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Title: Time to wake up the old 400ex Post by: ONEslowEXer on February 21, 2005, 05:28:17 PM looking to bring some life to my 400ex thinkin bout JE 416 kit and stage 2 cam...i all I have now is big gun full exhaust K&N no air box cover and dyno jet kit and input would be great ive seen alot of project 400's out there thanks randy
Title: Re: Time to wake up the old 400ex Post by: 500ex on February 21, 2005, 06:20:05 PM bigger valves and have the head ported by someone who knows what there doing,not joe blow shadetree mechanic.You can make it run worse if you just hog it out with a dremel.
Title: Re: Time to wake up the old 400ex Post by: 450R_Matt on February 23, 2005, 01:32:42 PM Hey Randy. Talk to Jeff the guy I told you about that will fix the works shocks. He also builds motors. His shop name is X-Treme. He dosnt do the machine work himself he sends it off to Trinity. Takes a little longer but thats my sugestion here local. Not sure about Trinity but maybe someone else will have a sugestion.
Title: Re: Time to wake up the old 400ex Post by: L.E._YFZ_2005 on March 04, 2005, 09:13:23 AM take it to Atp have mike do his 416 kit on it from what i see the 416 is a crazy insane bike if i could of gone back i probly would do the 416 insteadof the 440.
Title: Re: Time to wake up the old 400ex Post by: Hollywood on March 06, 2005, 11:11:28 PM The 416 is a good choice as well as ATP. With the right combination of parts it can be made to run with just about anything out there. ;) I do think I might would go to a 426 if I had it to do again though. ;D
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