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Home/Audi/A4/Audi A4 B5 facelift (1999-2001)/Repair manual/Mechanical/2.8L V6 30V (Engine Code: Aha, Atq): Specifications
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2.8L V6 30V (Engine Code: Aha, Atq): Specifications Audi A4 B5 facelift

Mechanical ~123 words

BEARING BUSHING FOR TORQUE CONVERTER

Note. Ensure completed engine or crankshaft has bearing bushing installed. The bushings must be installed before installing the driveplate. (Схема №72)

Removal and installation procedure not provided by manufacturer. To gain access to bearing bushing, see DRIVE PLATE (A/T) .

Crankcase Capacity

See CRANKCASE CAPACITY SPECIFICATIONS table for oil capacity specifications.

Application(1) Qts. (L)
Audi A4 & A66.3 (6.0)
(1) Includes oil filter.
(1)Includes oil filter.

CRANKCASE CAPACITY SPECIFICATIONS

TORQUE SPECIFICATIONS

Application (1)Ft. Lbs. (N.m)
Camshaft Sprocket Bolt40 (55)
Connecting Rod Bolts (M8) (2)
Step 122 (30)
Step 2Additional 1/4 Turn
Connecting Rod Bolts (M8.5) (2)
Step 130 (40)
Step 2Additional 1/4 Turn
Crankshaft Rear Oil Seal Carrier Bolts14-18 (20-25)
Cylinder Head Bolts (2)
Step 144 (60)
Step 2(4) Additional 1/2 Turn
Drive Plate Bolts (A/T) (2)
Step 144 (60)
Step 2Additional 1/4 Turn
Dual-Mass Flywheel Bolts (M/T) (2)
Step 144 (60)
Step 2Additional 1/2 Turn
Engine Support-To-Engine Mount Nut33 (45)
Exhaust Manifold-To-Cylinder Head Bolt18 (25)
Exhaust Pipe-To-Manifold Nut18 (25)
Idler Pulley Bolt33 (45)
Main Bearing Cap Bolts (2)
Step 144 (60)
Step 2Additional 1/2 Turn
Main Bearing Cap Side Bolts (3)18 (25)
Oil Check Valves18 (25)
Oil Cooler Retaining Nuts22 (30)
Oil Pan Bolts (Upper-To-Cylinder Block) (5)
M67 (10)
M815 (20)
Oil Pan Bolts (Upper-To-Transmission) (5)
M818 (25)
M1033 (45)
Oil Cooler Nut22 (30)
Oil Pressure Switch18 (25)
Oil Pump Chain Sprocket Bolt (6)18 (25)
Oil Pump Pressure Relief Valve Plug (6)30 (40)
Oil Spray Jet Valve30 (40)
Pressure Plate-To-Dual-Mass Flywheel Bolts18 (25)
Screws & Nuts
M815 (20)
M1033 (45)
M1244 (60)
Starter Bolts
Upper Bolt33 (45)
Lower Bolt48 (65)
Timing Belt Idler Pulley Center Bolt33 (45)
Timing Belt Tensioner Roller15 (20)
Timing Belt Tensioner Arm-To-Block Bolt15 (20)
Transmission-To-Engine Bolts
M1033 (45)
M1248 (65)
Torque Arm-To-Engine Bolt18 (25)
Torque Converter-To-Drive Plate Bolt63 (85)
Vibration Damper-To-Timing Belt Sprocket Bolt
A4 & A615 (20)
Vibration Damper Center Bolt (2) , (4)
Step 1147 (200)
Step 2Plus Additional 180 Degree Turn
Viscous Fan-To-Pulley Nut
Using Torque Wrench & Spanner Wrench (3312)27 (37)
Using Torque Wrench Without Spanner wrench (3312)52 (70)
Wheel Bolts89 (120)
INCH Lbs. (N.m)
Camshaft Bearing Cap Bolt89 (10)
Coolant Line-To-Oil Pan89 (10)
Cylinder Head (Valve) Cover Nuts89 (10)
Intake Manifold Bolts89 (10)
Oil Pan Bolts (Lower-To-Upper Pan)
M689 (10)
Oil Pump-To-Engine Block Bolts (Flange Type) (6)89 (10)
Oil Pump-To-Engine Block Bolts (Chain Driven) (6)177 (20)
Screws & Nuts
M689 (10)
Thermostat Housing Bolt89 (10)
Timing Belt Tensioner-To-Engine Block Bolt89 (10)
Water Pump Bolts89 (10)
(1) Replace all self-locking nuts after removal. (2) Always use NEW bolts. For connecting rods, oil threads and contact areas. (3) Hand tighten main bearing cap bolts before final tightening to specified torque. (4) Two turns of 90 degrees are allowed. (5) Oil pan requires special tightening sequence. See OIL PAN(A4 & A6) for replacement procedure. (6) For more information on oil pump tightening torques (Схема №88)- (Схема №90).
(1)Replace all self-locking nuts after removal.
(2)Always use NEW bolts. For connecting rods, oil threads and contact areas.
(3)Hand tighten main bearing cap bolts before final tightening to specified torque.
(4)Two turns of 90 degrees are allowed.
(5)Oil pan requires special tightening sequence. See OIL PAN(A4 & A6) for replacement procedure.
(6)For more information on oil pump tightening torques (Схема №88)- (Схема №90).

