also used for the jigs as they have line up finger on the fixtures when they weld the bodys together
making people scratch there heads for 40 years and ask me why??? ..
moose , your right its supposed to be iron, but when they use recycled materials the carbon content can drop to a steel alloy range ( uneven mix in the alloy from not stiring the molten metal with gas, fluxing or improper alloying of the metal ( burn off too much carbon or not enough added to...
inner grannular corrosion or lamination of the steel , autozone rotors are made in china , so I wouldn't expect much other than this as the material is probably barely in spec for the designed use , mexican cast roators are the same way , as are alot of the oem Gm ones , best rotors made now are...
a little late than never , ultrasonic cleaner , as blasting can hide cracks in the gears by peening the surface over , ultra sound cleans baked on carbon off quick and degreases real good so you can Pt test them
making people scratch there heads for 40 years ..
have you checked DOT CFR49 for the regulations?? as they will cover specifics on braking sytems
go broke try to go 150 mph and if it will fit drop it in, if it dont get a plasma cutterand the welder
