indulging me ...SC
Posted July 10, 2005 - 11:47 AM
Posted July 10, 2005 - 07:39 PM
Posted September 01, 2005 - 01:49 PM
4500' - 5500' ASL
Eastern Sierra Singletrack - Sand and Rocks
All Free Mods
Airbox Punch Outs Removed
Twin Air Filter
FMF Q2 w/ SX Powerbomb
NGK Iridium Plug
168 Main Jet
45 Pilot Jet
50 Leak Jet
70 Starter Jet
JD Red #5
2 Turns out - Zip Ty Fuel Screw
Idle set at 1900 +/- 100
I experienced no low end bog, no flattening in the mid-range or top end. I couldn't have asked for a better performance from the bike. Last ride, I had the needle at #4 and I had bogging and overheating issues. In #5, they disappeared completely. Of course, all I had to do was look at Indy's Jetting Chart and I would have been in the money all along, but I was always tweaking the absolute wrong circuit which threw everything else off. There are couple little nuances I changed such as one up on the Main and two on the Starter, but otherwise the chart is the way to go. So boys and girls, there you have it. I'm not screwing with this thing anymore until it gets colder and then it's just a change in the pilot for me. That's it for me and my jetting woes. Thank you and good night...SC
Posted September 01, 2005 - 09:58 PM