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Patrick L. · 03-27-2014, 11:44 AM

Funny you mention that. As a youngster trying to make a go-kart go faster I kinda did the same thing. I wanted to port the engine [580 West Bend 5 port] and the procedure is to square off the top side of the ports then raise them slightly. So, trying to top this and do one better I just turned it into a single port. It went like crazy for about 100ft.

As for rings turning on the pistons, they do. A couple years we fixed a little 0-200 Continental a fella was having trouble with. This engine had been returned to the rebuilder twice due to oil consumption and loss of compression. We found the cylinders very tapered, apparently enough to allow the rings to walk into gap alignment. We just straightened out the bores and the engine has been out running ever since. Every time I've seen an engine line up the rings [ that weren't pinned] I thought someone did it purposely, apparently thats not always the case.

03-27-2014, 11:44 AM	#8
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Compression ring position Funny you mention that. As a youngster trying to make a go-kart go faster I kinda did the same thing. I wanted to port the engine [580 West Bend 5 port] and the procedure is to square off the top side of the ports then raise them slightly. So, trying to top this and do one better I just turned it into a single port. It went like crazy for about 100ft. As for rings turning on the pistons, they do. A couple years we fixed a little 0-200 Continental a fella was having trouble with. This engine had been returned to the rebuilder twice due to oil consumption and loss of compression. We found the cylinders very tapered, apparently enough to allow the rings to walk into gap alignment. We just straightened out the bores and the engine has been out running ever since. Every time I've seen an engine line up the rings [ that weren't pinned] I thought someone did it purposely, apparently thats not always the case.