What should I be Jetted in the COLD

[Infamous039]

What should my jetting be at now that it is colder outside like 40 degrees and below. I am at 300 mains right now and it has been that way through the summer, in which I was a little rich. By the way I have stock carbs. MY mods are listed below.

 

Cool Head 22cc

+4 timing

Stock Carbs 300main 25 pilot

Toomey T5 pipes

Prodesign Filter Setup (NO airbox lid)

Edited December 8, 2006 by Infamous039

[Infamous039]

I know somebody has some advice

[okbeast]

What's the normal temps you ride in? I'd say probably go up 2 mains, maybe make a little air screw adjustment if you have trouble starting it.

[Infamous039]

I rode in hot temps all summer all the way up to now, in which my bike was rich. It starts fine and runs now but I just dont want to blow it up from being to Lean.

[okbeast]

Well if the temps didn't change that much you may be fine, but you know it's always safest to do a plug chop just to make sure.

[David Keith]

Well if the temps didn't change that much you may be fine, but you know it's always safest to do a plug chop just to make sure.

Have you done the plug chop yet? We haven't heard.

[dajogejr]

I'd say 310 in the main at most....320.

 

280ish is the average for airbox and pipes, no lid.

 

If you have to turn the air screw in to less than 1/2 turn out for off idle response, you MIGHT have to go larger on the pilot...but, with an airbox you should be ok.

 

Yeah, plug chop it...and make sure you warm it up properly before going for a rip....