Pete, It doesn't look rusty but it sat outside, without heads, for many months. I'll try the Coke.

thanks

Steve

Can you tell if the cylinder is rusty? If that is the problem you could turn the block upside down and fill the cylinder with a weak phosphoric acid ( like COCA COLA ) and give it time and some occasional heat. Pete

I'm tearing down a 312 block and there is one piston that will not come out. I've tried hitting it out the top, the bottom. I've used a wood block, a steel chisel and lots of PB Blaster. The piston is in #2 cylinder and is at the TDC position. Any suggestions would be greatly appreciated.

Steve

Steve