Rod

Make

Alfa Romeo

Model

155 Factory Service Manual

Year

1992–1998

Section

Rod › Rod

Engine – mechanical (Twin Spark)Rod

Rod

	Diameter of rod small end bushing bore (a)	22.005 ÷ 22.015
Inner diamter of rod big end (b)	53.695 ÷ 53.708 53.695 ÷ 53.705 (*)
Weight difference between rods	≤ 2 g
Clearance between rod small end bushing and gudgeon pin	Black	0.008 ÷ 0.021 0.009 ÷ 0.024 (*)
	White	0.005 ÷ 0.018 0.008 ÷ 0.021 (*)

(*) Only relative to AR67202 engine

Rod bearing halves

	Thickness of rod half bearing (a)	A - Red	1.832 ÷ 1.836
Radial play between pins and rod bearings	B - Blue	1.836 ÷ 1.841
	C - Yellow	1.841 ÷ 1.845
	A - Red	0.025 ÷ 0.052 0.025 ÷ 0.049 (*)
B - Blue	0.021 ÷ 0.051 0.021 ÷ 0.048 (*)
C - Yellow	0.020 ÷ 0.048 0.020 ÷ 0.045 (*)
Axial play of rod head	0.2 ÷ 0.3

(*) Only relative to AR67202 engine

03 Engine