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Dave,I looked at your marked up print. I agree I believe you have found the oil drillings for the camshaft bearings. I also believe you can see the shape of the full length oil passage under your red line. Nothing wrong with listening to another opinion and revising your own thoughts. That's team work.Mike
If we keep looking in the right places we will find all the answers. The problem is always in finding the right places.Mike
While googling this subject I stumbled over those two engines :http://blog.hemmings.com/index.php/2015/10/30/kinetic-sculpture-internal-combustion-style-modeling-the-porsche-904-and-917-engines/Sorry - but no pressure Dave
Dave,That Wallaby gives you time to think about the 917. Poor Wallaby relegated to distraction while you figure out the flat 12.Art