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81 GS1100 with 29 smoothbores.

It's a new K&L petcock, I can barely turn it bare-handed. This bike loves to mess with me. I'm enjoying learning about it, thanks for all feedback.
 
I see I needed to make an update.
All of the data from my exhaust probe was corrupted, so what I believed then, was bad information. I also got a set of RS36's and the exhaust probe said they were also rich, the plugs didn't agree but I dropped a needle slot and a jet size.
Recently I made a 2.5" stainless steel O2 sensor adapter that fits between the 4-1 header collector and the muffler on the Kerker. Now the AFR readings are more consistent and after living with the gauge for a while I can see that the "as delivered" carb settings were probably correct.
I've now returned the jet and the wide-open throttle numbers look good, part throttle was still lean so yesterday I returned the needles to the middle slot, where they were and am hoping for some dry weather for a last good ride before winter puts an end to it.
I also got a set of Oval K&N's for it, I'm looking forward to watching the AFR changes in a side wind. If needed, I'll make an air-box type of wind control for them.
Why did I do all of this? Even this old dog enjoys learning and fabricating. I still have not been to the drag strip on it. Am I Chicken? Probably yes. I have made the clutch slip iin second or third gears on an industrial road so with traction I'll probably find that it needs some work.
 
Today I rode with the wide band O2 sensor and again the A/F ratio was nearly 2 points different depending on if I was going into or with the wind. With the wind from the front-left it read 12.2 to 12.5-1 when I turned around and rode with the wind at my right rear the ratio got over 14-1. I can only attribute it to the effect of the wind on the pod filters on the 29's. I can see where the factory airbox is a solid design. Next, I may make a removable wind shield just as a test.

Pod filters and open bell mouths are notorious for this. I remember tuning my 83 GSX750E (16" front wheel) back in the day after fitting a nice set of chrome cap oval K&Ns and an air jet correction kit, and being amazed that I could effect the mixture at cruise by changing the position of my knees. Then in a rainstorm the K&Ns got soaked and it blubbered until they dried up enough to pass enough air. I swore off fitting pods after that. The minor top-end improvement that I'd occasionally access wasn't worth the grief.
 
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