ENGINE 3.9 V8i (page 2 of 2)

05

ENGINE TUNING DATA

2

INFORMATION

Distributor
Make/type

Lucas 35DLM8 electronic

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

Rotation

Clockwise

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

Air gap

0.20-0.35mm

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

Part number

Lucas

Rover

8.13:1, non catalyst

42584A

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

ERR 4753

9.35:1, non catalyst

42582A

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

ERR 4754

9.35:1, catalyst

42583A

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

ERR 4755

Centrifugal Advance
Decelerating check-vacuum hose disconnected
Distributor rpm decelerating speeds

8.13:1 non catalyst
2000

Distributor advance

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

5

°

30’ to 8

°

30’

1400 .................................................................................

6

°

18’ to 8

°

30’

800 ...................................................................................

2

°

to 4

°

9.35:1 non catalyst
2200

Distributor advance

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

7

°

to 10

°

1400 .................................................................................

7

°

48’ to 10

°

650 ...................................................................................

1

°

to 3

°

9.35:1 catalyst
2200

Distributor advance

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

5

°

30’ to 8

°

30’

1400 .................................................................................

6

°

18’ to 8

°

30’

800 ...................................................................................

2

°

to 4

°

Fuel
8.13:1, non catalyst

91 RON minimum unleaded

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

9.35:1, non catalyst

95 RON minimum unleaded

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

9.35:1, catalyst

95 RON minimum unleaded

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

USA-Premium unleaded (PUG)

CLC or AKI 90 octane minimum

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

95 RON minimum

Australian market variations
Fuel

91 RON minimum unleaded

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

Compression ratio

8.13:1

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

Spark plug

Champion RN12YC

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

Spark plug gap

0.84-0.96mm (0.033-0.038 in)

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

Ignition Timing at 800 rev/min max
(vacuum pipe disconnected)

2

°

BTDC

±

1

°

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

Exhaust gas idle CO

1% max (hot)

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