Main half bearings

Make

Alfa Romeo

Model

GTV / Spider GTV and Spider (916) Factory Service Manual

Year

1995–2000

Section

Engine technical features (V6) › Main half bearings

00 Technical data and maintenanceMain half bearings

Main half bearings

Unit: mm

Thickness of main half bearings "a"	Class A - Red	1.833 ÷ 1.839
	Class B - Blue	1.839 ÷ 1.845
	Class C - Green	1.845 ÷ 1.851
Operating clearance between main journals and half bearings		0.000 ÷ 0.024

Half thrust rings

Unit: mm

Thickness of half thrust rings "a"	2.310 ÷ 2.360
Crankshaft end float	0.080 ÷ 0.265

Engine flywheel

Unit: mm

Inside diameter of centre bushing (bore) "a"	35.000 ÷ 35.025
Heating temperature of ring gear for fitting on flywheel	120° ÷ 140 °C

Cylinder liners

(●) Area for dimensional inspection

Unit: mm

Diameter of cylinder liners "a"	Class A - Blue	92.985 ÷ 92.994
	Class B - Pink	92.995 ÷ 93.004
	Class C - Green	93.005 ÷ 93.014
Protrusion of cylinder liners from crankcase "b"		0.01 ÷ 0.06
Cylinder liner limit of ovalization / taper		0.01

Oil pump

Unit: mm

Clearance between driven gear and inner gear "a"	0.040 ÷ 0.290
End float between pump casing rest surface and upper side of gears "b"	0.025 ÷ 0.075
Clearance between pump casing and driven gear "c"	0.170 ÷ 0.275

02 Maintenance