How about Carb tuning for 250s ?? Starting with 82 and on up

Since we have a 430 update, how about whats in your carb for the 250 models form 82 Wr then on to 83 and 84 air. Lets add in the late WC s whats in your carb ??

i suppose this will be a bit more varied..since the 250 bikes actually changed..

I'll start...
83 250WR
450
6DH20-3
3.0
40
recently sold the bike and can't remember which needle jet I had in there.

Both of my 250 CR's will start off

82/83

6DH20 needle

R-4 Jet Needle

2.5 Slide

450 main

45 pilot

That is really something to think about. Humm FMF still make s an option , or if one could find
a used vintage Answer. Thanks Mr John

I'l have to take the carb off my 82 250XC and CRs to see what is in them. I changed them from when I got the bikes but I didnt write down what jetting I used.

Every stock jetting should be written down. From your starting point on so if it gets mushy along the way we’re not confused to go back. The pilot jet, the main jet, the needle jet, the needle, the clip position on the needle and the opening in the slide should be written down. It gets worse trying to remember with multiple bikes. Each bike is different.

All I can remember is I installed a 40mm carb on the cr390 and ended up going two sizes smaller on the needle jet. I changed the pilot jet, went leaner and main jet I probably went leaner and installed the UFO. See back then I didn’t write it down too. She ran great. But not for a novice rider.

60 main jet?

lol, 460 likely

430
=piston new
after
=400 !

ive got the factory specs for 82 up all models in a pdf if anyone wants them