weezzell_5400

I have a gm inline 6 250 ....and it came out of a boat that sank ...well was taking it down to bare block and they cylinders were rusted at the tops of some of them so i figured that i would push the piston through the bottom and then felt really stupid .....as it is now stuck above the main post .......and the rings have spread out .....what do I do ....please help.

oldchevy

The pistons should come out from the bottom without the crankshaft in the way. If there is room enough, put a piston ring compressor on the rings so that you can push them back up.

Camaro 69

Snap the rings off.

old dog

the only way the pistons go in or out of the block are from the top !

03SSLE

Apply a 50/50 mixture of naval jelly and Coke (or similar soda) to the rusted area of the cylinders and let it sit overnight. Use a scotch brite pad soaked in oil to remove as much of the rust as possible. If needed, remove the ridge from the top of the cylinder with a ridge reamer. Then (as previously mentioned) remove the rings from the piston and push it out through the top of the cylinder.