Audi BBJ Specifications
| Engine Model: Audi BBJ |
| Engine Type: 4-cycle 6-cylinder DOHC 30-valve liquid-cooled gasoline |
| Total Displacement: 181.6 cu.in (2.97 L) |
| Rated Engine Power: 220 Hp (162 kW) at 6300 rpm |
| Fuel System Type: Sequential multi-port fuel injection (MPFI) |
____________________________________________________________________________________
The Audi BBJ is a 3.0-liter, six-cylinder,
naturally aspirated gasoline engine, representing the first generation
of Audi's 3.0L 30-valve V6 powerplant. This engine is a member of the
Volkswagen Group's "BBJ/ASN" engine family and was developed as a
refined, torquey, and smooth-performing six-cylinder option for Audi's
mid-range and executive vehicles in the early 2000s.
It features an all-aluminum construction, dual overhead camshafts (DOHC)
per bank, five valves per cylinder, and a variable length intake
manifold. Utilizing multi-point fuel injection and a timing belt drive,
the BBJ prioritizes linear power delivery, mechanical refinement, and
robust durability over the high-revving character or forced induction of
more performance-oriented engines.
While not known for exceptional power output, it provides a substantial
torque reserve and a notably smooth operational character. Its design is
largely free of major systemic flaws, though its timing belt service is
critical and the five-valve head can be complex for major repairs. The
BBJ established a strong foundation for Audi's subsequent V6 engine
developments.
Engine Type: V6 cylinder, 90-degree bank angle, liquid-cooled, naturally
aspirated, multi-point fuel injection (MPFI).
Displacement: 2976 cc (2.976 L) / 181.6 cu.in.
Bore x Stroke: 82.5 mm x 92.8 mm / 3.25 in x 3.65 in.
Compression Ratio: 10.5:1.
Firing Order: 1-4-3-6-2-5.
Direction of Rotation: Clockwise (viewed from the front/flywheel end).
Maximum Power Output: 162 kW (220 hp) at 6300 rpm.
Maximum Torque Output: 290 Nm (214 lb-ft) at 3200 rpm.
Fuel Requirement: Premium unleaded gasoline, 95 RON (91 AKI) minimum.
Emission Standards Compliance: Euro 4 / US LEV.
Material: Aluminum alloy with cast-in gray iron cylinder liners (Alusil
technology). This design reduces overall weight while maintaining
cylinder durability.
Construction: 90-degree V6 configuration with a split crankcase
(bedplate). The crankshaft is supported by four main bearings. The
cylinder banks are offset, and shared crankpins are used with a
30-degree offset for even firing.
Crankshaft: Forged steel crankshaft. Main bearing journal diameter: 65.0
mm / 2.559 in. Crankpin journal diameter: 54.0 mm / 2.126 in.
Pistons: Aluminum alloy pistons with a dished crown, designed for the
pent-roof five-valve combustion chamber. Connecting Rods: Forged steel
connecting rods.
Material: Aluminum alloy.
Head Construction: Dual overhead camshafts (DOHC) per bank, 30-valve
design (5 valves per cylinder: 3 intake, 2 exhaust). The camshafts are
driven by a single, central timing belt.
Valve Arrangement: Valves are arranged in a compact pent-roof combustion
chamber. They are actuated via bucket tappets with shims for manual
valve clearance adjustment. This is an interference engine. Variable
Valve Timing: None on the BBJ generation. The intake camshafts are
fixed.
Variable Intake Manifold: A two-stage intake manifold with switchable
flap valves optimizes low-end torque and high-end power. Valve
Diameters: Intake (small): 26.0 mm / 1.024 in. Intake (large): 29.5 mm /
1.161 in. Exhaust: 30.5 mm / 1.201 in.
Injection Type: Sequential multi-port fuel injection (MPFI).
Engine Management: Bosch Motronic ME7.1 engine control unit.
Fuel Delivery: Dual electric in-tank fuel pumps supply constant pressure
to the fuel rail.
Fuel Rail and Injectors: Six solenoid-operated fuel injectors.
Throttle Body: Electronically controlled (drive-by-wire) throttle body.
Air Intake: Naturally aspirated via an air filter, mass air flow sensor,
and the variable geometry intake manifold.
Type: Pressure-fed, full-flow filtration with a gear-type oil pump.
Oil Pump: Gear-type pump, driven by the crankshaft.
