General Category > Quadrajet Carb Talk and Tips

What's the Best Way to Remove Factory Mixture Screw Plugs?

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71vette:
I just went through this on a 1979 carb plate.  You cannot drill out the plugs (ask me how I know) at least with the drill bits that I have.  The plugs are hardened steel and the only thing my drill did was to leave a small shiny mark on them.  So the idea of drilling a hole and inserting a screw and pulling them out doesn't work.  So, I took a hacksaw blade and sort of cut a v notch on the bottom of the base plate where the plugs are.  Sort of chisel off the v portion of the base plate and then drive a sharp awl or similar into the plug and try to knock it out with a hammer etc.  You must use a lot of patience so that you don't crack the base plate.  I eventually got both plugs out and then I used small rotary sander to clean up the area where I used the hacksaw blade.  I'm sure there are different ways of getting the plugs out but I was able to do it this way.

slowpoke:
the ones i tried to get out were so hard i could not drill them with a cobalt bit. I had to drill into the aluminum and take a punch and chisel and keep pecking out until they broke out. they are extremely hard.

omaha:
 I may just try that "weld a gob on it method" I had never heard of that but I am goin to try it.
You know what would be great would be one of those stud welder machines like they use in body shops.

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