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Several processes, such as casting, forging, and pressing, were used in the manufacturing of the Honda NSX's aluminum chassis. For casting, a high grade method which utilizes program control of mold temperature was developed and put into practical use. For optimum forging, a selection of cold and hot processes were investigated and a process to save energy during processing was pursued. As a result, an overall weight reduction of approximately 50% was achieved.

The PVC(poly-vinyl chloride) underbody coating was specifically designed for the automotive underfloor area in order to prevent chipping damage as well as the onset of rust propagation from a scratched point. This superior anti-chipping performance can also be achieved without increasing film thickness of the PVC by balancing film strength and adhesion strength. Also, by incorporating plastic balloons in the PVC formulation, a dried film specific gravity of less than 1.0 is achieved, and consequently a 2 kg weight reduction becomes possible when compared to conventional materials used for underbody coating.