Posted by landlord7012 on April 11, 2008 at 15:42:36 from (206.40.110.229):
I'm tearing down my H motor which was stuck from sitting 25 years under a leaky roof. With the head off, cylinders 1, 2, and 3 don't look too bad and I should be able to free them with little or no force. Number 4 is "petrified" from being full of some muddy-pulpy gunk and will require brute force to free. I plan on replacing the liners, pistons etc. anyway so my question is this: do I need to free that piston up or should I leave it in and pull the motor and just unbolt the rod from the crank and pull the piston and sleeve together? My thinking is to save the abuse to the rod and crank if possible (and a little time and energy :) ).
I must add that I am glad I listened to those who say "take the head off" 'cause I couldn't imagine the damage I would have done if I could have freed it with all the cocktails I used. The inside of the manifold looked like a cave full of stalagtites and stalgmites. I'm not criticizing those who have freed motors without disassembling them as I'm sure there are varying degrees of "stuck" but just acknowledging the fact that sometimes haste makes waste. Pulling the head put a whole new light on things!
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