Next I want to try my hand at stud removal.
The mayo engine has one broken stud which is why it was full of mayo, it also has one stud that's too gone to put back.
So there are two methods I have read, one is weld a nut on , the other heat with a blow torch and a self tightening stud extractor. With both impact wrench is recommended
Using a self tightening stud extractor means you have to work on a longer stud because it just won't fit low down and that means flex in the stud, if you weld a nut on you can cut the stud off low down reducing any flex in it and transferring the torque to the thread better.
So I started with an old early DG case and had a go, the early DG so I'm told had a different steel composition so more prone to corrosion but worth a go.
I'm starting with the blowtorch and self tightening stud extractor method.
P1060973 by
Paul_Barr, on Flickr
I clamped on the extractor first, probably not a good idea as it got a bit too hot, next time I will add it after heating.
10 minutes with burner on full chat
P1060975 by
Paul_Barr, on Flickr
impact wrench on
P1060976 by
Paul_Barr, on Flickr
and after quite a while not moving....
P1060977 by
Paul_Barr, on Flickr
time for another go