Whether it be for daily use or for towing those Jet Skis to the Vaal, the RGM supercharged Ranger 4.0 is a must have. The figures speak for themselves. Our in-house design division utilizing sophisticated CAD design programs, came up with a design that emphasizes on durability, reliability and presentation. The net result is a conversion that is not only exceptionally pleasing to the eye but also delivers in its expectations of increasing horsepower substantially. The Vortech centrifugal supercharger unit we use is a V2 SC-Trim. This unit is renowned for it’s quiet working operation as well as its reliability. It is high pressure oil fed and runs a gravitational oil return to the sump. The charge cooler as well as all other aluminium components have been highly polished. High pressure blue silicon has been employed for boost couplers and other bends. These are secured with Stainless Steel clamps. As the supercharged unit is permanently engaged, the use of the RGM high flow Dump Valve (Recirculation Valve) has been employed to eliminate any surging under light throttle and coasting condition. We have, in this state of the art design used a Liquid charge cooler as opposed to an Air-to-Air intercooler. In extensive testing we have reduced boost air temperature by up to 60 degrees Celsius. An advantage in our installation design utilizing a high quality Setrab cooler, that mounts on the front of the car was that we did not impede on the normal air flow to the radiator. This cooler is also fitted with it’s own 8 inch electrical fan, adding unrestricted airflow to the radiator. This also assist in more effective charge cooling in low speed conditions. The total of the 5.5 litres liquid cooled system is made up of 50% water and 50% Glycol (Anti-freeze).
We have utilized carbon fibre in areas where temperature reduces horsepower. The air filter used is a Conical high flow serviceable air filter, that is positioned in a splash free area. This installation is totally bolt-on. The engine is not opened or tampered with in any way. No body panels are modified to suit the installation, making this conversion totally reversible. Engine electronics (Ignition Timing and Fuel) is remapped to suit the additional air supply by means of a Unichip. The same unichip is used to remove the road speed governor. In addition to the electronic changes, an RGM rising rate fuel pressure regulator is fitted to increase fuel line pressure as boost pressure increases. This supercharger unit develops a maximum of 0.5 bar boost (7 pounds). Outstanding results are achieved with output topping 165 Kw on the wheels, and just over 254Kw on the engine, as opposed to the standard 154Kw on the engine. This is a 65% increase in output! Engine torque has reached an amazing figure. It has gone up from the standard 323Nm to 565Nm which equates to a 75% gain!
Other performance options available for this vehicle:
