Category: TwinSpark Porsche Parts

The Mechanical Fuel Injection set up on early Porsches was allegedly derived from the need to fly upside down. In the Second World War aerial combat developed into serious forms of aerobatics and there was an advantage to be had by those pilots who could manage their throttle and therefore acceleration, irrespective of the position of the plane. Traditional carburetion was inadequate as carburettors rely on gravity to keep the float chambers filled. Trust the German engineering cadre to come up with a solution. Their Messerschmidt aircraft could pull negative G’s thanks to this technology and the British Spitfires could not follow their trail without stalling their carburetted engines.

The constant fuel pressure combined with excellent fuel atomization, leading to a maximum fuel burn ratio in gasoline engines, had Mercedes, Porsche and later BMW, apply this expensive and complex technology on their race and production cars. MFI was overtaken by Electronic Fuel Injection only 20 [...]

“Woodstock” has been with us for 3 years now and has gone through a constant upgrade process. It is an original 1973 911S chassis which has been modified to RSR spec over the years.

The nickname “Woodstock” was given recently by TwinSpark’s business manager, Daan Stolk, and refers to the Charlie Brown character, particularly to his color…

We acquired the chassis in 2006 from a German car trader. It came with an ONS pass which showed it had competed actively in the German Youngtimer Trophy. Unfortunately its then owner abandoned the RSR at shop after he was faced with a repair bill which he couldn’t pay. Subsequently the engine, gearbox and all of the interior were sold off by the repair shop, to cover the bill. The suspension remained however and in that barren state the car was moved to the shop where we bought it. Step by step the chassis was completed with the [...]