hi Jack,
I was reading a book about old car restoration experiences one time, and a
man had the same problem as you are having. If my memory serves me
correctly, he ended up removing two spark plugs and welding rebar in the
shape of an upside-down L onto 2 old plugs. He then screwed the rebar plugs
back into the head on opposite ends, set a jack ON TOP of the studs,
connected a length of chain to the rebar L's on each end, and then jacked up
the middle of the chain until the head broke loose.....make sense? I think
it would work quite well. It worked for him.
Aaron
>
>Thanks for the suggestions on the parts separation issue. Lots of
>suggestions to use Kroil -- I'm definitely going to buy some.
>
>We finally separated the second head from the block this afternoon,
>using ever-increasing sizes of wedges, penetrating oil on the studs, and
>applying vibration from an air chisel with a blunt nose to nuts screwed
>to the studs. Egad. I'da thunk since we're in the 20th century, almost
>the new millenium for Pete's sake, that more satisfying means would be
>at our disposal. This technology is as bad as fastening pieces of wood
>together by bashing nails through them with a hammer. Ugh.
>
>Several asked what I was working on - delete now if not interested...it
>is a 1935 Packard V12 engine. It was "stored" outside for a number of
>years. We are trying to salvage all the parts possible to use in
>restoring some other cars.
>
>The Packard V12 looks pretty mundane on the outside -- flathead V12.
>However, the sump, heads, and front casting are aluminum. The valves are
>in the block and are operated by rocker arms also buried deep in the vee
>of the block. The rockers are in three sets of four, mounted in 'valve
>blocks' and have an automatic valve lash adjusting mechanism. When thes
>472 cu. in. engines are right, they are like turbines -- quite,
>powerful, vibration-free, and with so much torque you can leave it in
>high gear once it's moving.
>
>Like most classic cars, parts are very expensive. The valve blocks with
>rockers go for $1500 used. Crankshafts are awesome. Con rods are long,
>slender, and almost pretty. And all this is fed by one little bitty
>carburetor perched up on top -- by, would I like to give one of these
>engines 'the treatment'.
>
>I have the incredible good fortune to be employed part time by a 'patron
>of the arts' who is restoring about ten vintage Packards. My fears of a
>boring retirement have been allayed.
>--
>uncle jack
>Happiness is an interesting car to work on...
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