bolt extraction

SixFtUnd · 03-19-2009, 10:32 PM

I have the exhaust manifold off my truck have a stud snapped off flush can anyone get it out ? and how much would you want?

Hope Springs Hauler · 03-19-2009, 11:00 PM

An old man taught me a truck that you an try.

Select a drill bit that is barely smaller than the base size of the bolt (part without threads)

Centerpunch the broken bolt and drill out the center of it. Moderate to slow drilling speed with cutting oil works best.

Take a small screwdriver and chase the threads until they collapse and remove the remainder.

Get the proper size bottom tap and chase the threads.

Tj_Justin · 03-20-2009, 12:37 AM

They make reverse thread extraction bits that have worked well for me on the small stuff. Exhaust should be no big deal.

Wait until you break a tap off in the tailshaft of a 231 xfer case ;)

That is when you wanna break out the welder and weld a nut to the end and back it out slowly.

03-19-2009, 10:32 PM	#1
SixFtUnd Danny Beach Join Date: Jan 2008 Location: Cincinnati OH ( Price Hill) Posts: 481	bolt extraction I have the exhaust manifold off my truck have a stud snapped off flush can anyone get it out ? and how much would you want? __________________ 86 Ford Bronco

03-19-2009, 11:00 PM	#2
Hope Springs Hauler Join Date: Jul 2008 Location: Hamilton, OH Posts: 431 Images: 16	An old man taught me a truck that you an try. Select a drill bit that is barely smaller than the base size of the bolt (part without threads) Centerpunch the broken bolt and drill out the center of it. Moderate to slow drilling speed with cutting oil works best. Take a small screwdriver and chase the threads until they collapse and remove the remainder. Get the proper size bottom tap and chase the threads. __________________ 1988 Suzuki Samurai on propane FJ 40 axles (4.10) 5.14 tcase 36" TSL SX

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03-20-2009, 12:37 AM	#3
Tj_Justin Join Date: Nov 2007 Posts: 14	They make reverse thread extraction bits that have worked well for me on the small stuff. Exhaust should be no big deal. Wait until you break a tap off in the tailshaft of a 231 xfer case ;) That is when you wanna break out the welder and weld a nut to the end and back it out slowly.