Dear Gents,
Looking at some the photos over in Mark Electric's current thread on his Suzuki 2-stroke Rebuilds (
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=59526#Post59526) has got me wondering about the circumstances in which the oversize pistons and rings that are available for this motor are deployed...(?)
I ask the question because I have never really heard of a removeable cast iron sleeve on any motor being re-bored out to an OS size. I guess it must be possible, because they obviously must bore the centres of them at the factory when they are manufacturing them. But out here in the real world, removeable sleeves are usually just removed and replaced with a new specimen of the original-sized item when they start to wear, aren't they?
Trouble is - neither Suzuki nor GA seem to have ever offered replacement sleeves as a spare part. If they did, I suppose they wouldn't need to offer OS pistons and rings now, would they(?)
So the following questions beg (in my mind at least...)
1) Has anyone ever successfully re-bored one of these Suzuki sleeves out to the OS size?
2) If the answer to (1) is "no", is it normal for the sleeve of a low-compression specimen of this motor (with good seals, let's say) to wear uniformly enough to tolerate the available OS pistons and rings without squeezing them in and out of shape during each cycle? (possibly until they eventually break...)
I guess some measuring with a Bore Guage is going to form part of the answer, but any general or specific comments about the when's and the why's relating to this issue would be most interesting to hear.
Best Wishes and Many Thanks in advance,
Moby Mick.
