Autolite 2100 carb throat restrictor plate

[Anonymous]

Here is my Holley 7448 carb's throat:

And here is my Autolite 2100 1.14 where you can see a restrictor plate up against the float side of the throat.

Should I remove this? If yes, how? I'm thinking this may be causing the strange sucking rattle sound from the carb.

 

[Shrinkdude]

Isn't it bolted down?
The one I have is held down by a big flathead screw and is solid when you try and move it.

 

[Anonymous]

It's in there good, I'm thinking it may be causing the weird sucking rattle as air and/or fule gets pulled into the carb around it.

Should I remove it?

 

[CZLN6]

Howdy Steve-O:

The plate is a diverter plate and it can be removed by loosening the screw that holds it in place. You must remove the carberator top to access it. Remove the plate and return the screw which holds the whole idle cluster in place and is the fuel flow channel as well.

The plate diverts incoming air away from the accelerator pump squirters, so that the squirt extends out into the middle of the venturi boosters- for better atomization. You can remove the plate. You will likely not notice it is gone. removing it may increase CFM slightly.

If it is loose it could cause your rattle. If it is tight it can't. Remove the top cover and check it out. Be careful to not tear the gasket when you remove the top, or have a new gasket ready. If you can reach in a wiggle the plate, it's a good bet. If you can't dont waste the gasket.

Adios, David

 

[Anonymous]

May have found the source of the noise....

I pulled the top off the carb to check around inside the fuel body. The air divertor plate is on tight, no rattle there.

The fuel float looks like brass (?) and rattles very easily with a tinny rattle just like what I'm hearing when I move it. It sort of slides back and forth on the little post it rotates about.

Tomorrow I will get the car out of the garage, remove the air horn and check the float level and see if I can stop the rattle by holding the float still.

I think this could be it. If it is, perhaps a nitrophyl float will take care of it.

 

[Anonymous]

I vaugely remember reading somwhere that those plates did nothing but hurt performance... not sure though.

is there any advantage to a nitrophyl float?

 

[Anonymous]

It was a vacuum leak on base of carb.
SEE: http://fordsix.com/forum/viewtopic.php? ... ht=#264187