74 2.7 rebuild troubles
 

I was planning on assembling my pistons and cylinders this weekend but have run into a problem. I purchased Goetze rings for my 1974 CIS 2.7 from a very helpful fellow pelcan. I was checking all of my clearances etc when I noticed that the two compression rings in each set measured the same thickness. In waynes book in the appendix it shows the middle ring as being thicker than the other compression ring on a 74. Did I buy rings for a different type of injection or what? The middle ring would have way too much play if I used this set. The ring lands are all in spec and the old ring measures much thicker than the replacement one but also falls right into spec for what the appendix specifies. Any help woud be appreciated.

The Euro 2.7 used 90 x 1.5 x 1.5 x 4.0 rings versus I think 90 x 1.5 x1.75 x4.0 for the US 2.7

Ohio posted this question in the tech forum and got an answer there.