jetting for cold weather..

[stainlesscycle]

i jetted at 75 degrees.. going for a ride tomorrow morning - should be 40-55 degrees. i'm assuming i should just turn in fuel screw a bit - or/and raise needle one position (i don't think i have the next size up jet laying around....)

i'm currently at 2nd position, 172 mj, 42 pilot. 2.5 turns.. - de/ec200

how lean will 30 degrees temp make me? i guess a plug chop will tell..

 

[Eric K]

i jetted at 75 degrees.. going for a ride tomorrow morning - should be 40-55 degrees. i'm assuming i should just turn in fuel screw a bit - or/and raise needle one position (i don't think i have the next size up jet laying around....)

i'm currently at 2nd position, 172 mj, 42 pilot. 2.5 turns.. - de/ec200

how lean will 30 degrees temp make me? i guess a plug chop will tell..

I usually go up 1 size on the pilot and go up 2 sizes on the main for sub freezing temps. I do not move the needle.