True bore distortion cannot be measured with a dial bore gage. Icometer (iner-countour meter) measures true bore shape every five degrees around the bore.
Pat Gagues – Measuring for bore distortion
Less Wear and Oil Consumption through Helical Slide Honing of Engines by Deutz
Deutz and Nagel found a solution for the expected cylinder unit wear on the existing engine, which not only eliminates the potential future wear problem, but also
contributes to the important economic considerations of oil consumption and maintenance intervals.
Torque Plates – Are they worth the cost and STRESS?
When and how to use a torque plate.