Plain Jane OEM nothing to see here rebuild

[RETed]

Originally Posted by JustJeff

I didn't notice this while taking the pics, but did while moving pics from smartphone to computer. Rust in the seal channel?

Yeah, that's not a good sign...
Assuming the irons were cleaned methodically, the rust was not there upon assembly.
It's safe to say that the rust formed after the engine was put together, so coolant was getting past the seal somehow...
Not good.


I've cropped one of your pics here...



Red circle shows possible sign of coolant entering the combustion chamber.
Looking at the orientation of the iron, this would be the "top" of the combustion cycle.
Blue circle shows the coolant trying to burn inside the engine - coolant doesn't burn well so it leaves traces like this...

This would be my guess where the coolant leak came from.


-Ted