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911 Quick Reference Guide

911 Street Model Variants

The wide world of 911 models can get confusing. Tony Callas as put together a quick-reference guide of 911 Models for easy reference of street 911 models.

1964-1968 Short wheel base (Long Hood)

-Oil and filter change – FILL QUANTITY 8.50 - 9.00 Quarts

-All engines 2.0 Liter

-All engine cases aluminum

-1967 first year of the 911S

-1967 911S introduction of Fuchs wheels – 2 versions – 4.5 in for the 911S – 7.0 in for the 911R

-1967 was the first year for factory-supplied Weber carburetors with the 911S getting 40IDS carbs – 1st 20 cars got 40 IDA special w/ no high speed circuit - but stamped S on the end.

-1968 first and only year of 911L

-1968 911 engine case now magnesium (mid-year changeover)

-1968 911S only in Europe (Heavy emissions year)

-1968 US cars had smog pumps and emissions equipment

-Bendix style fuel pumps located in engine compartment

 

1969 First year of Long wheel base (Long Hood)

-Oil and filter change – FILL QUANTITY 8.50 - 9.00 Quarts

-1969 first year of front and rear fender flares

-1969 911E & 911S returns to US with first year of mechanical fuel injection

-911T equipped with Zenith carburetors – no, Weber 40 IDT carbs through 1969, and 914-6.

-1969 first year of all three 911T, E and S models

-911E had hydro-pneumatic front suspension – Optional Comfort Group – included 14 x 5.5” Fuchs

-Fuel pump for MFI cars mounted to front suspension cross member with special bracket – until late ’71 when the pump moved back near the left rear sway bar bracket.  It stayed there through 1976.

1969 First year of Long wheel base continued

-Fuel pump for carburetor cars was a Hardy and mounted in engine compartment

-CDI ignition was introduced … Standard - Option? – Standard for 911E and 911S – often added to the 911T as the CDI harness was available separately and the mounting bracket was present in the eng compartment left forward corner.

 

1970-1971 Engines upgraded to 2.2 Liter

-Oil and filter change – FILL QUANTITY 8.50 - 9.00 Quarts

-911S and 911E were fuel injected

-Fuel injection pump on MFI cars mounted on cross member

-Carburetor pump changed to roller-type and moved to front cross member – and included a return line to the tank for both MFI and Carb punps.

-911T equipped with Zenith carburetors … European cars delivered with Webers? – My guess, is Zenith for everywhere.  US Zeniths had the smog valve on the side.

 

1972-1973 Engines upgraded to 2.4 Liter

-Oil and filter change – FILL QUANTITY 8.50 - 9.00 Quarts

-1972 Oil filler cap lid on right rear exterior fender and both year models had year specific oil tanks.  By 1974, the oil tanks became more standardized – and held almost a quart more.

-915 gearbox introduced in 1972 – with the troublesome early internal main shaft seal.

-1972-1973 had Mechanical FI for all models T, E, and S

-Fuel pumps moved to back of car on driver’s side at torsion tube – (opps – yes!)  actually a few 1971s got this, too.

-1973.5 introduction of CIS FI

 

1974-1977 Engines upgraded to 2.7 Liter

-Oil and filter change – FILL QUANTITY 10.50 - 11.00 Quarts – the oil tank changes stopped!

-Larger oil tank & filter orifice

-1974-1977 special model named Carrera (Had SC rear flares) but the std 911S engine.

1974 only - had two engine options for the US – std 911 w/ smaller intake runners,  8.0:1 compression, and a slightly milder cam timing.  911S had 8.5:1 comp, larger intake ports and runners and the camshaft that would continue through 1977S.

-1975-1979 had Smog Pump – EGR, and Thermo Reactors  through 1977 – then the first cat in 1978 and 1979 with air pumps, diverter valves and EGR.

-1974 introduction of short front hood and accordion bumpers

-1976-1977 US 930 (911 Turbo) introduced with 3.0 Liter engine with aluminum case – still with the six bolt 2.4 L crankshaft.

