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Discussion Starter #1
The piston on my motor decided to take a look at the world from the inside of the combustion chamber! Is this typical of the Kohler Courage 20HP?
 

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Yikes.........................that's serious trouble, sorry to hear that. I haven't heard of any others with that problem. Others will soon chime in. anyway, welcome to the forums, this is a great place.
 

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Need more info than that bud.... What machine? What model year? How many hours? Which courage series; single or twin? I have heard of the odd issue with the Courage singles, which are a twin cam one of a kind in this segment. Courage twins are the same block as the Command.

Joel
 

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Complete conrod failure, wow. The world isn't perfect, so it does happen. I've heard of it happening on piston aircraft engines (which are typically limited to 2700 rpm) but never on a GT. I assume you'll need an new engine cowl too. I'd also check the engine mounting points too as the serious unbalanced vibration could have cracked those.
 

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Discussion Starter #6
The motor is 2 years old, single cylinder Courage, and was not over-reving.
It had plenty of oil and less than 100 hours.
One of the long bolts from the head to the crankcase broke.
The side of the combustion chamber burst open and the piston popped out.
Everything else went forward (valves, exhaust, etc)
 

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The motor is 2 years old, single cylinder Courage, and was not over-reving.
It had plenty of oil and less than 100 hours.
One of the long bolts from the head to the crankcase broke.
The side of the combustion chamber burst open and the piston popped out.
Everything else went forward (valves, exhaust, etc)
This isn't comforting to know for me & others with these engines, I have the Courage 18 HP single. I'll be keeping my fingers crossed I guess. Thanks for sharing.
 

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The only way to see that an engine is at the correct RPM is with a tach. Don't trust your ear. It will be wrong every time. No more than 3700 no load.
 
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