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Discussion Starter #1
Hey guys, so a guy on a ebay has a 250r cylinder ported by a company called SD? It has SD engraved on the jug & you can clearly see that it has been ported. Just wondering if someone has any info on it. Couldn't find nothing on google, possibly out of business? Wants $150 & it needs bored! Too much? Appreciate any input, thanks guys!
 

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I never heard of them. That's a tough call. Does it show any good pics of the ports? As you may know, buying used without credible work, can bite your ass.
 

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You can see a good shot of the transfers from the bottom, looks pretty good I guess. But yeah, that's what I'm afraid off. Might be a dune or a drag port, & that wouldn't do me any good!
 

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It also depends on what bore it is currently. It may only have 1 bore left.
I've been looking for a 250R cylinder and max bores (or close) seem to be the norm.
I've been looking at Eddie Sanders 310 kits. They are cheaper than I thought they would be.
 

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Discussion Starter #5
Dude, if you go ESR, from what I've read, get the cylinder unported & have somebody more reputable do it. Just google 310 kits & read up on them!
 

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There are many people who ceremoniously put their names on cylinders. The performance is all that matters, the word gets around quickly enough good or bad.
CR cylinders are a normal sleeve replacement; standard, larger or smaller bore.

John Tice
503-593-2908 Alternate 541-508-3944
www.smallenginemachineworks.com & www.nwsleeve.com
Turning Custom Cylinder Sleeves Since 1971

:thumbsup:
 
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