2003 RM250 jetting update

[02'Cr Rider]

I ride @2000-3500ft above sea level and still fighting with jetting.What are some of you other rm riders running for jetting?I can't clean up the oil spitting on rear fender.Should I try 40:1 mixture?I mainly trail ride,and yes I do run it hard.Would like some suggestions?

168 main jet
48 or 45 pilot
NEWK needle @2nd
7.0 slide
1 1/2 A.S.

mixing 91 octane w/MX2T @ 32:1

Thanks

 

[Vytas]

First off, change your name 03'RM Rider

I ride at about 700+ on a '01 RM250 and use the following:

Summer: 158 Main; 42 Pilot

Winter:  160 Main; 45 Pilot

Stock?: 168 Main; 48 Pilot

Needle 2nd clip, modified stock slide, Eric Gorr Mo' Better Porting, TORCO 110 w/ TORCO GP-7 32:1, V-Force Reed, FMF SST Pipe.  All the above = No Spooge

 

[RM250'er]

'02 CR Rider:

Everything like you said, 7.0mm slide - but I ran a N3WJ needle and air screw at about 1 3/4.

That was before I had my motor done, I haven't rec's it back yet so I don't know if it's still the same.

I'm in NJ at 510 feet ASL

 

[kev_rm]

02'Cr Rider, I'm pretty new to this game, but I've been trying hard, and I've had zero luck cleaning up the spooge on my bike (99 RM250 500-2500asl, 92 pumpgas, mobile1), I'm running it really lean from stock (lowest clip, 38 pilot, 158 main) - It does not spooge or smoke when running under high load - but on the trails, it just doesn't get up to temperature (at least with my sorry butt riding it) - Running a BR7 plug does make it run clean, but it's scary white after a high speed run, so, bottom line, I live with a bit of spooge.

 

[placelast]

Cr: let's do some trailing sometime. millenniumdsj@hotmail.com

 

[02'Cr Rider]

Thanks for the replys.I guess I'll keep trying on the jetting issue.VYTAS,I still have my 02'CR250.PlaceLast,I will email you on doing some riding.

Thanks