jetting for piped 400ex

[Jake250ex]

my buddy just got a white bros e series slip on, a knn filter and we need to rejet it.

We will be running it with however many discs come on it when it arrives. We also will not be using the airbox lid. Can i buy just one main jet (chapparal sell single jet) or do I need the whole kit? What size main jet should I use? Is there anywhere that has a step by step guide to re jetting anywhere?



Thanks!

[Colby@C&DRacing]

I would use a 42 pilot jet and a 160 main.

[Jake250ex]

dumb question, but the 400 carb is a mikuni right?

[thomps6s]

kehein (sp?)

[cals400ex]

this carb is a keihin. it will use 13 series mainjets and 21 series pilot jets

[Jake250ex]

can you guys help me out a little.... everywhere I read said it was a mikuni and I have never heard a series # of jets


I dont want to buy a whole kit tho, jets single just


where can I get what I need

[thomps6s]

Your Local Honda dealer

[Colby@C&DRacing]

Most honda dealer are going to charge you an arm and a leg for a jet we sell them for $3.75

[Jake250ex]

alrighty ill get the parts from you.. as long as I can get some sweet stickers :D


do you have any part #'s I need and what do I do.... just call you guys?


I need a 156, 160 mains and the 42 pilot jet

[cals400ex]

just call them. they know what you need.

[DeerNuts]

Originally posted by Colby@C&DRacing
Most honda dealer are going to charge you an arm and a leg for a jet we sell them for $3.75

I got a single main jet locally and paid $1.90. it was a 150 keihn main jet.

Im assuming the price doesnt change based on the size, correct?

(If 3.75 is cheap I would hate to see what the honda dealers are selling them for!!!)