General Category > Quadrajet Carb Talk and Tips

I messed up my atp screw

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spluhar:
what's the best way to remove a screwed up atp screw (1975 chevy truck carb 7045214).

429bbf:
wecome to chp ive never broke one off.i heat them till the locktite lets loose that they use to hold them in place. if i had to take a broken on out i would drill it.i would use a drill the size of the outer bore to start with so i could mark the center of the apt screw . then i would start with a small drill bit and work my way up in size.your still going to have to heat it or you will break the tap off. another option would be to drill it out and get an external on from cliff.

spluhar:
I cut a new slot in the atp screw and heated it with a hand-held propane torch for 40 mins off and on (6-8 mins at a time).  It won't break free.  I actually melted the screwdriver handle to where it was turning to mush and rotating. Any suggestions?

Ethan1:

--- Quote from: spluhar on September 09, 2013, 11:16:56 AM ---I cut a new slot in the atp screw and heated it with a hand-held propane torch for 40 mins off and on (6-8 mins at a time).  It won't break free.  I actually melted the screwdriver handle to where it was turning to mush and rotating. Any suggestions?

--- End quote ---

 How about using a flat screw driver bit, with a socket, extension and ratchet? That would give you a lot more leverage at least.

spluhar:
I'm trying not to break the screw again.  That's how it broke the 1st time.

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