[puttster]

I'd like to test fit a dual bowl master cylinder. I have a jar in there now. When I put the jar back in will I have to bleed it?

 

[puttster]

I'm thinking not, if I can get a suggestion for a way to plug the exit on the MC.

 

[danv]

The single pot jam jars are easy.
Loosen the bleeders at the wheels and let gravity do the rest. Might take a few hours if it got a bit of air in there.