Rebuilding A Case

By Staff

Jr. Pemrith Farm Lodi, New York 14860

When I started to re-build my 1929 cross motor Case tractor
25-45, I found that the exhaust and intake manifolds were in bad
shape. Bolting tabs were missing, one in take part on the head was
cracked, and there were areas where the old cast iron had burned
through. Re-casting was too expensive. 22 hours were spent with a
welder in re-building. Surface grinding was then done in order to
bring the mating surfaces into some kind of relationship. There was
still a lot of warp page in the exhaust port areas. Using 3
different thicknesses of compressed asbestos gasket material, I
made a lot of gaskets, and spent considerable time fitting them,
paying particular attention to the in-take parts. There were still
some open spaces on the exhaust parts.

I then applied very liberal amounts of silicon paste to the
mating surfaces, again paying particular attention to the intake
parts. The silicon can be purchased at any automotive supply store.
It is designed to repair catalytic converters and auto exhaust
systems there is little, or shrinkage of this material and the past
sets up very hard. It will take all the heat that the gas engine
puts out. I was very careful in drawing up the paste into any
cracks that still existed, and ended up with a tight manifold
system.

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