Connecting rods

Make

Alfa Romeo

Model

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

Year

1995–2000

Section

Technical Features › Connecting rods

Variants – 3.0 V6 24VConnecting rods

Connecting rods

Unit: mm

Diameter of connecting rod bush hole "a"		20.005 ÷ 20.015
Inside diameter of big ends "b"		55.511 ÷ 55.524
Difference in weight between connecting rods		≤ 2 g
Big end end float		0.2 ÷ 0.3
Clearance between gudgeon pins and small end bushes	Class A - Black	0.008 ÷ 0.021
	Class B - White	0.005 ÷ 0.018

Connecting rod half bearings

Unit: mm

Thickness of connecting rod half bearings "a"	Class A - Red	1.737 ÷ 1.745
	Class B - Blue	1.741 ÷ 1.749
Operating clearance between rod pins and their half bearings	Class A - Red	0.034 ÷ 0.060
	Class B - Blue	0.036 ÷ 0.062

CYLINDER HEADS

Heads

Unit: mm

Diameter of valve guide seats "a"		12.000 ÷ 12.018
Valve guide protrusion "b"		10.35 ÷ 10.65
Diameter of hydraulic tappets "c"		33.000 ÷ 33.025
Diameter of valve seat housings "d"	Intake	36.500 ÷ 36.525
	Exhaust	32.000 ÷ 32.025
Minimum permissible height of heads after refacing "e"		134.85 ÷ 135.15
Maximum error of flatness of head lower surface		0.05
Diameter of camshaft supports "f"		27.010 ÷ 27.036
Length of camshaft support shoulders		19.902 ÷ 19.935

Valve guides

Unit: mm

Outside diameter of valve guides "a"	Intake	12.040 ÷ 12.051 (*)
	Oversize 0.2
	Exhaust	12.050 ÷ 12.068 (**)
	Oversize 0.2
Inside diameter of valve guides (bore) "b"		7.000 ÷ 7.015
Interference between valve guides and their seats	Intake	0.022 ÷ 0.051
	Exhaust	0.032 ÷ 0.068

(*): Spare 12.053 ÷ 12.064
(**): Spare 12.064 ÷ 12.082

12 General