Gary, I apologize if you've answered this already... is the rust in the area where the rings travel or is it above? I guess either way I'd lightly dust it with a scotchbrite pad or 400-ish grit sandpaper. If you have room wrap the sandpaper around a socket so you're not making a groove with your finger. Keep your strokes angular to the centerline of the cylinder bore, alternating to simulate crosshatch, never staight up and down. It is what it is... seal the piston edges using your favorite sealer (vaseline, molding clay, silly putty) clean up the rust best you can (as described above) without making the cylinder larger or out of round, clean up the mess, then rotate the engine over to see if you feel resistance when the rings pass over the affected area. If so you'll need to hit it again; repeat as necessary. If you were trying to kill a set of clocks at the drag strip or bomb a class index, you'd need to pull the motor and freshen it. For a cruiser you're probably just fine. I recently watched in horror as my girlfriends' dad cleaned up a 65,000 mile 413 I had by removing the heads and pan and hosing the thing out with Purple Power spray cleaner, a brush, and a garden hose. Cleaned the living daylights out of it (piston tops shiny, iron rusted as soon as it dried), dried it, oiled it and pumped oil through it, stabbed it in the car and it runs like a swiss watch. I'm not ready to abandon the clean room environment for engine assembly, but we're not doing neuro-surgery... SC -----Original Message----- From: Gary H. [mailto:spigot2039@xxxxxxxxxxx] Sent: Friday, September 04, 2009 12:03 PM To: 1962to1965mopars@xxxxxxxxxx Subject: RE: headless 383 Thanks, I don't have a fine cylinder hone though. Any other shadetree method to do this? Gary H. -----Original Message----- >From: Jeff Adams >You might also try a fine cylinder hone after protecting the piston >tops. > >spigot2039 wrote: >> ... I noticed a small area of rust in the top >> of the cylinder that was not visible from the 12 o'clock view. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.