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View Full Version : Full exhaust -no lid JETTING?



440challenger
08-25-2007, 05:53 AM
Im at sealevel.

Stock 400ex motor with an open air box and a full yosh exhaust. Anyone know a ball park where i should be at with jetting? thanks!

timsmcm
08-25-2007, 08:45 AM
160 to 172 each motor will be different start at the high end and work down

Wheelie
08-26-2007, 04:06 PM
40 Pilot, and 155-160main depending on the air filter.

B-rad D
08-26-2007, 07:54 PM
im run a 180 at 4000 feet

JDMThoughts
08-26-2007, 07:56 PM
155 main jet, stock needle, stock clip, 45 pilot, and 2 turns out. That's where I set mine up and it runs very nicely.

timsmcm
08-26-2007, 08:00 PM
please start out high jets are cheap and work down each machine is different if you have a machine that needs a little more fuel and you go with a smaller jet and cook your motor it can be costly

JDMThoughts
08-26-2007, 08:01 PM
your a jersey boy too so you might be close to sea level like me. My town is only a few feet above it.