Engine specifications (Audi 80 B3)

General information

Code designations:

• 1.6 l - RN
• 1.8 l — RU, DZ, NE, PM, JN
• 2.0 l - FOR

Working volume:

• 1.6 l - 1595 cm³
• 1.8 l - 1781 cm³
• 2.0 l - 1984 cm³

Cylinder Bore/Piston Stroke:

• 1.6 l — 81.0/77.4 mm
• 1.8 l - 81.0/86.4 mm
• 2.0 l - 82.5/92.8 mm

Compression ratio:

• 1.6 l - 9.0:1
• 1.8L RU, PM and JN — 9.0:1
• 1.8L DZ and NE - 10.0:1
• 2.0L - 10.4:1

Minimum compression pressure:

• All engines except NE - 7.0 bar
• NE engine - 7.5 bar
• Maximum difference between cylinders is 3 bar

Cylinder firing order: 1 - 3-4 - 2 (No. 1 from timing belt)

Lubrication system

Oil Type/Specification - Multi-Purpose Motor Oil, SAE 15W/50 or 20W/50

Amount of oil:

• With filter replacement - 3.0 l.
• Without filter replacement - 2.5 l.
• The difference between the min. and max. marks on the dipstick is 1.0 l.

Oil pressure (minimum) - 2.0 bar at 2000 rpm and oil temperature 80°C
Oil pump:

• Gear clearance (maximum) - 0.20 mm
• Lateral clearance of gears (maximum) - 0.15 mm

Oil filter — Champion C101

Intermediate shaft

Lateral play - 0.25 mm

Crankshaft

Needle bearing depth - 1.5 mm

Lateral play:

• New - 0.07-0.17 mm
• Wear limit - 0.25 mm
• Maximum working clearance of the main bearing is 0.017 mm

Main bearing journal diameter:

• Standard size - 53.96 - 53.98 mm
• 1st repair size - 53.71 - 53.73 mm
• 2nd repair size - 53.46 - 53.48 mm
• 3rd repair size - 53.21 - 53.23 mm

Crankpin diameter:

• Standard size - 45.96 - 45.98 mm
• 1st repair size - 45.71 - 45 73 mm
• 2nd repair size - 45.46 - 45.48 mm
• 3rd repair size - 45.21 - 45.23 mm
• Maximum ovality of the neck is 0.03 mm

Pistons and rings

Piston diameter:	1.6/1.8	2.0
Standard	80.98 mm	82.48 mm
1st repair size	81.23 mm	82.73 mm
2nd repair size	81.48 mm	82.98 mm
Cylinder bore diameter:
Standard	81.01 mm	82.51 mm

(The original article is available on the online resource: AudiManual.ru)