Wat can I use to lightly rehone the piston walls and still use standard piston just to clear rust surface?

 

Yes. A hone will take a very minimal amount off.

 

A drill operated hone soaked in diesel or marvel mysterie oil can do a good job paying close attention while your at it . How heavy is the rust ? 1500 grit sand paper followed buy 2000 thousand grit with a little oil can be used if the rust hasent set in deep ..if the pistons are still in the motor kerosene or diesel fuel soak will help decay the rust

 

ya depends on how bad the rust is

 

I tried to turn the fly wheel and it wouldn't push the pistons half ill take a pic later and show u guys

 

ewww

 

I've used scotch brite pads in small engines

It it won't let the pistons move, you need to pull them out and get it done for real, not just a quickie by-hand. It's likely more than just surface rust and will cause ring sealing problems.

 

pour coke[no- not that kind] down the cylinders , drinkable cola it will eat the rust or vineger

 

brass punch and a sledge hammer.

 

If you have to force the pistons out with a hammer or the flywheel won't turn at all . Chances are rust has set and pitted the walls and pistons rings .. . At this point I'd say do a new set of rings and bearings it will save u a headache

 

make the block into a coffee table