Hey guys, im getting my pro-x 350 motor back today, was wondering if anyone had an idea what i should start out with on the jetting, its a pro-x 350 kit with trx9 porting, long rod motor, 40.5 kiehin carb, trx 11 stardard mount pipe, 2001 cr 250 ingnation, esr elimator kit with uni air filter, not sure what the pilot and neddle r, what ever esr sends them with, i live at 7000 feet, I had an Esr 330 bolt on with the same set up and it ran a 180 main jet up here at 7000 feet and 195 at glamis, Ive heard that the esr kits run a lot leaner then the pro x so was wondering if i should stay with the same jets from the 330 kit.
Pro-x 350 jetting help needed
mickkey82984
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Hey guys, im getting my pro-x 350 motor back today, was wondering if anyone had an idea what i should start out with on the jetting, its a pro-x 350 kit with trx9 porting, long rod motor, 40.5 kiehin carb, trx 11 stardard mount pipe, 2001 cr 250 ingnation, esr elimator kit with uni air filter, not sure what the pilot and neddle r, what ever esr sends them with, i live at 7000 feet, I had an Esr 330 bolt on with the same set up and it ran a 180 main jet up here at 7000 feet and 195 at glamis, Ive heard that the esr kits run a lot leaner then the pro x so was wondering if i should stay with the same jets from the 330 kit.
Joined
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220 Posts
Thanks for the info, I'm running 180 main, 52 pilot, dgh needle on 3rd clip from the top air ajustment screw 2 turns out, and it runs great from idle to 1/4, then it sputters a little from 1/4 to 3/4 and then runs great on the top end. Feels rich 1/4 to 3/4, should I pull the needle to the second clip from the top? I'm putting a 50 pilot jet in today but don't think that would effect 1/4 to 3/4.
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220 Posts
I have put 2 4 gallon tanks through it, I'm still a newbie not sure what the timing line on the plug is? Spark plug is pretty wet and oily after plug chops.
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