my experience removing exhaust manifold broken bolts
11-29-2010, 01:40 PM
#1
Launching!
Thread Starter
iTrader: (1)
Join Date: Jul 2010
Location: MOntreal, Qc
Posts: 213
Likes: 0
Received 0 Likes
on
0 Posts
my experience removing exhaust manifold broken bolts So I was afraid I was going to screw it up. Besides drilling through the head in one place everything went fine. Some threads are also worn by the drill bit. Hopefully they will hold.
Three bolts were broken flush or below the surface of the head.
I followed the posted suggestion of making a drilling template and drilled with a 1\8 drill bit first and then incrementally up to 11/64.
With a hammer I then jammed a torx T-25 (I think that was the size) bit in the hole drilled in the screw.
Finally I took a 1/4 inch ratchet and removed the screw.
A very important step is to shoot PB blaster on the screws for at least 4-5 days before the operation. Without that I don't think it would have worked as well.
Three bolts were broken flush or below the surface of the head.
I followed the posted suggestion of making a drilling template and drilled with a 1\8 drill bit first and then incrementally up to 11/64.
With a hammer I then jammed a torx T-25 (I think that was the size) bit in the hole drilled in the screw.
Finally I took a 1/4 inch ratchet and removed the screw.
A very important step is to shoot PB blaster on the screws for at least 4-5 days before the operation. Without that I don't think it would have worked as well.
