GM 54 ° V6 engine

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The 54 ° V6 engine was developed by GM in the early 1990s. The specifications included a light gasoline engine that was supposed to replace the six-cylinder in-line engine that had been used until then . In addition, it had to be so compact that it could be used in front - wheel drive vehicles as well as in the familiar rear-wheel drive vehicles .

The result of the development was a V6 with the unusually small bank angle of only 54 ° instead of the usual 60 °. This makes it a very compact engine.

Basic technical data

The engine was manufactured in Ellesmere Port until 2005 .

Expansion stages

L81

The L81 was first introduced as a 2.5 V6 in 1993 in Opel Vectra A and Calibra . A revised version with secondary air injection and Multiram soon followed , supplemented by a further expansion stage with 3.0 liter displacement in the Opel Omega B 1. It was available in an equipment variant called " MV6 " based on the Multiram V6 used .
The L81 was continuously improved over its long construction period. For the 1998 model year, the oil pump was revised, the oil channels in the cylinder head were enlarged and the valve train was modified. A year later, the oil filter was finally changed and got a paper element.

LA3

The LA3 was the fundamentally revised version of the L81. Its production started in July 2001. The following innovations were introduced:

operation area

The first 54 ° V6 were installed in Europe in 1993 in the Opel Vectra and Calibra . Opel Omega B and Opel Signum followed later . The engine was also used by other corporate brands, such as Cadillac , Chevrolet , Holden , Alfa Romeo , Saab and Saturn .

brand model Engine identification Opel engine code Displacement
in [cm³] 		Power [PS]
at 1 / min 		Torque [Nm]
at 1 / min 		Construction period Emission standard particularities
Opel Omega B1 L81 X25XE 2,498 170 @ 6,000 227 @ 3,200 1994-1998 D3
Opel Omega B1 / B2 L81 X25XE 2,498 170 @ 6,000 227 @ 3,200 1998-2001 D3 Revision for
model year 1998
Opel Vectra B1 / B2 L81 X25XE 2,498 170 @ 5,800 230 @ 3,200 1998-2000 D4 Revision for
model year 1998
Opel Vectra B1 / B2 L81 X25XEI 2,498 195 @ 6,500 240 @ 3,500 1998-2000 D3
Improved performance by Irmscher sales designation i500
Opel Vectra B1 L81 X30XEI 2,962 220 @ 6,200 300 @ 3,600 1998-1998 D3 Increased performance from Irmscher
sales designation i30
Opel Omega B1 L81 X30XE 2,962 211 @ 6,000 270 @ 3,600 1994-1998 D3
Opel Omega B1 / B2 L81 X30XE 2,962 211 @ 6,000 270 @ 3,400 1998-2001 D3 Revision for
model year 1998
Cadillac Catera L81 - 2,962 204 @ 6,000 260 @ 3,600 1996-2001 - Compared to the X30XE
, compression is reduced to 10: 1
Opel Omega B2 LA3 Y26SE 2,597 180 @ 6,000 240 @ 3,400 2001-2003 Euro 3
Opel Omega B2 LA3 Y32SE 3,175 218 @ 6,000 290 @ 3,400 2001-2003 Euro 3
Cadillac CTS 1 LA3 - 3,175 220 @ 6,000 296 @ 3,400 2002-2004 Euro 3
Opel Vectra C1 LA3 Z32SE 3,175 211 @ 6,200 300 @ 4,000 2002-2005 Euro 4
Opel Signum 1 LA3 Z32SE 3,175 211 @ 6,200 300 @ 4,000 2003-2005 Euro 4
Opel Vectra C1 LA3 - 3,175 302 @ 5,800 370 @ 4,800 2004-2005 Euro 3
Increased performance from Irmscher sales designation i35
Opel Signum 1 LA3 - 3,175 302 @ 5,800 370 @ 4,800 2004-2005 Euro 3
Increased performance from Irmscher sales designation i35

performance increase

Ex works

The Irmscher company offered numerous performance enhancements for the 54 ° V6, most of which were also available ex works. In addition, there were also vehicles directly converted by Opel (Opel Special Vehicles), primarily for the police.

equipment

There were many options here too. Be it through classic engine tuning such as manifolds, camshafts and much more, or through charging.