Oil Filter: Cartridge-type, mounted on the front lower section of the
engine block.
Oil Cooler: Engine oil cooler (oil-to-coolant) is standard equipment.
Oil Capacity (including filter): 6.5 L / 6.9 US qt.
Recommended Oil Grade: Full synthetic engine oil meeting VW oil standard
502 00. Viscosity: 5W-40 or 0W-40. Operating Oil Pressure: 2.0 bar at
hot idle, 3.0 - 4.0 bar at 2000 rpm. Imperial: 29 psi (idle), 44 - 58
psi (2000 rpm).
Type: Pressurized, dual-circuit system with a separate expansion tank.
Water Pump: Centrifugal pump, driven by the timing belt.
Thermostat: Wax pellet type, opening temperature 87°C (189°F).
Coolant Capacity: 9.0 L / 9.5 US qt (entire system).
Coolant Type: VW G12 (pink) or G12++ ethylene glycol-based antifreeze.
Electrical System: 12-volt negative ground. 120-amp alternator.
Ignition System: Distributorless ignition system (DIS) with three
dual-spark ignition coil packs.
Engine Management: Bosch Motronic ME7.1 as stated. The system uses a
hot-film mass air flow (MAF) sensor and two knock sensors (one per
bank).
Crankcase Ventilation: A closed Positive Crankcase Ventilation (PCV)
system with an internal oil separator.
Overall Length: 550 mm / 21.7 in.
Overall Width: 750 mm / 29.5 in.
Overall Height: 650 mm / 25.6 in.
Dry Weight: 165 kg / 364 lbs.
Engine Oil Change Interval: Every 15,000 km or 12 months. Severe service
intervals are 7,500 km or 6 months. Imperial: 9,300 miles / 4,700 miles.
Oil Filter Change: Every oil change. Fuel Filter Change: Every 60,000 km
(37,300 miles). Air Filter Change: Every 60,000 km or as inspected.
Timing Belt Replacement: This is an interference engine. Replace the
timing belt, tensioner, idler rollers, and water pump every 105,000 km
(65,000 miles) or 5 years. This service is non-negotiable.
Spark Plug Replacement: Specified long-life platinum spark plugs every
60,000 km (37,300 miles). Coolant Replacement: Every 2 years or 60,000
km (37,300 miles). Valve Clearance Adjustment: Check and adjust (via
replacement of shims under bucket tappets) every 105,000 km (65,000
miles) during the major timing belt service. Clearance (cold): Intake:
0.15-0.25 mm (0.006-0.010 in). Exhaust: 0.25-0.35 mm (0.010-0.014 in).
Cylinder Head Bolts: Torque-to-yield (TTY) bolts. Tighten in the
specified sequence: Step 1: 60 Nm (44 lb-ft). Step 2: +90° turn. Step 3:
Final +90° turn. These bolts are single-use.
Main Bearing Cap Bolts (Bedplate): 80 Nm (59 lb-ft) + 90° turn.
Connecting Rod Cap Bolts: 30 Nm (22 lb-ft) + 90° turn (replace bolts).
Spark Plugs: 30 Nm (22 lb-ft).
Oil Drain Plug: 30 Nm (22 lb-ft).
Camshaft Sprocket Bolts: 90 Nm (66 lb-ft).
Crankshaft Pulley Bolt: 250 Nm (184 lb-ft) + 90° turn.
Wheel Bolts: 120 Nm (89 lb-ft).
The Audi BBJ 3.0L 30V V6 engine was used in several core Audi models
during the early-to-mid 2000s.
Audi A4 (B6, 2001-2005): A4 3.0.
Audi A4 (B7, 2005-2008): A4 3.0 (early B7 models before the introduction
of the 3.2L FSI).
Audi A6 (C5, 1999-2004): A6 3.0.
Audi A6 (C6, 2004-2008): A6 3.0 (base V6 engine at launch).
Audi allroad (C5, 2000-2005): allroad 3.0.
Audi TT (8N, 2003-2006): TT 3.0 (coupe and roadster).
This engine is often referenced under its related engine code ASN in
many markets and vehicle identification documents. The BBJ and ASN codes
denote the same fundamental 3.0L 30V V6 engine.
____________________________________________________________________________________
| Car Engines Technical Specifications |
| Small Engines Technical Specifications |
| Industrial Engines Technical Specifications |
| Outboard Engines Technical Specifications |
