Before trying heat and acid; break the pistons. The rods are the pricy valuable parts. You might be able to drive the broken pistons out [ break to either side of the wrist pins]. This one was so simple I didn't think of it right off. sorry.
You can apply heat to the pistons [ cutting torch ] [ DON'T DO THIS ONE IF YOU HAVE A CYLINDER FULL OF BRAKE FLUID] The aluminum will give up long before the block. Start in the center and work your way to the edge. Best done outside. Method #2 concentrated sulfuric acid, really, REALLY, want to do this one outside! Method #3 Hot tank it with caustic for about a week. If the caustic is fresh, might not be any pistons to worry about. Finally, the block might not be shot. I've done a bit with FE's. I've never seen an fe that couldn't be bored to stock 406 bore which is .080 over stock for a 390. Oversize 406 pistons can be had also. 406 pistons will also have larger valve reliefs for gt/pi/cobra jet heads. Hope this helps, do methods one and two outside, and use normal caution, take safety precautions. I lied, I did see one! The spirolock came out and the pin scored the cylinder to a depth just shy of 1/4 inch on a 300 v8 industrial engine. bob
02 edge 3.0 s/c manual 3.27 L/S, stock rims w 235 75 15's , e-fan mod , Underdog underdrive pulley , trac lock installed, hafta do somthing about those f-code t-bars
Last edited by BOB; 05-05-2006 at 07:52 PM.
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