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General Minitrail Talk
Tech Area
tuning challenge - off throttle issues
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<blockquote data-quote="fatcaaat" data-source="post: 171701" data-attributes="member: 1656"><p>Ok, here's an interesting one. I don't recall where I got this carb from, but it is sporting the wrong needle in it. The VM26's take a 5-series needle and this one has a 4 series in it. It is also about 10mm shorter than the correct size one. So, the good news is i have 4 different correct sized needles here and they are incrementally spaced across the lean-rich spectrum. So, I'm going to make a good bet that i'll be able to solve this issue. I'll start first with the stock needle that supposed to be in there as it sits in the middle of the road and start the tuning. I'll report back. I remember buying and working these needles to get my TRP176 dialed in completely. I'll report back. </p><p></p><p>But, for those that have that off throttle lean (or rich) sudco has 20 different needles for your VM26 and 13 for your VM20 or VM22. For those that want the ultimate in dialing in, you might consider some new needles to play with.</p></blockquote><p></p>
[QUOTE="fatcaaat, post: 171701, member: 1656"] Ok, here's an interesting one. I don't recall where I got this carb from, but it is sporting the wrong needle in it. The VM26's take a 5-series needle and this one has a 4 series in it. It is also about 10mm shorter than the correct size one. So, the good news is i have 4 different correct sized needles here and they are incrementally spaced across the lean-rich spectrum. So, I'm going to make a good bet that i'll be able to solve this issue. I'll start first with the stock needle that supposed to be in there as it sits in the middle of the road and start the tuning. I'll report back. I remember buying and working these needles to get my TRP176 dialed in completely. I'll report back. But, for those that have that off throttle lean (or rich) sudco has 20 different needles for your VM26 and 13 for your VM20 or VM22. For those that want the ultimate in dialing in, you might consider some new needles to play with. [/QUOTE]
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General Minitrail Talk
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tuning challenge - off throttle issues
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