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AJ-V8 Engine

 
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Old 02-01-2010, 02:53 PM
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Default AJ-V8 Engine

I have attached an article talking about AJ-V8 engine weaknesses and strengths. I will add more informationas the days go on. First I will gather what I have learned so far for this type of engine.

The Jaguar AJ-V8 is a compact DOHC V8 piston engine used in many Jaguar vehicles. It was the fourth new engine type in the history of the company. In 1997 it replaced both designs previously available on Jaguar cars: the straight-6 Jaguar AJ6 engine (or rather its AJ16 variant), and the Jaguar V12 engine. It remained the only engine type available on Jaguar until 1999 with the launch of the S-Type, when the Jaguar AJ-V6 engine was added to the list. The AJ-V8 is available in displacements ranging from 3.2 L to 5.0 L, and a supercharged version is also produced. Ford Motor Company used this small V8 in other products as well, including the Lincoln LS the 2002-2005 Ford Thunderbird as well as in several Land Rovers.

AJ-V8
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 was made in the United States.

Other engine features include fracture-split forged powder metal connecting rods, a special one-piece cast camshaft, and reinforced plastic intake manifold.
 
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  #2  
Old 02-01-2010, 02:56 PM
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[edit] Manufactory
Ford Motor Company (Bridgend plant) build a families 3.5-5.0 of eight-cylinder engines for Jaguar and Land Rover, these engines include the 5.0-litre V8 Gen III for the all-new Jaguar XJ.[1][2]

[edit] AJ26
The 4.0 L (3996 cc) AJ26 engine was introduced in 1996 It has a square 86 mm (3.4 in) 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) (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
[edit] 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 387 lb·ft (525 N·m) with the help of an Eaton supercharger (modified roots-blower). The supercharged engine did not use variable cam timing as the normal benefits of improved volumetric efficiency are not noticeable on a boosted engine

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 V8
[edit] 3.2
The 3.2 litre variant was the second to be introduced. It reduces the stroke to 70 mm (2.8 in) and power falls to 240 hp (179 kW) and 233 lb·ft (316 N·m).

Vehicles using this engine:

Jaguar XJ (non-US)
[edit] 3.5
The 3.6 L (3555 cc/216 inł) "3.5" was used in the XJ series as well. The stroke was 76.5 mm (3.0 in). Output was 262 bhp (195 kW; 266 PS) at 6250 rpm and 345.0 N·m (254.5 lb·ft) at 4200 rpm.

Vehicles using this engine:

2002–present Jaguar XJ8 3.5, 262 hp (195 kW) and 254 lb·ft (344 N·m)
[edit] AJ30/AJ35
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 (3.4 in) and stroke is 85 mm (3.3 in). 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 displacement, 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 (188 kW) 267 lb·ft (362 N·m)
2002 Ford Thunderbird, 252 hp (188 kW) 267 lb·ft (362 N·m)
2003-2006 Lincoln LS, 280 hp (209 kW) 286 lb·ft (388 N·m)
2003-2005 Ford Thunderbird, 280 hp (209 kW) 286 lb·ft (388 N·m)
Ford Forty-Nine concept
The last AJ35 was produced in March 2006 after only 3 years. Total run of AJ30/35 was nearly 250,000 units

[edit] AJ34
The 4.2 L (4196 cc) AJ34 version features a longer 90.3 mm (3.6 in) stroke with the same 86 mm (3.4 in) bore. It was introduced in 2003 as the AJ33 and produces 294 hp (219 kW) at 6000 rpm with 303 lb·ft (411 N·m) of torque at 4100 rpm, later increased to 300 hp and 310 lb.ft.

Vehicles using this engine:

2003–present Jaguar XK-series 294 hp (219 kW), 303 lb·ft (411 N·m)
2003–present Jaguar S-Type 4.2, 300 hp (224 kW) and 310 lb·ft (420 N·m)
2004–present Jaguar XJ8, 300 hp (224 kW) and 310 lb·ft (420 N·m)
2009–present Jaguar XF, 300 hp (224 kW) and 310 lb·ft (420 N·m)
[edit] AJ34S
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 lb·ft (541 N·m) of torque at 3500 rpm.

Vehicles using this engine:

2004–present Jaguar XJR/Super V8, 400 hp (298 kW) and 408 lb·ft (553 N·m)
2003–present Jaguar XKR, 400 hp (298 kW) and 408 lb·ft (553 N·m)
2003–present Jaguar S-Type R, 400 hp (298 kW) and 408 lb·ft (553 N·m)
2005–present Daimler Super Eight
2009–present Jaguar XF, 420 hp (313 kW) and 408 lb·ft (553 N·m)
[edit] AJ-V8 Gen III
This all new direct injection engines family is introduced in 2009 (all new engine block).[3] New features include spray-guided direct-injection, torque-actuated variable camshaft timing, cam profile switching in naturally aspirated engine, sixth-generation twin vortex supercharger on Gen III R engine. Conform to EU5 and US ULEV2 emissions regulations.[3]

It includes the Denso Generation 1.5 ignition system.

