A newly machined E34 M5 head sits assembled and ready to be installed. The head was warped due to overheating but was straightened in our commercial oven bolted to a straightening Jig, then the head was resurfaced (clean up pass), all valve guides were replaced (instead of the expense of installing oversize valves) and a 5 angle carbide cut was performed on the valve seats. The head was also final tested on our Flow bench for accuracy and flow rate balance. All work was performed in-house.