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How much knock before cam breaks? Kohler 8HP

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I was reading on a puller forum that if an 8HP K181 is operated with a rod knock, most likely the cam will be cracked.  The person stated that the 8HP is very unique and the connecting rod passes just a few thousands away from the cam compared to the big block engines.


Is this a correct statement?  I have rebuilt some k181;s back in the late 1990's and early 2000's and have not seen this happen unless the engine blew up.  

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That statement is correct. Connecting rod bolt tangs MUST be flattened just to give clearance. 

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