"a compression load, not a shear load"
Originally Posted by Grumpy
The flat area above your red arrow........just above the step. I believe that the pin should be only put under a compression load, not a shear load. You should be able to "feel" for that area by threading the pin out/in while rotating the crank back and forth when the piston is about at BDC. When you can locate/feel that step you want to have the pin fully seated/torqued so that the end of the pin hits that flat area just "above" the step. If you can feel the pin bending (not a nice solid feel) at any time when attempting to break the bolt free........stop.
"you want to have the pin fully seated/torqued"
~ I can tighten this up but as I said before "the pin only fully inserts at TDC" i.e. when fully tightened at this position (the step) there WILL BE still about 3mm of thread showing outside the block! ~ OK?