A completely reworked, performance-enhanced 3.6l boxer engine with 300 hp (F300) provides the appropriate degree of propulsion. Beside a general overhaul at the very highest professional level, numerous modifications have been made to ensure maximum driving pleasure: e.g. a single throttle valve system developed by the DTW team with freely-programmable fuel injection and ignition system has been fitted as has a completely new type of manifold exhaust system – ensuring top performance – likewise developed by the DTW team, but in cooperation with Meisterwerke Autosport.
Air-cooled 3,6L boxer engine / compression ratio 11,3:1 / camshaft series / piston and cylinder grinding / DTW intake manifolds / DTW single throttle valves / DTW intake system / DTW exhaust system / EMU control unit / distributorless dual ignition
We developed this backdated manifold exhaust system together with our partner Falco Hollmann from Meisterwerke Autosport. We do not only have an expert opinion enabling the system to be registered as approved, we also have references – depending on the engine setup – underlining maximum performance attainment. We have managed to combine performance, perfect optics and quality in a single product.
Porsche’s most noteworthy advanced development in the gearbox sector was the G50 transmission with a new type of synchronisation. Whether meant as a sporty innovation or for a relaxing Sunday-afternoon drive, shifting gears had now become a real pleasure. A further advantage of the 5-speed gearbox was that it was designed for considerably higher engine power and no modifications were necessary for use in the F300. Of course, we completely disassembled the unit and overhauled it in line with the highest DTW standards.
We have exchanged the rear brake callipers for the stronger C4 4-piston versions. All parts have of course been overhauled according to DTW standards. The brake booster does not get its negative pressure from the intake manifold as in the series cars. When the flaps are open on the single throttle valve system, there is low intake manifold pressure and thereby brake power loss. Therefore, an electric vacuum pump with control unit is fitted which ensures constant negative pressure. Even if, like Walter Röhrl, you ever press the accelerator and brake pedal with one foot simultaneously, this car does not only accelerate excellently, but also decelerates with ease.
One of the catalytic converters is equipped with a heating jacket, which makes the installation of an additional heater for the interior and TÜV approval superfluous. The installation space of the 964 was scanned and the exhaust perfectly designed to fit into the existing installation space. There are not even any space problems with the F model’s converted rear carrier rack.
BRAKE & CHASSIS
The F300 leaves nothing to be desired in terms of chassis. A more-than-reliable BILSTEIN PSS10 chassis with adjustable compression and rebound damping, which was developed for the 964 in cooperation with Walter Röhrl, is fitted to the Bright Fuchs rim imitations in 9×17 with 225/45 tyres at the front and 11×17 with 275/40 tyres at the rear. By the way, Walter Röhrl test-drove and hand-signed the F300 himself.