Quote:
Originally Posted by don3vor
I did notice that it has ,if I'm correct, S4 rotor housings . They have the Mazda Hiroshima stamp on top.
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Easy to tell:
Does it have the extra bung on top of the spark plug holes?
The S5 uses them for the knock sensor.
S4's do not have this threaded bung.
Quote:
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I took pictures of the inside of the rotor housings and wanted opinions on the marks left there in case there are any tell tale signs of anything.The housing with the darker marks is the front, the one with lighter marks is the rear housing. I also have pictures of the irons but will clean those off first before I post unless I shouldn't do that before I post.
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Hard to say from the pics, but those look like very high mileage rotor housings or inadequate internal lubrication (i.e. oil metering failed)...
When you run the fingernail over the entire width of the rotor housing, can you feel the scratches? Or, can you feel the wavy surface?
If it's not smooth all the way across, then those are junk, IMO.
-Ted