Side camshaft bearings

Make

Alfa Romeo

Model

145/146 Factory Service Manual

Year

1994–1999

Section

Engine › Side camshaft bearings

Technical data and maintenanceSide camshaft bearings

Side camshaft bearings

Unit: mm
Inside diameter of camshaft bearings	front "a"	29.990 ÷ 30.015
	rear "b"	23.990 ÷ 24.015
Outside diameter of camshaft bearings "c"		42.995 ÷ 43.015

Cylinder head seal

Mean piston protrusion (1)		Thickness of cylinder head seal to be used
from engine no. 1762797	up to engine no. 1762798
< 0.7 mm	< 1.05 mm	1.67 mm
0.7 ÷ 0.8 mm	1.05 ÷ 1.15 mm	1.75 mm (*)
0.8 ÷ 0.9 mm	1.15 ÷ 1.25 mm	1.85 mm (**)
> 0.9 mm	> 1.25 mm	1.93 mm (***)

(1): To be found by measuring it for each cylinder in points A and B of the piston; calculate the mean between the two values and consider the highest mean between the pistons to define the seal to be used.

ANGULAR VALUES OF ACTUAL TIMING DIAGRAM

	Opens (before T.D.C.)	"a"	6°
Intake	Closes (after B.D.C.)	"b"	26°
	Intake angle	"c"	212°
Exhaust	Opens (before B.D.C.)	"d"	26°
	Closes (after T.D.C.)	"e"	6°
	Exhaust angle	"f"	212°

(1) Exhaust (A) T.D.C. (B) B.D.C.

02 Maintenance