CV15S cylinder damage

A

Affordable in Indy

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Jun 30, 2020
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I have a customer who has a 20 year old John Deere SST15 with a Kohler CV15S engine. He ran it without oil and, well, you know what happened. I'm trying to put a new crankshaft and connecting rod in it. However, when the connecting rod failed, it impacted the bottom of the cylinder and broke a chunk out. There appears to be wear marks in the cylinder. I don't think the piston travels down to where the damage is. Can I get this engine running or is the crankcase unusable?
 

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I wouldn't bother with it myself. If it doesn't last very long, it will be a lot of money wasted, and your name will be associated with it.
 
that will be fine
get a die grinder or similar and make the hole smooth left right & top bottom so the edges do not break away
 
I agree with Bert that it will be fine. I would let the customer know what you found and let them make the choice on how to proceed.
 
With that lick I would be careful inspecting the crankcase for damage too. Usually here I find it at least cracked.
 
Ok, I have one more question. Do you think I should replace the piston rings since I have to remove the piston anyway?
StarTech said:
With that lick I would be careful inspecting the crankcase for damage too. Usually here I find it at least cracked.
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Ok. I'll give it another look.
 
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