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  Article Image gallery (33) Chassis (3) Specifications  
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Country of origin:Germany
Produced in:1968
Numbers built:35
Internal name:911
Author:Wouter Melissen
Last updated:November 27, 2014
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Click here to download printer friendly versionEven though the Porsche 911 had been strictly developed as a production road car, the German manufacturer's customers quickly recognised the potential and started racing the six-cylinder engined machine. Ahead of the 1967 season, the Porsche's competition department had a go at making a 911-based racer. Known as the 911 R, it was blisteringly quick but it was not built in sufficient numbers to be homologated as a GT car.

Using the lessons learned with the R, Porsche created an upgrade package for the based 911 T. This was picked over the higher performance 911 S model as the T was homologated with a lower minimum weight. Further weight was stripped from the car by removing the sound-deadening material and the use of lightweight competition seats. Where possible lighter body panels were also fitted. Rally equipment like additional lights were also available depending on the clients' needs.

Customers had a choice of two engine specifications. The first was the 160 bhp flat six as fitted in the 911 S road car. Altogether more potent was the Type 901/22 as originally fitted in the 906 sports racer. Among the differences compared to the production engine was the use of twin-spark ignition. To provide additional engine cooling, a separate oil-cooler was mounted in the front right wheel well. A lighter flywheel, a stronger clutch and a limited slip differential was also part of the package, while different gear ratios were also available.

Although officially referred to as a 911 T for homologation purposes, the upgraded racer was commonly known as the 911 T/R. The competition package was available for DM 5,150 and it is believed that around 35 cars were upgraded to T/R specification. Campaigned exclusively by privateers, the cars were remarkably successful, scoring many Group 3 class wins in World Championship rounds. Erwin Kremer, Rolf Kelleners and Willy Kauhsen also piloted a 911 T/R to an outright win in the Spa 24 Hours.

Development of the 911 continued and for the 1969 season, Porsche introduced the S/T model powered by a larger, 2.3-litre version of the flat six engine. Only very rarely seen today, the little known 911 T/R is rapidly increasing in value.

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  Article Image gallery (33) Chassis (3) Specifications