broke the HB bolt

[TangerineGT96]

i got a new set of under drive pullys for xmas and broke the harmonic balancer bolt in the crank. soo my question is would it be more easy to pull the motor out and fix it or fix it in the car i have all the drill bits and taps just need some ideas or something

 

[billfisher]

drill it and easy out the bolt.

 

[TangerineGT96]

drill it and easy out the bolt.

do you think and easy out would get it out bein that i broke the bolt tryin to get it out. i used the bolt that steeda gave me to set the hb on the crank. i got it to turn alittle and then it broke

 

[the98stang]

do you think and easy out would get it out bein that i broke the bolt tryin to get it out. i used the bolt that steeda gave me to set the hb on the crank. i got it to turn alittle and then it broke

The bolt will need to be rethreaded. Not a huge deal.

 

[LaserRed01GT]

Believe it or not this is not all that uncommon. This happens because people do not use a thread chaser on the crank threads before re-seating the HB. There is always junk in the crank threads that needs to be removed beforehand.

There are lots of little tricks. Easyouts, tack welding a bolt to the broken bolt, heating carefully around the broken bolt, drift punch, etc. MAC and Craftsman both make a nice EZ-Out set. They have the reverse drill bits on one end and then the corresponding EZ-Out on the other. Sears has the Craftsman set.