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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
'02 CR250 Porting & Head Shaving
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[QUOTE="Curt_704, post: 615046, member: 25658"] Parker, I've struggled with the jetting on my 01 CR250 for two years now, but I think I've finally got it. In an attempt to become spooge free I created a lean condition that left several deep scratched in my cylinder wall, so I've found the lower limit and adjusted up from there. I'm running the exact same jetting you are with one exception - a 430 main. The S7 nozzel creates a lean condition somewhere near the top that I believe I've corrected with the 430 Main. I've also switched oils to Mobil 1 mxt2, from Honda hp2, and adjusted my mixture to 40:1, from 32:1. With this set-up my plug looks great and I'm pretty much spooge free. [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
'02 CR250 Porting & Head Shaving
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