What would happen if I used this as is?

[IDoSeaDoo]

Sent my cylinders to a machine shop I found on ebay ( seller by the name of xxwieslawxx ) to get bored. Despite his hefty shipping costs, he reused the same beatup box and packing to ship the cylinders back. Naturally, they got knocked around, and damaged not only the mating surfaces, but cracked a sleeve on the cylinder.
What, if anything would happen if I used this cylinder as is? I feel that this part of the casing is mostly out of the harsh conditions of the combustion chamber and is not responsible for holding vacuum... Would it fall apart? Anyone have experience using such a sleeve?

[bill321]

maybe a small bead of weld on the outside?? Just a thought

[GGG]

If those got bored then why are they all rusty and pitted looking?

[IDoSeaDoo]

Because I had them bored to the next oversize. I had already bought the topend kit so I could have the cylinders bored to that oversize. Turned out that the next oversize didn't take care of all the pitting. I didn't realize it was so deep... As for the rusty color, once I cleaned the oil off the cylinder, it rusted within minutes. I didn't even get a chance to wipe the moisture off before they turned brown on me. Just very light discoloration of the topmost metal.

So what are the effects of running pitted cylinders?

[jammin777]

i wouldn't run those, the crack can get worse and cause bigger issues, also the pitting will also lower compression and wont run right or at all in the water. unbeleivable the machine shop sent you those back like that, he should have advised you that they were shot in the begin with! I'd find another machine shop if i were you. that is shotty work and irresponsible imo. id get my money back and buy some good used cylinders and have it done right.

[Dixieboy]

Ditto the can't use a cracked sleeve. http://www.shopsbt.com/jet-skis/sead...r-sleeves.html hate to say it but finding a good machine shop on e-bay is like finding a best friend in the yellow pages. New sleeves are not that expensive even if you have to have it bored to fit.

[wkuadam07]

If it hit hard enough to crack, it has to be out of round. It's not going to run long before it scatters if you waste the time building it...

[lilman573]

Doesn't it look like it was done with the cracks?... Yikes.

[toxicgun]

I send mine off to fullboreonline and they always do a great job and they include the pistons. Maybe a weld and a resleeve will fix that problem.

[Myself]

If it were on my own machine I'd be tempted to drill a 1/16" hole right at the end of the crack and slightly chamfer the hole. It's at the very bottom of the bore where there is no compression pressure.