Plastic Molding
VF-Engineering designs and creates patterns for its supercharger ducts. The patterns are cast into female molds at a local foundry. The molds are framed and finished ready for rotational molding. At VF's plant the molds are mounted on large Roto-Molding machines and charged with plastic powder. Each arm of the machine runs through a heating and cooling chamber whilst being rotated on X,Y and Z axis on a computer programmed cycle. The molding process yields a cavity part with an ultra-smooth interior finish, ideal for airflow.

Plastic is selected for its heat and chemical resistance characteristics and typically most parts are produced from Polypropylene or Polyethylene.

Creating supercharger ducts from plastic gives VF the clear ability to design parts which fit the car and supercharger hardware without being limited in ways that mandrel bent steel is dictated. Supercharger intakes experience a variety of disruptive airflow patterns and require complex shaping to prevent off-throttle burble and backfiring. This is often caused by poor deceleration tuning which is usually overlooked by many. VF-tuned intakes are designed for optimal flow in both directions.

The plastic material external finish is governed by the tools created and VF prefers to apply an even texture to match the OEM plastics in the engine bay. The only way to satisfy the perfectionists market was to employ plastic molding for engineering and not-reverse engineering the ultimate aftermarket product.