L-4 Kingston carburetor seat

boondocksdrew

New member
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I had a tough time removing this seat and probably should run a tap in there to clean up the threads.

I thought there would be a new seat in the rebuild kit I have but it ended up needing to be ordered separately so I don't have it yet. Anybody happen to know the diameter and thread spacing on this?
 
I had the replacement ordered already, it looks like the one pictured and identical to the mangled one that came out, so it should be original. I wonder if the "two ball" type was the part in the kit I didn't recognize.

The problem is just that the threads in the carburetor were slightly damaged, so I need to run a tap or at least a hard bolt of the right size in there to clean it up so I don't damage the threads on the new seat.

The new part arrived so I'll just take the seat into Lowes and use the bolt sizer to figure out what I need.

Does that copper washer go under the bottom of the seat? Don't recall that coming out with the old one, I'll have to look again.
 
For future reference, a 3/8 - 16 tap worked to repair the seat threads.

Since the carb had a lot of pitting and surface rust, after it came out of the dip bucket I hit it with a wire dremel brush. Then after taping off the openings, I coated it with POR15 fuel tank sealer. I've had good results with regular POR15 so we'll see how this works out.

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