Re: Need engine help

Posted by Tom of Minnesota on February 09, 2004 at 19:07:14 from (165.247.253.103):

In Reply to: Need engine help posted by Bob Brademann on February 08, 2004 at 06:02:04:

Bob,
I had a similar problem with my B. For some
time, it was leaking coolant into the oil. I finally
pulled the head and discovered a large crack
running from the inside of the #1 cylinder to
the inside of the #4 cylinder. I didn't think the
water was getting into the oil through the
crack, so I called a Farmall mechanic friend.
He said to drain the oil, pour coolant into the
water jacket and place a container under the
oil drain. The next day, the container contained
several tablespoons of coolant. I repeated the
test several times, with the same results each
time. This meant the O rings on the wet
sleeves were bad. My friend said that, years
ago, they used to fix cracks like this in Allis
Chalmers and Farmall blocks by drilling a
hole through the entire block between
cylinders #2 and #3 an inch or two below the
top. Then they'd insert a threaded bolt. The
old-timers would then put some sealer on the
ends of the bolt, slip on a washer or two, then
add a nut on each side and tighten them until
the crack squeezed together. He said this
would hold things in place for a long time. But
because my O rings were leaking, I decided to
find a used block and then had a machine
shop build me a new engine. It cost 10 times
more than I paid for the tractor when my wife
bought it for me back in 1972, but I didn't care.
After all those years of yeoman service, I just
couldn't abandon the old girl in her time of
need. Now she runs like a young colt.

As long as your A wasn't leaking coolant, you
might get by with the old block. But I wouldn't
weld anything. Several experts told me that
once you weld a block, you have to have it
re-machined to make sure everything is
square and true. It's not cheap, they say. Try
patching yours. It might last for years. Good
luck.

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