"More like a connecting rod or two got bent from hydro-lock. Once the head is off, use a height gauge and dial indicator atop the deck to compare TDC piston height."
Went past this afternoon, he's working on something else - I think he knows he has big problem with his tractor and he's putting off opening it. He says it does run, but smokes a lot and has no power. I doubt running it will improve matters, and in fact will probably make things worse, but I kept my mouth shut because he's a "bit" sensitive about it right now.
Water ingestion into a running engine is almost invariably bad news. On the MB newsgroup there is a sad tale of a guy who played this game with an AMG 6.3 CLK. That's a 6.3 liter hand built high performance (big buck) V8, and each engine is signed by the guy who built it. You can buy a replacement engine from MB, it is $55,000 plus freight and installation. (Bargain day. I'll take two, please.)
Engine was toast - several bent rods, cracked the block, blew both head gaskets (early 6.3s have a weakness there, it's been fixed on newer ones). Of course everything is assembled with torque to yield bolts and there are a LOT of them. Basically the only thing still good was the dipstick. Someone repaired one of these, the parts bill alone came to $19,000 and he did all the work himself - and it was an astonishing amount of work. He had the MB mommyvan, the engine comes out the front, on the CLK, it comes out upward from the engine bay.
Anyway, his insurance company said no way, jack, he insisted on keeping the car, they went round and round and eventually they agreed to buy him a used engine.
It went downhill from there . . .
Parts yard in Oregon (he's in Texas) insisted they had exactly what he needed, insurance company paid and told him OK, we paid, now go away. Except the engine wasn't an AMG 6.3, it was a standard 5.5 out of a sedan, mild cam, and on a good day, maybe 2/3 of the HP the AMG engine was good for.
Bolting on the AMG parts doesn't do anything extra to the 5.5, all the hot-rod goodies are inside the 6.3, and they won't fit the 5.5.
This has been going on over two years to date, and is nowhere near being resolved. We should count our blessings.
Best Regards,
Mike/Florida