Mikuni jet question

[matt glascock]

Reporting from the "day late and a dollar short" department, I've noticed (after 40+ years) a subtle (not really) difference in Mikuni jets. Some have an "R" designation after the flow rate which I assume means for round slide carburetor application. Furthermore, some have a flat face opposite the threaded end while others have a slight, dished-out concavity. Soooo...is there a functional difference in Mikuni jets based on the aforementioned variables or is a 340-jet-is-a-340-jet-is-a-340 jet regardless of "R"s and face contours? Thanks guys.

[Bullfrog]

I don't have a clue.

Ed

[matt glascock]

Well Captain, if YOU don't know, it's likely unknowable.

[Bullfrog]

Nah. The folks at Mikuni America or Sudco might have a clue (or more).
Ed

[matt glascock]

Great idea, Captain. I will shoot Sudco an email.

[thrownchain]

In my mind the 340 is for the diameter of the hole, shouldn't matter what the shape of what the hole is in is, round, square, flat, concave.