TORQUE SPECIFICATIONS

GENERAL SPECIFICATIONS

ApplicationSpecification
Displacement169 Cu. In. (2.8L)
Bore3.248" (82.50 mm)
Stroke3.402" (86.40 mm)
Compression Pressure
New131-203 psi (9-14 bar)
Wear Limit109 psi (7.5 bar)
Maximum Difference Between Cylinders44 psi (3 bar)
Compression Ratio10.6:1
Fuel SystemBosch Motronic

GENERAL SPECIFICATIONS

CRANKSHAFT, MAIN BEARINGS & CONNECTING ROD BEARINGS SPECIFICATIONS

ApplicationIn. (mm)
Crankshaft End Play
Standard.0028-.0091 (.07-.23)
Service Limit.0098 (.25)
Main Bearings
Journal Diameter
Standard2.5590 (65.00)
Maximum2.5599 (65.022)
Minimum2.5574 (64.958)
First Undersize2.5492 (64.75)
Maximum2.5501 (64.77 2)
Minimum2.5476 (64.708)
Second Undersize2.5394 (64.50)
Maximum2.5402 (64.522)
Minimum2.5377 (64.458)
Third Undersize2.5296 (64.25)
Maximum2.5304 (64.272)
Minimum2.5279 (64.208)
Oil Clearance
Standard.0007-.0018 (.018-.045)
Service Limit.0039 (.10)
Connecting Rod Bearings
Journal Diameter
Standard2.12598 (54.00)
Maximum2.1268 (54.022)
Minimum2.1243 (53.958)
First Undersize2.1170 (53.75)
Maximum2.1169 (53.772)
Minimum2.1144 (53.708)
Second Undersize2.1060 (53.50)
Maximum2.1072 (53.522)
Minimum2.1046 (53.458)
Third Undersize2.096 (53.25)
Maximum2.0973 (53.272)
Minimum2.0948 (53.208)
Oil Clearance (1)
Standard.0006-.0024 (.015-.062)
Service Limit.0047 (.12)
(1) When checking connecting rod bearing oil clearance, tighten connecting rod bolt to 15 ft. lbs. (20 N.m).
(1)When checking connecting rod bearing oil clearance, tighten connecting rod bolt to 15 ft. lbs. (20 N.m).

CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS

PISTONS, PISTON PINS & PISTON RINGS SPECIFICATIONS

ApplicationIn. (mm)
Piston Pin(1)
Piston Diameter
Standard3.2472 (82.48)
First Oversize3.2575 (82.74)
Second Oversize3.2671 (82.985)
Maximum Allowable Deviation From Nominal Dimension.0016 (.04)
Rings
End Gap
Ring No. 1
Standard.014-.020 (.35-.50)
Service Limit.039 (1.0)
Ring No. 2
Standard.020-.028 (.50-.70)
Service Limit.043 (1.4)
Ring No. 3
Standard.010-.020 (.25-.50)
Service Limit.031 (.80)
Side Clearance
Standard.0008-.31 (.02-.08)
Service Limit.004 (.10)
(1) Piston pin information not available from manufacturer.
(1)Piston pin information not available from manufacturer.

PISTONS, PINS & RINGS

CYLINDER BLOCK SPECIFICATIONS

ApplicationIn. (mm)
Cylinder Bore Diameter
Standard3.248 (82.51)
First Oversize3.258 (82.76)
Second Oversize3.268 (83.01)
Maximum Difference Between Actual & Nominal Dimension.0031 (.08)

CYLINDER BLOCK

ENGINE VALVES & VALVE GUIDES SPECIFICATIONS

ApplicationSpecification
Intake Valve
Face Angle(1) 45°
Installed Height(2)
Stem Diameter.2346-.2350" (5.96-5.97 mm)
Valve Guide Side Play (3).032" (.8 mm)
Valve Length4.128-4.147" (104.84-105.34 mm)
Exhaust Valve
Face Angle(1) 45°
Installed Height(2)
Stem Diameter.2339-.2343" (5.94-5.95 mm)
Valve Guide Side Play (3).032" (.8 mm)
Valve Length4.080-4.100" (103.64-104.14 mm)
(1) Valves must not be refaced by grinding. Only hand lapping is allowed. (2) VALVE SEAT procedure gives information on valve installed height. See CYLINDER HEAD under OVERHAUL. (3) See CYLINDER HEAD under OVERHAUL for correct valve guide side play checking procedure.
(1)Valves must not be refaced by grinding. Only hand lapping is allowed.
(2)VALVE SEAT procedure gives information on valve installed height. See CYLINDER HEAD under OVERHAUL.
(3)See CYLINDER HEAD under OVERHAUL for correct valve guide side play checking procedure.

VALVES & VALVE GUIDES

CYLINDER HEAD SPECIFICATIONS

ApplicationSpecification
Cylinder Head Height5.482" (139.25 mm)
Maximum Warpage.002" (.05 mm)
Valve Guides(1)
Valve Seat & Valve Stem Height(2)
(1) VALVE GUIDES procedure gives information on how to determine if valve guides are worn enough to require replacement. See CYLINDER HEAD under OVERHAUL. (2) VALVE SEAT procedure gives information on how to determine if valve seats can be resurfaced. Also see VALVE SEAT. See CYLINDER HEAD under OVERHAUL.
(1)VALVE GUIDES procedure gives information on how to determine if valve guides are worn enough to require replacement. See CYLINDER HEAD under OVERHAUL.
(2)VALVE SEAT procedure gives information on how to determine if valve seats can be resurfaced. Also see VALVE SEAT. See CYLINDER HEAD under OVERHAUL.

CYLINDER HEAD

CAMSHAFT SPECIFICATIONS

Application(1) In. (mm)
End Play
New.002-.006 (.05-.15)
Service Limit.008 (.20)
Oil Clearance
Service Limit.004 (.10)
Lateral Run Out (Maximum).0004 (.01)
(1) Make all measurements with lifters removed.
(1)Make all measurements with lifters removed.

CAMSHAFT

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