When rebuilding an engine, you often find rust in the cylinders. Before installing your pistons and new piston rings, it is essential to remove the rust so that the piston rings ride smoothly against the cylinder wall. If you don't remove the rust, you can cause piston ring damage, which will make your engine rebuild a waste of time.
Purchase a honing tool from an auto parts store. A honing tool is a shaft with numerous sanding balls at the end. The honing tool is placed in a drill and used to make the cylinder smooth and remove rust.
Place the honing tool in your drill and place oil on the tool.
Insert the honing tool in the cylinder and start the drill.
Move the honing tool up and down in the cylinder making sure to remove all the rust. You must repeatedly put engine oil on the honing tool so that the tool doesn't wear prematurely. You can use any standard engine oil weight such as 5w-30.
Clean the cylinder thoroughly with a rag and remove any dirt and shavings. Then place a coating of engine oil on the cylinder wall to ensure it doesn't rust while you are rebuilding the engine.
