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After every drive with my ’32 the garage would smell like raw fuel for a few days, the bottom of the Stromberg UUR-2 would be a bit wet. The gas was weeping from the fiber washers on the main jets. Upon inspection I found out that the bowl area was pitted where the jets were supposed to seat. To fix this I came up with a simple solution that worked rather well.
On my lathe I turned down a bolt that had a wide shoulder on it. I made the shank of the bolt (green arrow) the same diameter as the opening for the jet in the carb. Just enough clearance so I could spin it around with no play. Then I turned own the shoulder (red arrow) so it was .030 narrow than the recess in the carb base. After checking to see that it fit well I put a little valve grinding compound on it. With a long extension and a socket to fit my custom tool I spent about 5 minutes lapping the seats on the bowl. Afterwards it looked like a freshly machines surface with no pits and only removed a minimal amount of material in the process. With a new set of red fiber washers it does not leak at all. In my haste to test it I forgot to take a picture of the finished part.
