busted exhaust stud
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Intermediate
Joined: Jan 2007
Posts: 31
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From: Texas
this is what you needed before you started drilling crooked and breaking off eazy outs in the bolt. this tool is awesome. I had an exhaust stud broken off and the indy used this. the drill is so close to size that after it is drilled out, you just reach in with a pair of pliers and pull the thread from the bolt that is remaining. makes life much easier.
The lower gasket is an O-ring. Unless you are really careless and pinch it you should be OK. A machine shop is your best bet at this point. The broken drill bit is the kicker.
Stellar HDF Member
Joined: Nov 2005
Posts: 3,183
Likes: 836
From: KMHT KFMY
It has been my experience that once you break a drill or a tap in a broken fastener during an attempted extraction you are FUBAR'd.
If it was on a bench you might have other options, but if it is in the frame it is time to admit you have reached your limits and tear it down.
Your options are paying a machine shop to EDM it out, or find a good take off head and replace the damaged head.
Personally I would find 2 good take off heads and send them out to have them milled just a C hair to bump the compression, and have them ported/polished/flow tested.
It has been my experience that the 88TC heads are severely flow restricted, and there are ways to get performance out of them when they are handed to someone that has experience with them. My HD guru has a guy that does nice work for reasonable money, if I ever have to pull the heads they are going to him.
I am currently looking for a good seat of heads as cores.
I just did S&S 509 gear drives with Fueling cam plate/oil pump upgrades, so now the next place to get a little ooomph is in the heads, and dumping the PCIII and going to a Zippers with O2 sensors
If it was on a bench you might have other options, but if it is in the frame it is time to admit you have reached your limits and tear it down.
Your options are paying a machine shop to EDM it out, or find a good take off head and replace the damaged head.
Personally I would find 2 good take off heads and send them out to have them milled just a C hair to bump the compression, and have them ported/polished/flow tested.
It has been my experience that the 88TC heads are severely flow restricted, and there are ways to get performance out of them when they are handed to someone that has experience with them. My HD guru has a guy that does nice work for reasonable money, if I ever have to pull the heads they are going to him.
I am currently looking for a good seat of heads as cores.
I just did S&S 509 gear drives with Fueling cam plate/oil pump upgrades, so now the next place to get a little ooomph is in the heads, and dumping the PCIII and going to a Zippers with O2 sensors
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