Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Carburetor

What are you running for the regulated fuel pressure, 2, 3, or 4 psi? What is the recommended on a S&S? Probably 99% or greater S&S carbs are used in a gravity flow setup, not a fuel pump setup.

Yeah Mikunis run pretty low, at least in my experience. Both cars and scooters. I'm running that same Malpassi filter on the MG, though it didn't get the pressure down low enough for the Mikuni on its own with the pump that it had.

I'd definitely be interested to know what this setup ends up running as well, especially to see what it does on a dyno. There is something to be said for the simplicity of a carb, and mikunis are a breeze to work on.

Î understand why the S&S super G was replaced by a mikuni
The super G is 48 mm diameter inside And the mikuni is 53 mm as the admission collector. Î must adapt it.

Which mikuni is running 53mm? My go to is the HSR but I they top out at 48mm as well.

Sorry the mikuni pipe in caoutchouc used is 53 mm as the admission collector fixed with origînal screws And it is fixed on the Carburetor by a serflex like motorcycles .

Ah I get you. Cool cool. So is that a 48mm HSR then? If so I'm definitely curious as to how it performs.

On the way..
Inserts for injection holes

Insert