125-200cc '09 WR125/Updated Power Valve Ride Report

I did a long ride today with the updated power valves and my suspension revaled and lowered 1" by A.C.E.

The power valves make a big difference in the mid range. There is no longer a slight pause as the motor spooled into the mid, it's right there now. With the stock pipe and jetting it has all the bottom and possibly lost a touch of top end. Traction was at a premium today after 3+ days of rain, so that may have been a contributing factor (Still running FIM tires, kind of used to them now.).

The suspension worked very well in all sorts of stuff. Nasty braking and acceleration bumps I would try to ride around on the stock forks, just get soaked up now. Wet rocks and roots also just get sucked up, where as the stock forks would get you deflected big time. Stock shock wasn't bad, but I now have greater flexibilty in settings....... Deep South Jersey sand whoops on one end, my local riding with lots of slick off camber roots and junk and then Pennsylvania and New England Rock Gardens with little or no dirt at the other end.

I'm a happy guy right now!

Thats cool I am glad the new power valve worked out the mid range bug. Now tell me more about the suspension work as in: What did it cost is you if don't mind? Did the 1" drop make a difference? Is it possible to drop a 125 1-1/2" - 2" without doing bad things to the bikes handling? What is the turnaround time on it? Thanks, John

Sounds good!

Rode the bike again today and it's working well. It's getting pretty humid here now, so I'm going to jet down for the Summer weather. I'll report later in the week.

Thanks for the pics Kelly! Are the PV's easy to change out? Since our CR is not getting them as part of its "upgrade" I may order them and do it myself.

As far as your rich mid, I'm wondering if your 470 main might be contributing a little to that. I know it should be the needle, but when I tried a 470 main in the CR, it began gurgling from about 60% throttle all the way up. The plug also read very rich with the 470. At one point I went down to a 450 during the experimentation stage and it was obviously too lean (bogging and white plug tip). I'm back with the 460 now and things are crisp from mid to top. Just a thought.

Thanks for the latest pics

I forgot you messed with the slide and main to help your mid prior to getting the new valves. I was thinking about things from a stock CR perspective and forgot about the things you did to make your WR rideable while waiting for the valves.

Glad to hear it's screaming for you now!

I got a call from Bottone's service manager Harvey today. He said he did a power valve update on a customers bike and re-jetted it as well. The bike had the recommended Power Up jetting, stock pipe and silencer. He went down one size main jet to 450 and dropped the needle to 2nd position from the top. He said it ran very crisp and strong. Temps here have been from 60-90F and humid. I swapped mine tonight and will be riding tomorrow, taking mileage on my club's hare scrambles course. I'll report back.

I rode today...... Temps 80F+, humid, 1500-2000'. The bike ran awesome, very crisp, but smooth and easy to control in the slick as snot conditions after about 3" of rain in the last two days. I'm not sure I need a 200!

how about a 144??

Skid......my 07 WR144 is for sale and not far from you.........
Joe

damn ....
there is already an 08 cr on its way up from WV.
I would have been interested in a test ride on that 144.
at 3K for the 08 I was kind of figuring if I wanted more grunt I could 144 it over the winter.
might have been able to get right to it!!

I'm not sure I need a 144..... This is the best 125, I've ever ridden! More rain last night and this morning made the Hare Scramles course (12 miles) super slick. The little 125 just eats it up!

Norm

What jetting do you have now? I see the 450 main what pilot and slide are you running. I am picking up my 125 tommorrow with the new power valves and wanted to see where I should start as far as jetting goes.

Thanks

Chris

Chris,
4.0 slide, Power Up Kit needle (sorry, can't remember the number) with clip 2nd from top, 450 main, 45 pilot, air screw 1.5 turns out.

My inclination would to have gone down on the pilot, but the thing runs great. I was arrowing trail, with it idling a lot..... no loading up, no fouled plugs.