Broken exhaust stud removal...

[Per Lindgren]

I've used the square extractors with great success myself, much better
than the spiral ones. Here is the ones I used, from K-D Tools:
http://www.mytoolstore.com/kd/kdspec06.html

PerL
87 Cq

Russ Maki wrote:

>Sounds like you have a well-earned fear of Ezy-Outs! Do you have the square
>ones, or the reverse spiral extractors?
>
>I used a square No. 1 extractor I bought at Sears to remove a broken brake
>bleeder screw over the weekend. After years of working with the *cringe*
>spiral extractors, the square extractors were a welcome discovery. 1/8"
>pilot hole, tap it in, turn and out it came. Took all of three minutes, if
>you don't count the overnight bath in penetrating oil.
>
>My local Sears stocks the square extractors with the machinist tools, by the
>way, not with the drill bits (where the spiral extractors reside. A single
>one was well under $10, a set of five was something like $25.
>
>HTH,
>
>Russ Maki
>'87 4000q
>
>
>
>>From: Gerard <gerard at poboxes.com>
>>Subject: Broken exhaust stud removal...
>>Reply-To: gerard at poboxes.com
>>Date: Mon, 3 Jun 2002 14:59:59 +0200
>>
>>Hi!
>>
>>Well, on Saturday I was test fitting the timing belt covers on my MC
>>engine along with the pulley and bolts and testing the fit of my crank
>>locking tool (2084) that I had made up a while back.
>>
>>I hadn't paid much attention to the exhaust studs before, but looked up
>>and noticed one was indeed broken off in the head.
>>
>>I just bought some stainless steel studs (+- $12 for 10). They had some
>>nifty stud extractors, but they wanted over $50 for them. I then bought
>>a new set of eezi-outs *cringe* and a new bit.
>>
>>I need some advice on how to proceed seeing I already experienced the
>>broken off eezi-out *cringe* story when rebuilding my turbocharger.
>>
>>I have a 3mm bit, but was thinking I should get a 5mm as well in
>>order to
>>use a slightly larger eezi-out *cringe*.
>>
>>Would it be wise to also attempt using some other method of getting the
>>stud out? I was thinking I'd get the engine on its side, flood the
>>region with penetrating spray, let it soak, drill the hole and use a
>>wide enough screwdriver to get the stud to move. This worked well with
>>some stuck bolts on my alternator. Just jammed the screwdriver into the
>>pilot hole and it gripped and turned the bolt out.
>>
>>Made me wonder what I paid the mechanic for!
>>
>>G.
>>
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