1957 rd-19 carb question

[Dave_79]

Hi all,
I have been reading for over a year but this is my first post.
Anyway i have a 57 johnson rd-19 that I'm working on for my duratech boat. I am having trouble figuring out if I need a gasket on the nozzle that goes between the upper carburetor and the float bowl. (The one that goes through the middle of the float). Diagrams I have seen for my model dont have one but there has been plenty of mention of a gasket that is supposed to be there. Which is it, and what do I need if anything?
Thanks

 

[F_R]

NOT required on your motor because it has an adjustable high speed needle, which can compensate for any leakage there. But a gasket IS required on carbs with fixed high speed jets which cannot compensate for the leakage.

 

[Dave_79]

Thank you so much!!

 

[Chinewalker]

I've always installed one in those, regardless. Takes some variability out of the equation...