Technical features of the engine

Make

Alfa Romeo

Model

145/146 Factory Service Manual

Year

1994–1999

Section

Engine › Technical features of the engine

Technical data and maintenanceTechnical features of the engine

TECHNICAL FEATURES OF THE ENGINE

SPECIFIC DATA

Engine		AR 67501 - AR 33601 (▲)
Cycle		four-stroke Diesel engine
Feed		Direct injection with supercharging
Piston displacement	cm3	1929
Cylinders' number		4 in line
Boring	mm	82.6
Stroke	mm	90
Maximum Power	CV CEE (kW CEE)	90 (66)
	revs/min	4100 4200 (•)
Pull-in Torque	kgm CEE (Nm CEE)	19.0 (186)
	revs/min	2400 2500 (•)
Compression ratio		19.2 : 1
Firing order		1 - 3 - 4 - 2
Slow running	revs/min	900 ± 20 900 ± 40 (•)

(▲): Version with catalyst (•): For versions/markets envisaged.

COMPLETE CYLINDER BLOCK

Cylinder block

		Unit: mm
Diameter of main bearing "a"		56.717 ÷ 56.735
Shoulder length of rear main bearing "b"		23.12 ÷ 23.20
Diameter of cylinder barrels "c"	Class A	82.600 ÷ 82.610
	Class B	82.610 ÷ 82.620
	Class C	82.620 ÷ 82.630
	Class D	82.630 ÷ 82.640
	Class E	82.640 ÷ 82.650
	Oversize by 0.1

Driving shaft

		Unit: mm
Diameter of main journals "a"	Class 1	52.995 ÷ 53.004
	Class 2	52.986 ÷ 52.995
	Undersize by 0.127
Diameter of rod pins"b"	Class 1	50.796 ÷ 50.805
	Class 2	50.787 ÷ 50.796
	Undersize by 0.127
Length of rear main journal "c"		27.975 ÷ 28.025

Half bearings

		Unit: mm
Thickness of half bearings "a"	Class A (Red)	1.837 ÷ 1.843
	Class B (Blue)	1.843 ÷ 1.849
	Undersize by 0.127
Radial clearance between pins and main bearings	Class A (Red)	0.027 ÷ 0.066
	Class B (Blue)	0.024 ÷ 0.063

02 Maintenance