ENGINE - 4.0 V8

ENGINE TUNING DATA

1

INFORMATION

ENGINE - 4.0 V8

Type

4.0 Litre V8

.................................................................................

Firing order

1-8-4-3-6-5-7-2

.....................................................................

Cylinder Numbers
Left bank

1-3-5-7

..........................................................................

Right bank

2-4-6-8

........................................................................

No 1 Cylinder location

Pulley end of left bank

...................................................

Spark plugs
Make and type

Up to 99MY

Champion RN11YCC

.............................................................

From 99MY

Champion RC11PYB4

.............................................................

Gap

Up to 99MY

0.90 - 1.00 mm

.............................................................

0.035 - 0.040 in

From 99MY

1.00

±

0.05 mm

.............................................................

0.040

±

0.002 in

NOTE: Do not attempt to adjust the gaps of RC11PYB4 spark plugs.

Valve timing

Inlet

Exhaust

Opens

28

°

BTDC

..............................................................................

66

°

BBDC

Closes

77

°

ABDC

..............................................................................

39

°

ATDC

Idle speed - controlled by Engine Management System
Up to 99MY

700

±

20 rev/min

......................................................................

From 99MY

660 rev/min

......................................................................

Base idle setting

Not adjustable (idle air control valve position checked

.............................................................

via TestBook)

CO at idle (vehicles without heated oxygen sensors)
Up to 99MY

1.0 - 2.0 %

......................................................................

From 99MY

0.5 - 1.0 %

......................................................................

Calculated Load Value (CLV) - Engine fully warm, in neutral gear, with all loads off
At Idle

2.8 to 3.8%

...............................................................................

At 2500 rev/min

10%

±

1%

................................................................

Air mass flow at sea level - Engine fully warm, in neutral gear, with all loads off
At Idle

20

±

3 kg/hr

...............................................................................

At 2500 rev/min

60

±

3 kg/hr

................................................................