Um.
Where's the pumper carb?
Well, I couldn't let this go. I literally built this bike around this engine/ carb combo. But im also stubborn and refuse to cut and re locate the petcock on the near mint cr125m tank. So I did the hard route and made up a petcock adapter. I bought a petcock with the proper 16mm nut. The way these are designed means that once they are assembled, they don't come apart without destroying the petcock itself. They have a steel spring ring that expands into two concurrent grooves, one in the i.d. of the nut, and the o.d. of the petcock body.
Here's a few pictures to show how little clearance there is to work with.
So I basically needed to kick the outlet over to the left, with about .680" total distance from the outlet to the top of the carb. I used the old south bend lathe and 4 jaw chuck to turn a round piece into a cube, then whittle it down to the shapes I needed from there.
I was very happy when the nut snap ring went together properly, as once it's on, the only way to get it off would be to destroy the piece I had just made. I also bored it to utilize the in tank filter that came with the petcock.
And it fits. Clearance is clearance right?
And I have this petcock on the way, which will thread into the 1/8 not hole that I put in the manifold
Funny how something as simple as a petcock has been one of the bigger challenges on this build so far.