tubman
Well-known member
It's starting to get a little chilly up here in Minnesota and it seemed like the old Ford took a little more cranking than usual to start in the morning. Since I have a Rochester 2G on a Merc manifold using the Merc automatic choke mechanism, I thought a choke adjustment was probably needed. I think I have it right now, but that brought to mind the fact that Mercury's have two choke types, divorced and regular.
Knowing that some are interested in the "2G solution", I thought it might be time to shed a little light on the choke situation. The automatic choke works great when installing these carburetors, but just won't work if the carb doesn't match the manifold.
I have what I refer to as a "regular" choke on my car, as the choke mechanism is mounted on the carburetor, with a tube running from a hole in the manifold to the choke housing. Fortunately, the Merc and Rochester choke tubes are the same diameter while the Merc is a little longer. Connecting a choke of this type requires the Merc tube to me shortened a bit and a little bend tweaked to mate it to the carb mechanism (First picture).
Other Mercury's have what I refer to as a "divorced" choke. On this type, the choke mechanism is mounted on the manifold itself, with a rod running up to the carburetor. Connecting the choke takes only a slight bend to be made to the actuating rod to make the whole thing work, The second and third pictures show the mechanism and carburetor required.
Hopefully this will help someone in selecting the proper carburetor to go with the manifold. I've also noticed that the number of posts has decreased lately and thought I'd add some filler.
Knowing that some are interested in the "2G solution", I thought it might be time to shed a little light on the choke situation. The automatic choke works great when installing these carburetors, but just won't work if the carb doesn't match the manifold.
I have what I refer to as a "regular" choke on my car, as the choke mechanism is mounted on the carburetor, with a tube running from a hole in the manifold to the choke housing. Fortunately, the Merc and Rochester choke tubes are the same diameter while the Merc is a little longer. Connecting a choke of this type requires the Merc tube to me shortened a bit and a little bend tweaked to mate it to the carb mechanism (First picture).
Other Mercury's have what I refer to as a "divorced" choke. On this type, the choke mechanism is mounted on the manifold itself, with a rod running up to the carburetor. Connecting the choke takes only a slight bend to be made to the actuating rod to make the whole thing work, The second and third pictures show the mechanism and carburetor required.
Hopefully this will help someone in selecting the proper carburetor to go with the manifold. I've also noticed that the number of posts has decreased lately and thought I'd add some filler.
