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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
06 YZ144 Pipe and Jetting Recommendation
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[QUOTE="MXP1MP, post: 1020793, member: 20581"] I just had mine done also but I had mine ported for mid/top and race gas only head mod only had it back bout 2 weeks now. I'm still playing with jetting but I had to richen the main from the stock 410 to a 450 and went up two on the pilot to a 50 but i think i might go back down one to a 45. I left the needle stock in the middle clip position it runs good with these settings. edit: I forgot to mention my bike was stock the first time I ran it and I got a V3 since then. Compared to last weekend when it was stock other than the jetting changes and the 144 stuff I took it out on a trail ride to break it in. It's was in the 40's out but I wasn't getting on the pipe as much. The plug was black but not oily residue black so it wasn't totally fouling out just alittle rich plus I had the gas mixed at like 24:1 but it's now 32:1. I swapped out the stock reed block for a Vforce V3 and the bike runs better with it I can see where the stock reed block stuffer is alittle restrictive. Well I took it out to a local sand track new Mt St helens (yes that one) so it's a sandy/ash. Well I did a few plug reads and the first one on low speed was still showing alittle black but when I did a 3rd gear on the pipe/main it came out tan! I don't want to go any leaner I sized it the first time I had it on stock jetting. I was running trick 114 at 40:1 and only had maybe 40 mins on it when that happened. Thankfully Eric was awesome about it and fixed for no charge. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
06 YZ144 Pipe and Jetting Recommendation
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