Glad to hear you are making progress.
On Fri, Jul 8, 2011 at 5:55 PM, Bert Van Brande <bertvanbrande@yahoo.com>wrote:
> Not related to the plugs.
>
> I rented a small trailer and brought the 100 4 cyl
> engine to a shop in the "valley" here in SoCal to remove a broken generator
> stud from the block. These holes are drilled right into the water jacket
> so
> these studs frequently rust solidly in place. The stud was already broken
> when I got the car/engine. In an attempt to remove it I broke an EZ-out.
> So
> now there was a hardened steel bit in there as well. Ouch.
>
> I had another
> broken bolt in the exhaust manifold. I didn't even try, learned my lesson.
> Both items were fixed in 45 minutes using spark eroding or edm. A suitable
> electrode is used and an electric discharge or spark disintegrates the
> metal.
> Very cool! Here's a demo video on youtube:
> http://www.youtube.com/watch?v=JRxljmABXL4&feature=related
>
> This technology
> usually can remove studs, bolts, broken taps without damaging the threads.
> The thread was cleaned with a 5/16 BSF tap but there are a couple vertical
> nicks on the threads in my case. The nicks maybe not too bad to require
> the
> use of an insert or helicoil. I'll make sure to use thread sealant. I
> have
> Hylomar thread sealant (not the advanced formulation which I have as well)
> but I feel more for a Loctite or Permatex style sealant. I love to hear if
> anyone has good experience with these or other sealants.
>
> Overall I am happy
> with the progress as this was holding me up.
>
> Bert
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--
Ira Erbs
Portland, OR
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