THe particular block I glued together just had small cracks around the holes.. The blocks that had chunks broken loose have long gone to be melted down and made into a Prius..
Brazing was actually my first choice at repairing.. It'll actually draw into a crack like solder... However I wasn;t able to get things hot enough for it to take properly.. Or probably more to the point, I was afraid to get things that hot... Had I had the engine in pieces I may have tried it..
It wasn't uncommon back in the day to tear down an old Willy's F-Heads and see brass between the center two head bolts on the deck.. I've seen alot of other early engines that have been brazed back together as well.. Hercules ZXB and ZXA's, an old Pontiac I-6, etc.. Of course most of these engines were low RPM and low compression.. I'm sure the alloys were different too.. The alloy used on the VW engine seemed to dissapate heat much better than alot of that older stuff, I could barely get it glowing...
Rabbits & Caddys were built in an old Ford plant (I think) in New Stanton Pa from 1978 - 1984... Something to the tune of 2 million IIRC.. 1981 was the first year of the 1.6, and the only year (other than some 1982 carry overs) they had 11mm head bolts..