Engine specifications

Make

Alfa Romeo

Model

145/146 Factory Service Manual

Year

1994–1999

Section

Engine › Engine specifications

Technical data and maintenanceEngine specifications

ENGINE SPECIFICATIONS

TECHNICAL DATA

E1	AR 33501	AR 33201
Engine type	AR 33501	AR 33201
Cycle	Otto 4-stroke	Otto 4-stroke
Fuel system/ignition	Multi-Point IAW	Multi-Point Motronic MP3.1 (Δ)
Firing order	1 - 3 - 2 - 4
Displacement	cm³	1351	1596
Number of cylinders	4 horizontal opposed		4 horizontal opposed
Bore	mm	80	84
Stroke	mm	67.2	72
Maximum power	HP CEE (kW CEE)	90 (66)	103 (76)
	rpm	6000	6000
Maximum torque	kgm CEE (Nm CEE)	11.7 (115)	13.7 (134)
	rpm	4400	4500
Compression ratio	9.5 : 1		9.5 : 1
Engine oil pressure (with engine oil at 100°C)	bar	> 0.8	> 0.8
- At idle speed	bar	> 4	> 4
Idle r.p.m.	rpm	850 ± 50	850 ± 50
(Δ) Multi-Point Rochester for after change version.

COMPLETE CRANKCASE

Crankcase

	AR 33501	AR 33201
Diameter of cylinders "a"	Class A - Blue	80.000 ÷ 80.010	84.000 ÷ 84.010
	Class B - Pink	80.010 ÷ 80.020	84.010 ÷ 84.020
	Class C - Green	80.020 ÷ 80.030	84.020 ÷ 84.030
	Class D - Yellow	80.030 ÷ 80.040	84.030 ÷ 84.040
	Class E - White	80.040 ÷ 80.050	84.040 ÷ 84.050
	Oversize 0.2	80.200 ÷ 80.210	84.200 ÷ 84.210
	Oversize 0.4	80.400 ÷ 80.410	84.400 ÷ 84.410
	Oversize 0.6	80.600 ÷ 80.610	84.600 ÷ 84.610
Diameter of main journals "b"	63.663 ÷ 63.673		63.663 ÷ 63.673
Width of rear main journal shoulder "c"	23.68 ÷ 23.73		23.68 ÷ 23.73

Crankshaft

	AR 33501	AR 33201
Diameter of connecting rod pins "a"	Class A - Red	49.992 ÷ 50.000	49.992 ÷ 50.000
	Class B - Blue	49.984 ÷ 49.992	49.984 ÷ 49.992
Diameter of main bearing journals "b"	Class A - Red	59.944 ÷ 59.957	59.954 ÷ 59.964
	Class B - Blue	59.944 ÷ 59.954	59.944 ÷ 59.954
Length of rear main bearing journal shoulder "c"	28.51 ÷ 28.55		28.51 ÷ 28.55

02 Maintenance