I had one with a broken head gasket, and cracked head because of overheating. (broken hose) rods were fine.
I also saw one that had the 10mm bolts that hold some plate under the crank come loose. the bolts swirled around in the pan until one managed to get through the screen. it went into the oil pump and busted a hole in it. engine lost oil pressure, rod bearings didn't get proper lubrication, engine failed. rods were still fine...

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1964 datsun 1500
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this is where I quote some dude, so I look smart because of quoting that dude that said something smart once