So my engine blew up....

[Jason@DSG]

It's a new market, they may have checked it out. Probably one of the first, or very few blown engines.

It sounds like a hydrolocked situation unfortunately. Water gets in, compression cycle starts, water can't compress, bent rod

It would take a lot of water so it must have been one hell of a puddle, but it happens. At least you got a new engine!

[pche]

Originally Posted by Dephective

It's not an absolute failure in the event of a hydrolock, no. But the massive knock generated from trying to compress a non-compressible liquid, possibly a few hundred times (revolutions), while running under any kind of throttle is where the serious damage would have been done. When cranking the motor, the torque generated by the starter motor is not even close to even idle. Those start attempts if anything rid the combustion chamber of the liquid and reduce stress on the internals.

There are lots of theories as to what to do during such an event, and I find that you're no better off doing one over the other in reality. IF a rod is bent, a piston hits a valve, or a cylinder gets scored, you're fucked and no amount of fluid change or inspection is going to change that. Either way, you'd save yourself a wait for a tow truck and potentially the bill if you don't have AAA. Limp home and park her till she can get looked at to at least salvage the block assuming the cylinder isn't scored.

Saw your earlier post how you got away with driving your Mazada home. That's great that you got lucky some how. However, you shouldn't be suggesting people to do what you did just to avoid the wait and bill for a tow truck when it's possible the engine might still be saved.

Starter turns the flywheel which is bolt on to the crank shaft. When the crank shaft turns a full revolution, at least one cylinder completes a compression cycle, given the timing is on, if there's water in there, it will bend the rod.

Changing the oil before cranking the water out is because oil and water don't mixed. During start up, if the oil pump sucks up water in the pan instead of oil, that's enough to wipe out some bearings. I see it all the time in Subaru engines with severe internal head gaskets leak.

Anyway, to each his own. IMHO, it's worth the 100 or so tow bill to at least have a chance to save the motor.