1999 JAGUAR S TYPE Powertrain Manual

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JAGUAR S TYPE 1999 1.G Powertrain Manual Notes AJ-V6/AJ28
44

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JAGUAR S TYPE 1999 1.G Powertrain Manual V8 EngineAJ-V6/AJ28
45
Introduction
The AJ28 engine is a variant of the 4.0L 90û V8 units fitted to the XJ and XK range of vehicles. The AJ28
shares some of the changes incorporated in the current AJ

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JAGUAR S TYPE 1999 1.G Powertrain Manual V8 Engine AJ-V6/AJ28
46
Basic Engine
Bottom End
Changes to the cylinder block, connecting rods
and pistons which were introduced for the AJ27
N/A engine are also applicable to the AJ28 unit
and are de

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JAGUAR S TYPE 1999 1.G Powertrain Manual V8 EngineAJ-V6/AJ28
47
Cylinder Head
The cylinder head incorporates the modifications
first introduced for the AJ27 engine except for the
camshaft sensor ring and cam cover.
Camshaft Sensor Ring
Cam p

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JAGUAR S TYPE 1999 1.G Powertrain Manual J.303.1318
V8 Engine AJ-V6/AJ28
48
Exhaust Manifold
The exhaust manifolds have a double wall
construction and are manufactured from
austenitic stainless steel. The double wall
construction has a numbe

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JAGUAR S TYPE 1999 1.G Powertrain Manual V8 EngineAJ-V6/AJ28
49
Cooling System
The AJ28 engine retains the same basic cooling
system as the previous V8 engines but shares the
radiator, fan shroud assembly, de-gas circuit and
bottom hose oil

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JAGUAR S TYPE 1999 1.G Powertrain Manual V8 Engine AJ-V6/AJ28
50centre if the coolant level drops.
¥ The fail safe cooling strategy described for the
V6 is not applicable to the AJ28 engine.
Cooling System Hoses
The cooling system hoses are

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JAGUAR S TYPE 1999 1.G Powertrain Manual V8 EngineAJ-V6/AJ28
51
Air Induction System
Charge air is supplied to the cylinders via an air
cleaner, induction tube, throttle body, throttle
body adaptor and induction manifold.
The throttle body a