Most transit damage comes from a part shifting, not one big impact. Why restraint beats cushioning, protecting flanges and thin walls, what documentation should travel with the goods, and keeping packaging repeatable.
A jig proves the part is consistent, not that the car matches the drawing. Why two cars from the same line differ, how clearance and access are judged, what heat and movement do, and how to plan a test fit.
Not every figure on a drawing is checked equally. How critical dimensions are identified, why measurement starts from a datum, how flanges, bores and hole centres are verified, and what happens when one is out.
A boost leak often seals itself at low load and shows only under pressure. Pressurising the tract on the car, finding the escape with sound, soap or smoke, the joints that fail most, and confirming the repair.
Hardness describes how metal resists local deformation, and one weld holds several values across the joint. Why welds are read separately from parent metal, how a reading is taken, and what hardness cannot prove.
The first part off a new mould sets the standard for everything after it. Why it is inspected in full, what gets measured and recorded, how approval works, and what findings commonly trigger a change.
A bench flow figure describes a part, not the engine it goes on. Steady flow against pulsating real flow, why a bigger number is not automatically better, where restriction really sits, and what the figure cannot answer.
Liquid penetrant finds cracks that break the surface. How capillary action draws dye into a defect, what the method cannot detect, why surface preparation decides the result, and how to read an indication.
