When the life rhythm of a long-serving engine is interrupted by a long period of inactivity, this may not have a beneficial effect when it comes to engine performance. Rather, there is a risk that the engine may become the temporary home for undesirable guests. The remains of insect nests still sticking to the engine housing are clear evidence of this. In addition, wind and weather have achieved numerous victories over the metal due to sustained attacks. Nevertheless, the past 38 years have not resulted in any irreparable damage to the engine.
The 911 T undergoes “open-heart surgery”: following the completion of bodywork repairs on the 1973 US
In the Classic workshop, the
At the end of this evaluation process, the experts estimated that the engine mileage was approximately 100,000 miles, not excessive for a 38-year-old engine. The previous owners had also not pushed the engine to its limits. In fact, it was the long standing time that had made it suffer most. On the basis of their experience and the measurement results, the experts then decided on how to proceed with the restoration process.
As part of the complete restoration of an engine at
All of this preparatory work for the successful restoration of the engine is a job for experts with plenty of experience and is also a very time-consuming and complex process. However, this amount of effort is essential for a complete restoration. A complete, new engine from 1973 simply no longer exists. In contrast, a large number of the individual genuine parts are still available. During subsequent assembly and installation, the specialists also made use of old original tools and fixtures.
However, the moment of truth occurs only after assembly. As is usual with a completely new engine, the restored 911 T engine must undergo test operation with a dyno test. The engine cannot expect any special favours due to its age. It has to run like new. For this reason, values such as hp and torque have to be exactly correct. Checks are also made for leaks and general functional capability and various adjustments are performed. The engine then runs at maximum revs – and shines in its old glory.
* Data determined in accordance with the measurement method required by law. Since 1 September 2017 certain new cars have been type approved in accordance with the Worldwide Harmonised Light Vehicles Test Procedure (WLTP), a more realistic test procedure to measure fuel/electricity consumption and CO₂ emissions. As of 1 September 2018 the WLTP replaced the New European Driving Cycle (NEDC). Due to the more realistic test conditions, the fuel/electricity consumption and CO₂ emission values determined in accordance with the WLTP will, in many cases, be higher than those determined in accordance with the NEDC. This may lead to corresponding changes in vehicle taxation from 1 September 2018. You can find more information on the difference between WLTP and NEDC at www.porsche.com/wltp.
Currently, we are still obliged to provide the NEDC values, regardless of the type approval process used. The additional reporting of the WLTP values is voluntary until their obligatory use. As far as new cars (which are type approved in accordance with the WLTP) are concerned, the NEDC values will, therefore, be derived from the WLTP values during the transition period. To the extent that NEDC values are given as ranges, these do not relate to a single, individual car and do not constitute part of the offer. They are intended solely as a means of comparing different types of vehicle. Extra features and accessories (attachments, tyre formats, etc.) can change relevant vehicle parameters such as weight, rolling resistance and aerodynamics and, in addition to weather and traffic conditions, as well as individual handling, can affect the fuel/electricity consumption, CO₂ emissions and performance values of a car.
** Important information about the all-electric