It could just be corroded, or heat altered....
use LOTS of penetrating oil, and turn it back in & out a few times... if it
turns a bit; wel; it should turn more.

Cross threading is usually a problem going in - once in, it's already created
new block threads... Slow, and in & out....

On 1 Jul 2006 16:26:45 -0700, "wingspan" wrote:

I bought a 1976 Johnson 35 on an old boat at what I thought was a good
price. Several days deep into the restoration project, I find that I
have a seized bolt in the water pump impeller housing. The other three
came out fine, but that last one is extremely difficult to turn. I did
get it up a couple of threads and tried to get some Liquid Wrench to
run down, but I'm afraid it's (a) galled or (b) cross-threaded. What I
REALLY don't want to do is break it off in the lower unit casting. Any
suggestions for getting it out intact? Would heat from a propane torch
(a) expand the aluminum casting enough to remove the bolt or (b) damage
the lower unit casting?

Thanks in advance!


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