I have a 400ex that is now a 460 and the head has been flowed, oversize valves, dmc pipe, stage two hot cam and my 416 kit would definetly walk away from it. I was just curious about the hot cam and any suggestions

 

All you did was go from a 416 to a 460 kit?

Have you done a compression test?

 

didnt re-jet? or dial the cam in? hmmmmm need more info on what all you done.

 

I have had it built for alcohol so it is 14.5:1 and the valves have only a little bit more than 45 thou. of clearance. I have also got the carb(39fcr) dialed in at main a 170 and pilot is a 48 the neelde sits 3 clips from the top I think it is center soooooooo. I was messin' with the cam to degree it a little but the valves become too close to the piston. And when setting the clearance on the what should it be set at?

 

also I run 110 and it is a 440 stroked.

 

where did you get them done? differnent places im guessing

 

If I were you I'd call someone like Kenz Cycles or For Dirt Only and talk to them about your clearence issues. I would have to say that .045 is to close. I'm currently having a new head with over sized valves and a 16:1 piston installed in my DS and the intake clearance calls for minimum .060 on the intake and .080 on the exhaust. I would think that the EX clearances might need to be a little larger than the DS for the EX is air cooled which produces more heat and would have more thermal expansion than the water cooled DS.

JMiller

 

you said you built it for alcholol??? then why did you say you run 100 and 440 stroked? I dont know what all youve done to it but alcohol dont come in grades.

 

No **** alcohol doesnt come in grades thanx smarty! I broke the bike in on 110 race fuel and I just brought the carb in yesterday to have the alcohol kit put in. thanx for the criticism reconbasher, but now you know whats up with it so help me out.

 

i think the vale clearance is your problem. i wasnt being a smart*** about it, just stating. sorry for the way i put it.