Special molds, casting and cooling techniques are required to obtain finely and uniformly dispersed silicon particles throughout the material. Our hyper-eutectic material is also being used in light and medium diesel engines to replace some of the eutectic pistons with iron groove inserts used for additional heat and wear resistance of the ring groove. Heat and wear in the ring groove contribute to groove pound-out. The increased strength, heat and wear resistance provided by the high-silicon content hypereutectic piston material allows for elimination of the groove inserts in several piston applications. This patented technological advance can extend the life of an engine and essentially eliminate piston scuffing problems.
Coated pistons are ideal for severe duty performance engines and everyday applications.
The coating is precisely applied to pistons with a computer-controlled application and unique curing process. There is no overspray with our process and no coating ends up in the ring grooves. The forging process begins when we extrude our exclusive VMS-75 aluminum alloy into bar stock. The structure and grain flow in the aluminum from this process results in a piston that is extremely strong and durable. They are reliable enough for daily street use, yet strong enough to take the extreme punishment of racing.