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2-cycle ring installation
On Wed, 10 Sep 2008 22:40:50 -0700, "Calif Bill"
wrote: wrote in message .. . On Wed, 10 Sep 2008 18:14:46 -0700, "Calif Bill" wrote: wrote in message ... On Wed, 10 Sep 2008 20:32:22 GMT, (Richard Casady) wrote: On Tue, 9 Sep 2008 17:33:28 -0400, "Lost In Space/Woodchuck" wrote: All depends if it's a steel, chrome, nicksil, or nicom cylinder bore. "TJ" wrote in message . .. I know that when new rings are installed in 4-cycle engines that it is generally recommended that the cylinder walls be honed to remove the glaze, so the the new rings will seat properly. Is the same true of 2-cycle engines? I expect it is, but I just thought I'd check. Most cars are plain cast iron: most outboards are plain aluminum. Casady Most aluminum cylinders have a sleeve of another, harder material. A "plain aluminum" cylinder wouldn't live very long. I think the only "aluminum" cylinder was the Chevy Vega. I think you are wrong about that, as well. The cylinder bore was silicon in early models and they later switched to iron sleeves. They had additional woes due to the iron head mated to the aluminum block. Was a high silicon content aluminum. Had to be injection molded and cooled quickly or the silicon would precipitate out of the aluminum and leave a soft aluminum surface. The problem was defective head gaskets. They were porous. Nope. The cylinders got etched leaving a silicon bore. The problem with the head gaskets was the different expansion and contraction rates of the iron head on the alumninum block. No gasket in the world could make up for that, as they found out. |
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