Is the piston on the left in this picture a super eta piston?
And what about this one?
The reason why I ask is because one was identified as an "i" piston and the other as a "super eta". They look the same and neither of them look like the pistons shown here: http://www.bmwccn.no/rogaland/Mahle_m20.html
You can see clearly that one of the valve reliefs is significantly smaller than the other. I know that on "i" cars they are pretty the same.
I've been doing a lot of searching on this topic lately and there seems to be a lot of conflicting information. Is there anybody who has actually seen super eta pistons and who can clarify this once and for all?
For the record, I have never seen a domed M20 piston with only one valve relief cut (as the super eta piston is illustrated at the mahle link above).
EDIT:
Then there is this one,
Also identified as "super eta" but it has an even smaller valve relief.
And what about this one?
The reason why I ask is because one was identified as an "i" piston and the other as a "super eta". They look the same and neither of them look like the pistons shown here: http://www.bmwccn.no/rogaland/Mahle_m20.html
You can see clearly that one of the valve reliefs is significantly smaller than the other. I know that on "i" cars they are pretty the same.
I've been doing a lot of searching on this topic lately and there seems to be a lot of conflicting information. Is there anybody who has actually seen super eta pistons and who can clarify this once and for all?
For the record, I have never seen a domed M20 piston with only one valve relief cut (as the super eta piston is illustrated at the mahle link above).
EDIT:
Then there is this one,
Also identified as "super eta" but it has an even smaller valve relief.
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