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Yeah the other block is toast. The bad piston was seized so bad I had to hammer it out with a sledge.
I will have to work on getting the studs out.
I found this response on another thread.
I have done this perhaps hundreds of times too. Heat the aluminum with a carburizing flame with your...
So I just pulled the head off and I am super confident that it’s the problem
For one the metal ring on the head gasket around the problem cylinder is torn/ broken
Secondly the head was likely warped because I broke 4 head bolts trying to remove them :/
I was slow and gentle and tried head...
Hi all,
I recently got ‘gifted’ 2 old 15hp yamaha outboards. One is siezed so I have dissasembled it for parts. The second one was in seemingly good condition but it wouldn’t run.
I tracked down the cause to it having no compression in the top cylinder. The other cylinder reads around 95psi...
