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The six-cylinder boxer engine of the Porsche 993 - the last air-cooled

Name: Porsche 993 1998
Brand: Porsche

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Created on July 23, 2021

Text:

Andreas Gabriel

Photos:

Daniel Reinhard

Archiv Porsche AG

- Courtesy RM/Sotheby's

Porsche AG

Tom Wood - Courtesy RM/Sotheby's

Tom Gidden - Courtesy RM/Sotheby's

Porsche AG / Porsche Schweiz AG

Dirk de Jager - Courtesy RM/Sotheby's

Greg Keysar - Courtesy RM/Sotheby's

Stephan Bauer - Courtesy RM/Sotheby's

Porsche AG - Courtesy Berlin Motor Books

Bruno von Rotz

Berlin Motor Books

Daniel Reinhard

Archiv Porsche AG

- Courtesy RM/Sotheby's

Porsche AG

Tom Wood - Courtesy RM/Sotheby's

Tom Gidden - Courtesy RM/Sotheby's

Porsche AG / Porsche Schweiz AG

Dirk de Jager - Courtesy RM/Sotheby's

Greg Keysar - Courtesy RM/Sotheby's

Stephan Bauer - Courtesy RM/Sotheby's

Porsche AG - Courtesy Berlin Motor Books

Bruno von Rotz

Berlin Motor Books

Porsche 993 from 1994 - still without Varioram

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Porsche 911 Carrera (Type 993) (1993) - In addition to the newly constructed aluminum chassis, the new 911 is characterized by a harmonious design and a 3.6-liter boxer engine that has been revised in many details

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Porsche 993 (1994) - 3.6-liter version, see-through drawing

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Porsche 911 Carrera 3.6 (1994) - the 993 was often ordered in silver

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Porsche 911 Carrera 4 3.6 (1995) - the 993 in red

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The development team behind the Porsche 993

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Porsche 993 - the last air-cooled car among air-cooled cars - 4th Porsche Classic Day 2016

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Porsche 993 - the last air-cooled 911 - 50 years of the Porsche 911 in the Porsche Museum

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Porsche 993 from 1995 - still without Varioram

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Porsche 993 from 1996 - still without Varioram

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Porsche 993 (1994) - with air-cooled 3.6-liter engine

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Porsche 911 Carrera S 3.6 (1997) - the S version of the 993 series

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Porsche 911 Carrera 3.6 (1994) - Cabriolet of the 993 series

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Summary

With the Porsche 993, the Zuffenhausen-based company presented an air-cooled 911 for the last time. The last development stage of the six-cylinder boxer engine, which had been built and continuously improved for decades, was mounted in the rear. When the last engine was built in March 1998, Ferry Porsche died on the same day. This technical report looks at the special features of the air-cooled six-cylinder engine and shows it in a few pictures.

This article contains the following chapters

On a proven foundation
Initially 272 hp
Thanks to Varioram 285 hp
Technical data (Porsche 993 Carrera 2 Coupé 1994 and 1996)

Estimated reading time: 3min

Preview (beginning of the article)

To this day, the engine of the Porsche 993 is something very special. As the last air-cooled engine in the legendary nine-eleven, this unit is also the most sophisticated of the entire model series. There is another special feature, because Ferry Porsche died on the very day on which the last engine for the 993 was built in Stuttgart Zuffenhausen. This made March 27, 1998 a day that went down in the history of Porsche in more ways than one. The engine basis of the 993 is that of its predecessor, the 964. The displacement (3600 cm3) was not changed, but the 3.6-litre engine was thoroughly reworked and given the designation M64/05. The mechanical changes included a more torsionally rigid crankshaft with eight bearings, lighter connecting rods, lighter and further optimized pistons, enlarged intake ports, lighter and larger valves and rocker arms with hydraulic valve lash adjustment.

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