[edit] AJ133
Bore and stroke is 92.5 mm (3.6 in) x 93.00 mm (3.7 in).

Land Rover version is called 'LR-V8 Petrol engine'. LR4 engines include only 16 valves.

Vehicles using this engine:

2009–present Jaguar XFR, 510 PS (380 kW; 500 hp) and 625 N·m (461 ft·lbf)
2009–present Jaguar XKR, 510 PS (380 kW; 500 hp) and 625 N·m (461 ft·lbf)
2009–present Jaguar XF, 385 PS (283 kW; 380 hp) and 515 N·m (380 ft·lbf)
2009–present Jaguar XK, 385 PS (283 kW; 380 hp) and 515 N·m (380 ft·lbf)
2009–present Land Rover Range Rover, 510 hp (380 kW) and 461 lb·ft (625 N·m)
2009–present Land Rover Discovery, 385 hp (287 kW) and 380 lb·ft (520 N·m)
2009–present Land Rover Range Rover Sport, 510 hp (380 kW) and 461 lb·ft (625 N·m)
2009–present Land Rover Range Rover Sport, 385 hp (287 kW) and 380 lb·ft (520 N·m)
[edit] 5.0
It is a race version of AJ133, rated 550 hp (410 kW).
 
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Old 02-01-2010, 03:08 PM
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Old 02-01-2010, 05:54 PM
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Nice piece of compilation there super_Jag.
 
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Old 02-01-2010, 07:03 PM
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Pre-2000 engines suffered from the Nikasil coating. Not all engines where replaced under the recall. If you are looking to buy a pre-2000 AJ8 car look for a placard at the back of the engine.

More information on this is available here:
http://www.go-lpg.co.uk/More_X308.html
 
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Old 02-02-2010, 03:41 AM
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Thank you for those huge info
 
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Old 02-02-2010, 03:11 PM
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Feel free to add info as this is why we have this new subforum.
 
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Old 02-02-2010, 03:16 PM
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I have been reading up on the new AJ133 and it seems that even though the displacement is .8 more than the AJ34S it smaller. I would love to see an engine swap the only thing that would complicate things is they come with a new type of variable cam system, four VCT (variable cam timing – intake and exhaust, 2 V banks). any techs willing to shime in
 
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Old 02-02-2010, 06:22 PM
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Hey super....dunno if the techs have really checked this section out yet. I know they are busy with stuff in the general tech help and other model specific areas too.

Might be an idea to drop a pm to one or two of them and direct them here to see what input / if any they have
 
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Old 02-03-2010, 02:00 AM
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Nice post. Thanks for the info.
 
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Old 06-22-2010, 09:38 AM
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I tried opening the attachment but it says I don't have access even though I'm logged in. Any idea what's wrong?

Thanks.
 
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Old 06-22-2010, 10:10 PM
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Go read the readme in the new members forum. There are anti spam measures that require new members to have several posts and several days prior to full privileges being granted. Introduce youself over there and say hi to several new members as well and the next thing you know, you will have fulfilled your quota.
 
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Old 06-28-2010, 12:29 PM
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@Super_jag
It will not be a cheap swap, I’ll guess that these engines will have a premium price for some time to come, and next to that you need lots of customizations as everything is different including the bell house for the gearbox. You could get away with fixing the exhaust camshaft (which has VVT), and if your car doesn’t have VVT on the intake, you could also fix that one. So that is no problem at all. Most other items are on the border, i.e. possible custom tuning might be needed for the injectors/ignition etc etc.
 
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Old 03-16-2011, 02:50 AM
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I was involved in the initial development of the AJ133 and the AJV8s that went before it. I know they are dubbed related but the AJ133 is almost a totally new engine. It no longer uses a bed plate design, it is direct injection with spray guided GDi and piezo injectors. It also uses the Borg and Warner VCT units that utilise cam flanks torque for a rapid response time and lower oil pressure requirement. The block is of an open deck design (unlike the Aj33 and Aj27 etc) and the bore centres are 100 mms compared to the earlier V8s 98mms. This means that the cylinder heads cant be interchanged, infact very little can.
I'm not going to say that the new engine can't be retro fitted- anything can be done- only that it would be a very involved task sorting out the wiring!

Good luck!
 
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Old 12-11-2012, 08:35 PM
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Default The AJ Engine Origin?

So the question I have is who do we blame for the AJ engine, Jaguar or Ford
 
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Old 01-27-2017, 08:48 AM
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Originally Posted by super_jag View Post
I have been reading up on the new AJ133 and it seems that even though the displacement is .8 more than the AJ34S it smaller. I would love to see an engine swap the only thing that would complicate things is they come with a new type of variable cam system, four VCT (variable cam timing – intake and exhaust, 2 V banks). any techs willing to shime in
I am new on here and not sure if I'm in the right section but I am curious to know as previously another number that the AJ 133 from a jaguar XF or many other models could simply be used and a Land Rover Range Rover model or into a Land Rover LR4 discovery? Can someone tell me if this is a direct fitment without modifications?
 
 
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