<VV> Seized Engine

[RoboMan91324@aol.com]

Hi folks,

I bought a turbo engine and the seller claimed that it would crank but not 
start.  When I received it, the engine had apparently been sitting quite some 
time without spark plugs and is seriously seized.  There were other problems as 
well but that isn't part of this story.  What has been done so far is I pulled 
the top end and oil pan off and mounted the engine on an engine stand.  I 
have been turning the engine on one side in the AM and squirting PB Blaster into 
the spark plug holes up top and the inside of the cylinders on the bottom.  In 
the PM, I flip the engine to the other side and repeat the process.  I have 
been doing this for the last week and I still can't break it loose with a 
breaker bar.  I am concerned about breaking the breaker bar which is no big deal or 
snapping the front bolt on the inside of the crankshaft which is a bigger 
deal.  Does anyone have a suggestion on what else I can do to get this thing 
loose.  Is there another product other than Blaster that someone can recommend?  
Is it advisable to pull the heads and beat on the top of the pistons with big 
hammer and a block of wood?  

Thanks in advance,
Doc