Posts
13
Joined
8/17/2023
Location
Covington, LA
US
I think I finally have my '00 CR250R jetted right. I've gone up & down the pilot jet scale from a #42 up to a #55 back down to a #50 w/ the NC in 4th & the AS out 1.5 turns. Does < that sound about right? Once hot it won't idle which I read is normal or optimum? Cold it idles fine but as we all know a 2 stroke moto-x motor is a very high performance machine & very touchy/sensitive.
No.
It should idle when hot.
Why do you want an mx bike to idle for more than say 10-15 seconds? No factory racer back in the day idled for more than that.
Maybe we are not factory racers running a national.
The Shop
DeCal Works Huge Plastic Inventory of UFO and Polisport kits.
Free shipping: VITALMX
Luxon 4-Post Bar Mounts
$189.95 - $239.95
No shit sherlock...but maybe a 2 stroke idling forever is over rated.
I hv my cr125 setup not to idle at all. The compression braking is helpful braking. I get the brakes over heated in 4-5 laps.
So is being a D bag on the internet. It's elementary my dear Watson...
Try changing your fluid.
That's super clever from a forum know-it-all...
Better than a forum know nothing that adds useless derogatory comments.
Yeah, you seem to have so much to offer all over the place here. A real go to smart guy. Mr. Idles-a- lot...you are the jerk off that ran your mouth about stuff here. So, in summary GFY
I use the Pro Circuit Jetting recommendations on my 04 KX125, pump gas. Perfect! Search pro circuit jetting, and it will take you directly to the page. This jetting is for 70-85 degrees. I use the stock jetting for the cooler temps. Richer.
Right! I can put one glove on and I need to blip it for the next glove. All about Crispness. Blame it on 4t's. Mtn off-road for years and no stalling. Just a blip and no stalling issue. YAAAT
It does seem the lower they idle the better they run.
A two stroke that doesn’t idle has better throttle response then a carb set to idle.
Yup, you don't want the low speed circuit all up into the main circuit.
I'm looking for the jetting guide i read that said basically that the two stroke engine isn't designed to idle.
Every one produced in the last 40+ years that I have have been working on them has a mechanism designed into it allowing it to idle. Not sure where you get your info but if I was you I would re-evaluate your sources.
Pit Row
If it wasn't meant to idle, why have an air screw and throttle stop!
It'll idle for a few seconds then quit when its hot. As long as it isn't damaging my motor I'm fine with it dying. All the NSR/YZR/RGV's did this.
You want it to stall when you chop the throttle mid air?
"It'll idle for a few seconds then quit". No one is "in the air" for more than 3-4 seconds in freakin' neutral.
Go big or go home!
I'm wondering now if loat height is why I have to have a 50SJ & 180MJ? I don't have the correct tool to accurately measure it. Very hard to eyeball it.
Ah yes, the passing of the throttle blip skills. Only noobs or low skilled riders would stall my bike. Just sayin'
In off-throttle conditions, especially trail riding, loading-up issues and fouling plugs can be attributed to settings tuned to an idle. True one could jet to a clean idle, but that is not an optimal tune for power and response, as getting the correct air screw and slow jet settings are corrupted. Something like that anywho.
Go back to the stock settings.
Slow/Pilot- 0-20 throtlle
Needle 20-80 throttle
Main 80- wide open
The recent cooler weather really affects the v2 stroke 38mm Keihin ? We dropped from 95 to 65 degrees in 3wks and it's causing decel pop surge-like symptoms.
Current jetting:
SJ #48
MJ #178
NC 1.5
Post a reply to: Finally!