GM 54-Degree V6 engine

GM 54-Degree V6 engine

Infobox Automobile engine
name=54° V6
aka=Ellesmere V6
manufacturer=General Motors
production=1994–2004
predecessor=Opel Straight-6
successor=High Feature V6
class=DOHC 54° 24-valve V6
similar=Chrysler LH V6
Mazda K engine
Nissan VQ engine
Nissan VE engine
Suzuki H engine
Toyota VZ engine
General Motors' Opel division in Europe designed a compact V6 engine with an odd 54° vee angle. It was an iron block/aluminum head DOHC design with 4 valves per cylinder. All 54° engines are assembled at Ellesmere Port in England.

This engine was used in the American versions of these models as well. The engine was reworked substantially between the 3.0 L L81 and 3.2 L LA3, but the bore centers and deck height were retained. In its 3.0 L form, this engine has a notable history for recalls of all units installed in U.S. Cadillac Cateras due to problems with timing belt tensioner bearing failures, which could cause catatrophic damage to the engine with its interference design.

L81 3.0

The L81 was used longitudinally in the Opel Omega, Cadillac Catera and transversely in the Saturn L-Series, Saturn Vue and Saab 9000. Bore and stroke were 86 mm (3.38 in) × 85 mm (3.35 in), for 2962 cc (180.75 in³) displacement. with 10,8:1 compression, the engine produced between Convert|182|hp|kW|0|abbr=on and Convert|208|hp|kW|0|abbr=on with auto ftlbf|190 to auto ftlbf|199.

Saab's turbocharged version for Saab 9-5 (the X30) produced Convert|200|hp|kW|0|abbr=on at 5000 rpm and auto ftlbf|229 at 2500-4000 rpm. Saab equipped the engine with special version of Saab Direct Ignition.

This engine was used in:
* 1994 Opel Omega
* 1996-1999 Opel Sintra
* 1997-2001 Cadillac Catera
* 2000-05 Saturn L-Series
* 2002-03 Saturn Vue
* Saab 9-5
* Saab 9000

2.5

Saab used a 2.5 L version of this engine in the Saab 900 (NG) from 1994 and Opel used it in many different models. It produced Convert|170|hp|kW|0|abbr=on and auto ftlbf|167.

This engine was used in:
* Opel Vectra A
* Opel Vectra B
* Opel Calibra
* Opel Omega B
* Saab 900 NG

2.6

This engine was used in:

* Opel Omega B
* Opel Vectra B

LA3 3.2

The 3.2 L LA3 is a complete redesign of the L81 for the Cadillac CTS and Opel Omega B. It had an iron block and used aluminum DOHC heads with fixed (non-variable) valve timing, and a variable intake. The bore was 87.5 mm and it had an Auto mm|88|1 stroke. This was a 3175cc (194 in³) engine and produced Convert|220|hp|kW|0|abbr=on and auto ftlbf|218. Production started in July 2001, but the engine was replaced by the new GM High Feature engine starting in 2004.

This engine was used in:
* 2003-2004 Cadillac CTS
* Opel Omega B
* Opel Vectra C
* Opel Signum

See also

X25XE/X30XE - detailed information about 2.5 and 3.0 motors

References


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