-Fuel pump moved back to the front in 1976

1978-1983 Name changed to 911SC and upgraded to 3.0 Liter

-1978-1979 Oil and filter change – FILL QUANTITY 10.50 - 11.0 Quarts

-1980-1989 Oil and filter change – FILL QUANTITY 10.50 Quarts

-1978 all engines have aluminum case

-1980-1983 O2 sensor introduced

-1978-1989 930 engine upgraded to 3.3 Liter engine (No turbo in US from 1980-1985)

 

1984-1989 Name changed to Carrera

-Oil and filter change – FILL QUANTITY 10.5 - 11.0 Quarts

-1984-1989 engines upgraded to 3.2 Liter

-1984 introduction of oil fed Carrera chain tensioners

 

1984-1989 Name changed to Carrera continued

-1984 introduction of DME Motronic FI

-1984 introduction of integrated fog lights

-1987 introduction of G50 gearbox with hydraulic clutch

 

1989 964 C4 Introduced / 1990-1994 964 C2 and C4 (2DW & 4WD)

-Oil and filter change – FILL QUANTITY 9.50 - 10.50 Quarts

-1994 930 engine upgraded to 3.6 Liter

-964 engines upgraded to 3.6 Liter with Bosch ME 2.1 FI

-Sequential fuel injection introduced

-Plunge-proof and Potential free O2 sensor introduced

-1989 964 C4 has light-weight flywheel

-1990 964 C2-C4 has Dual-Mass Flywheel

 

1995-1998 993 C2-C4 Introduced

-Oil and filter change – FILL QUANTITY 9.50 - 10.50 Quarts (2 Oil Filters)

- Change to hydraulic lifters

-1995 with Bosch ME 2.10.1 FI

-1996 C2S - C4S introduced with Bosch ME 5.2 FI

-1996 993 OBD-2 system with quad O2 sensor system introduced

-1996 993 Vario-Ram intake system introduced

 

 

1999-2004 996 C2-C4 Introduced

-Oil and filter change – FILL QUANTITY 8.50 - 9.00 Quarts

 

1999-2004 996 C2-C4 Introduced continued

-3.4 Liter water-cooled M96 engine introduced

-1999 Vario-Cam Vane Adjustment systems introduced

-1999 996 BOSCH ME 5.2.2 with throttle cable introduced

-2000 996 BOSCH ME 7.2 with E-Gas introduced for 2000-2001

-2002 996 BOSCH ME7.8 introduced for 2002-2005

-2002 “Plus” type lifter adjustment system introduced

-2001-2005 996tt (Turbo) with Bosch ME 7.8

 

2005-2008 997 C2-C4 Introduced

-Oil and filter change – FILL QUANTITY 8.50 - 9.00 Quarts

-997 S models have 3.8 Liter engine

-2006-2008 introduction of Bosch ME 7.8_40

 

2009-2011 997-2 C2-C4 Introduced

-Oil and filter change – FILL QUANTITY UTILIZE Instrument Cluster

-All new MA1 DFI engine

-EMS SDI 3.1 (Siemens)

 

2012-2016 991 C2-C4 Introduced

-Oil and filter change – FILL QUANTITY UTILIZE PIWIS-2 TESTER (To 175%)

-EMS SDI 9 (Continental)

-First year of 991 chassis

-No MAF sensor

 

2017-2020 991-2 C2-C4 Introduced

-Oil and filter change – FILL QUANTITY UTILIZE PIWIS-3 TESTER (To 175%)

-All chassis are forced induction

-S 3.0 liter all new engine

-One piece cylinder heads

-New cylinder heads-fuel injector protrudes side of cylinder heads

-Plastic engine sump plate with quarter turn plastic drain plug

-EMS SDI 9 (Continental)

 

2020 992 S & 4S Introduced (8th Generation 911 – all redesigned)

-Oil and filter change – FILL QUANTITY UTILIZE PIWIS-3 TESTER (To 175%)

-All chassis are forced induction.

-3.0 Liter engine

-Retro square front hood (to copy 1974 G body intro -1989 911 front hood)

-Recessed exterior door handles

-DME (Bosch)

-Fuel injectors coded

-New chassis

-5X piezo electric (crystal) fuel injectors

-Dynamic engine mounts PADM (Porsche Active Drivetrain Mount system)

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