Quote:
Originally Posted by mwebb
those engines do not just up and pop head gaskets at 40k
unless
they were overheated
in fact those engine rarely pop head gaskets for any reason
they are very robust - so
there is a surprise lurking , that you have not found , look close around the water jackets of the cyl head , when zeros add the wrong coolant , or the pressure cap fails
they get cavitation erosion which eats into the aluminum head and under cuts the head gasket -
that would be your best failure scenario , otherwise
it was overheated when the plastic impeller broke off of the water pump shaft and the driver did not understand what was happening
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Betcha it'd pop a head gasket at over 20PSI of boost (stupid cheap wastegate) without damaging anything else... and since I'm the driver, I'm sure I understood what happened immediately and pulled the car over, shut the engine down and had it towed to the shop where I pulled the engine and replaced it with a new 2.0 crate engine with ARP studs and a water cut copper head gasket so it didn't happen to the owner, too.
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