i just installed a 440 kit on my 01 400ex and obviously it doesent run too well.
so basically im looking for what you guys have your carbs set at just for a starting point...jet size where your clip is and air fuel mixture would be great.
i know the idea is i need to play with it but like i said i just need a starting point to work from being that i think the jetting was off even before i put the kit on.
i live/ride at about 2500ft elevation. thanks for the input.
400ex w/440 kit jetting help please!
Started by
vwracin2win
, Dec 04 2008 01:58 PM
4 replies to this topic
Posted 05 December 2008 - 02:07 PM
im haveing the same issue want to know if i need to re-jet my 2008 TRX 250EX when i run with the lid off and baffle out of the exaust if so what jets (live in AZ the hot part of AZ) thanks
Posted 06 December 2008 - 10:35 AM
What are your symptoms? Poppin on decel? Hard starting?Bogging? Low power? The stock jetting should be a very good starting point.
Posted 07 December 2008 - 10:34 AM
it starts and runs fine until you give it some more gas and it doesent want to even touch the top end it just cuts out almost like a rev limiter. it currently has a 170 and a 42 for jetting, thanks.
Posted 18 December 2008 - 02:37 AM
does it rev thru the rpms untill it gets up there or is it cutting out way before that.it almost sounds like valve timing or maybe valve clearence.the stock jetting is a good starting point.usually when you go to a BB you need to go a little leaner on the main(but not by much)
