Piece of cake... get yourself a set of deglazing stones... they consist of 3 stones on a frame that kinda resembles a tripod, each leg of the tripod has one stone on it and is spring activated, you attach your drill to one end and squeeze the frame together, then place it in the cylinder… I've tried using a scotchbrite and oil and that worked for some of the rust but I still have alot left to remove. First degrease the cylinders completely and then pour Coke or Pepsi in the bores for a few hours. Engine looks original, standard stock pistons, smooth walls (after rust removed)/no visible crosshatch, maybe 0.002" ridge at top. However, when a water-based cleaning process is used, some type of corrosion inhibitor should always be added to the solution to prevent rust … The cylinder walls have alot of rust on them and it doesn't seem to be coming off. I have seen the .060" remove the rust … ;) Login now! They must have been the unlucky ones with open valves. Discussion Starter • #1 • Nov 14, 2011. Two cylinders have condensation-caused rust spots on the cylinder walls. Chat with others, create a build thread, post questions and answers. I have sprayed fogging oil in cylinder and turned over motor by hand and it seems to be ok but it is not cleaning off rust. If the pitting is severe, I’d say there may be a possibility of still saving the cylinders by having them honed by a reputable cylinder … I have had blocks with rust many times to work with and i have found that rust will leave dark stains that may never hone out even after .060" bored away. Looking at cyl wall its almost like chrome plating is off and rusted compared to remaining cyl wall … Re: Rust on cylinder walls...now what? Get involved! Simply apply the naval jelly to the steel wool and gently rub it up and down the cylinder walls until the rust … I would like to remove the rust best I can, then we will hone the cylinder walls … Cleaning your engine regularly reduces the rate of corrosion in your engine components, including cylinder wall rust pitting, and keeps the engine resale value high. Looking in exhaust I can see about 2 inch wide band of rust all the way to head. Remove that, and hone them out with a cylinder … However, if pitting is observed, then I’d recommend removing the cylinder showing the worst corrosion for further inspection. Logging in will also remove many of the advertisements, along with this notice. If your engine block is all clogged … 60 Posts . 1G Surface rust on cylinder walls … At the rings, there is also a slight line of rust. I bought an engine … Removing rust from cast iron heads and blocks usually requires a mild acid (such as citric acid or phosphoric acid). Cylinder walls had moderate surface rust. If there is minimal rust in the cylinder walls, it can probably be removed with a fine steel wool and naval jelly, which is a chemical for rust removal. A note for you on rust..and any who care to know. Ultrasonic cleaning can also dislodge iron oxide from the surface of castings. I can turn the engine without a problem and that helped to push alot of the crap toward the deck where I could get it. I light sanded with 320 grit to remove rust, wiped clean, oiled walls … Best bet would be to remove the pistons, hone the cylinder walls with a flex (ball) hone. If the ball hone removes all of the rust with just a few strokes, then install NEW rings and be done with … Beautiful car, terrific big straight 6. They must have been the unlucky ones with open valves walls... now what unlucky ones with open valves pour! Must have been the unlucky ones with open valves Starter • # 1 • Nov,. 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