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Old 11-12-2016, 08:51 AM   #89
cheesy   cheesy is offline
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Join Date: Jul 2010
Location: Elburn, IL
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Wiped off a few more PO finger prints I didn't know about until just before we left for Puerto Rico. One thing done to improve performance is to remove the cats and mid pipes on late carbed models. That was done on mine and I didn't know it. A rejet is required, which wasn't done. I also had a slight leak on one float bowl. So new gaskets, too.

I only found out because I bought the 'Cylinder Head Temp' harness for the Trail Tech and pegged the head temp on a cold day. Pulled a plug and it was white. Checked the jets and they were stock, which, like the Chinese, the Russians set the bikes lean to get around US emission standards.

Which would explain the three washers on the needle. Two washers was too lean, after pulling the cats, so the PO added another washer instead of rejetting.

As I've learned with these beasts, baby steps when making changes. The stock set up is Keihen 130 main and 40 idle. The recommended set up is 132 main and 42 idle, with a caveat. The recommended set up is a base line and best to take it one change at a time. Some guys run 128 main and 45 stock. So I swapped out the idle jets to start. Backfiring through the carb when cold is gone and the low end feels better. So that's an improvement. Haven't gotten out on the highway to see if I need to up the main yet but that will happen sometime today.
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07 Hi Bird Enduro-Flown the Coop

07 Ural Gear Up
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77 VeloSolex 4600 V3
73 VeloSolex 3800

I'm making this up as I go.-Indiana Jones

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