|
Ports are...OK.
They are not the best, but I've seen a lot worse...
There are some builders who refuse to use the stock corner seal plugs.
So those will tell you it isn't a big deal yours are missing.
It's weird that only one side is missing...
hmmm
Gunk in the water passages are normal.
Never did a coolant flush recently, right?
It's aluminum oxide from galvanization of the rotor housings from dissimilar metals and an electrolyte (i.e. the coolant).
You can't really prevent it; you just gotta deal with it.
This is why coolant system flushing is recommended as maintenance.
-Ted
|