Jaguar AJ-V8 engine
The
Jaguar AJ-V8 is a compact
V8 piston engine used in many Jaguar vehicles. It was the fourth new engine type in the history of the company. It is a
DOHC design and replaced the
Jaguar AJ6 engine in many cars. It is available in displacements ranging from 3.2 L to 5.0 L, and a
supercharged version is also produced.
Ford Motor Company uses this small V8 in other products as well, including the
Lincoln LS and
Land Rovers.
The AJ-V8 was designed to use
Nikasil-coated cylinders rather than the more-common iron cylinder liners. However, like the
BMW M60, high-sulphur fuel reacted with the Nikasil liners and caused engine failures. Jaguar replaced affected engines, and has used conventional cast-iron linings ever since.
The engine uses a two-state
Variable Valve Timing system to switch the intake cam timing by 30°. Newer engines use a more sophisticated system which can vary intake timing incrementally up to 48°. The
Lincoln version does not use this technology.
Other engine features include fracture-split forged powder metal connecting rods, a special one-piece cast camshaft, and reinforced plastic intake manifold.
The AJ-V8 was on the
Ward's 10 Best Engines list for
2000.
The 4.0 L (3996 cc)
AJ26 engine was introduced in
1996 It has a square 86 mm bore and stroke. It was updated in
1998 as the
AJ27 with continuously
variable valve timing. The AJ-V8 was updated again in
2000 as the
AJ28. The
naturally-aspirated version produces 290 hp (216 kW) in the 2004 XK8.
Vehicles using this engine:
*
Daimler V8* AJ26
** 1997-1998
Jaguar XJ8** 1997-1998
Jaguar XK8* AJ27
** 1999-2004
Jaguar XJ8** 1999-2004
Jaguar XK8* AJ28
** 2000-2002
Jaguar S-Type (281 hp, 287 ft·lbf)
AJ26S
The
supercharged version of the
AJ26 is used in the high-performance
R versions of Jaguar's cars. The engine was updated with
AJ27 specifications for
2000. It produces 370 hp (276 kW) and 525 N·m with the help of an Eaton supercharger (modified roots-blower).
Vehicles using the supercharged version include:
* AJ26S
** 1998-1999
Jaguar XJR** 1998-1999
Jaguar XKR* AJ27S
** 2000-2003
Jaguar XJR** 2000-2003
Jaguar XKR** 2000-2002
Vanden Plas** 2002
Daimler Super V8The 3.2 litre variant was the second to be introduced. It reduces the stroke to 70 mm and power falls to 179 kW and 316 N·m.
Vehicles using this engine:
*
Jaguar XJ (non-US)
The 3.6 L (3555 cc/216 in³) "3.5" was used in the XJ series as well. The stroke was 76.5 mm. Output was 262 bhp (195 kW) at 6250 rpm and 345.0 N·m (254 ft·lbf) at 4200 rpm.
Vehicles using this engine:
* 2002–present
Jaguar XJ8 3.5, 262 hp (195 kW) and 254 ft·lbf (344 N·m)
*
Land Rover Range Rover (260 hp)
The 3.9L (3934 cc)
AJ30/AJ35 variant is a unique displacement used only by
Ford and
Lincoln and is built in Ford's
Lima, OH engine plant. Bore is 86 mm and stroke is 85 mm. The AJ35 version introduced for the 2003 model year added variable valve timing of the intake camshafts and electronic throttle control. While the block, crankshaft, pistons, and connecting rods are all unique to this displacment, many other parts are shared with the AJ-V8 engines produced in the UK by Jaguar.
Vehicles using this engine:
* 2000-2002
Lincoln LS, 252 hp 267 ft·lbf
* 2002
Ford Thunderbird, 252 hp 267 ft·lbf
* 2003-2006
Lincoln LS, 280 hp 286 ft·lbf
* 2003-2005
Ford Thunderbird, 280 hp 286 ft·lbfThe last AJ35 was produced in march 2006 after only 3 years. Total run of AJ30/35 was nearly 250,000 units
The 4.2 L (4196 cc)
AJ34 version features a longer 90.3 mm stroke with the same 86 mm bore. It was introduced in 2003 as the
AJ33 and produces 294 hp (219 kW) at 6000 rpm with 303 ft·lbf (411 N·m) of torque at 4100 rpm.
Vehicles using this engine:
* 2003
Jaguar XK8 (294 hp, 303 ft·lbf)
* 2003–present
Jaguar S-Type 4.2, 300 hp (224 kW) and 310 ft·lbf (420 N·m)
* –present
Jaguar XJ8, 300 hp (224 kW) and 310 ft·lbf (420 N·m)
The
AJ34S is a
supercharged/
intercooled variant of the AJ34. It was introduced in 2003 to replace the 4.0 SC and produces 390 hp (291 kW) at 6100 RPM with 399 ft·lbf (541 N·m) of torque at 3500 rpm.
Vehicles using this engine:
* –present
Jaguar XJR/Super V8, 400 hp (298 kW) and 408 ft·lbf (553 N·m)
* 2003–present
Jaguar XKR, 400 hp (298 kW) and 408 ft·lbf (553 N·m)
* 2003–present
Jaguar S-Type R, 400 hp (298 kW) and 408 ft·lbf (553 N·m)
A de-bored
supercharged version of the Land Rover 4.4 is that company's high-performance engine. It displaces 4.2 L (4197 cc/256 in³).
Applications:
* 2006
Land Rover Range Rover Sport 385 hp (287 kW) and 406 ft·lbf (550 N·m)
* 2006
Land Rover Range Rover 400 hp (291 kW) and 413 ft·lbf (560 N·m)
Aston Martin hand-assembles a special version of the AJ-V8 for the
V8 Vantage. This unit displaces 4.3 L (4280 cc/261 in³) and produces 380 hp (283 kW) at 7000 rpm and 302 ft·lbf (409 N·m) at 5000 rpm. This engine is unique to Aston Martin and features race-style
dry-sump lubrication, which enables it to be mounted low to lower the centre of gravity. The
engine is assembled by hand at the AM facility in
Cologne,
Germany, which also builds the
V12 for the
DB9 and
Vanquish. The cylinder block, cylinder heads, crankshaft, connecting rods, pistons, camshafts, inlet and exhaust manifolds, lubrication system and engine management are all unique to the Aston Martin version.
Applications:
*
2005–present
Aston Martin V8 VantageThe 4.4 L (4394 cc/268 in³) version features a 2 mm wider bore over the 4.0 to increase torque.
Vehicles using a 4.0 L AJ-V8 include:
* 2005
Land Rover Discovery/LR3 - 300 hp (220 kW), 315 ft·lbf (425 N·m)
* 2006
Land Rover Range Rover Sport* 2005
Land Rover Range RoverA special 5.0 liter racing engine was produced with 550 hp (410 kW), though no road car uses this engine.
*
Jaguar AJ6 engine*
Jaguar AJ-V6 engine*
Jaguar V12 engine*
AJ-V8 PerformanceLandrover version of AJ (Aluminium Jaguar) SuperSport 5.0 litre high torque supercharged has been built by Overfinch of Great Britain
Max Power 500 bhp (370 kW) @ 6000 rpmMax Torque 550 ft·lbf (709 N·m) @ 3000 rpm
