John
I have all the extractors and have tried all the tricks with and without a
welder. The problem remains that the studs are down inside a coolant jacket
in the corner so that even if you could drill them you would need a foot
long hardened drill to keep the hole straight. I have done this in shop and
no longer bother drilling  when its broken close to flush and tack welding a
nut to the stud fails
Bob
----- Original Message -----
From: "John Rodgers" <j_rodgers@charter.net>
To: "Robert Donalds" <bostneng@FCL-US.NET>
Cc: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, May 14, 2002 12:12 AM
Subject: Re: Head gasket job getting out of hand (

> Bob, When I was active in the aviation industry, the shops where I would
work, and even some guys out in the field, had little jigs that were
designed to allow one to set up and drill straight down through the center
a stud. After that a tool called and "Ease-out" was used to back the stud
out. The ease-out had a left-hand thread, sharp edges on the thread, and
it't pitch was extremely course, like maybe 1:3 -- one turn of thread in
three inches of length . Anyway, if the stud was drilled out sufficiently it
was usually not much more than a shell, and
> the thread of the Ease-out would catch, and get a deeper bite as you
turned the ease-out counter clockwise. I don't recall ever seeing a failure
when the stud was drilled right. And some of those aircraft engine studs -
especially on the big radial engines - were awsome.
>
> John Rodgers
> 88 GL Driver
>
>
>