Firstly, I`d like to apologise for thisnext post! I`m so sad that I made a little video because I was so pleased with the piston seal! This is the longest bore I`ve done and I can safely say that turning it between centres was a great suggestion, it is true all the way through.
My finger is over the end of the cylinder bottom and I`m getting such good compression that is blows my finger away or in the reverse direction, sucks the crank back around! I`m very please with this as you can tell. All my other piston/cylinder seels on my other engines have been pretty poor! This is the first to give me a satisfying pop when removed!