Jetting for real(!) cold
Posted December 17, 2002 - 04:35 AM
What do you use for 5F(-15C), 14F(-10C)?
Pilot air jet
Main air jet
Jet needle , groove position
PS: I know the carbs are different for different markets
(US, Europe, etc.), but i hope your information will help me
with my games with jets.
Posted December 17, 2002 - 10:51 PM
if you have a euro wr400f? then i would suggest that you go with my jetting from below but that you keep the very rich choke jet in to get the bike started. so a #62 or a #65SJ is fine.
once the bike is up and running the jetting figures below will run the bike at a good 'normal' temperature.
if i were you i would cover at least 50% of the radiator as an experiment. this should give you a good operating temperature.
how to tell?
well generally i would tell when i've STOPPED the engine. the click-click and clack-clack of everything cooling down. if it's hotter than normal; expose more of the radiator than before etc etc
Posted December 17, 2002 - 11:03 PM
but i see your main idea about very rich choke jet and
'normal' jetting for the rest. I'll try and post my results
Thank you, Taffy