MGB Tuning Data

 

 

 

 

 

 

 

Point

Static

Strob.

 

Plug

Engine

 

Intro

 

Idle

Dist.

Dist.

Gap

Timing

Timing

Plug

Gap

Series

No.

Dates

Market

RPM

Type

S/N

(In)

Deg BTDC

Deg BTDC

Type

(In)

18G (LC)

 

May-62

ALL

500

25D4

40916

.014 to .016

8

12 @ 600

N-9Y

.024 to .026

18G (HC)

 

May-62

ALL

500

25D4

40897

.014 to .016

10

14 @ 600

N-9Y

.024 to .026

18GA (LC)

 

Feb-64

ALL

500

25D4

40916

.014 to .016

8

12 @ 600

N-9Y

.024 to .026

18GA (HC)

 

Feb-64

ALL

500

25D4

40897

.014 to .016

10

14 @ 600

N-9Y

.024 to .026

18GB (LC)

 

Oct-64

ALL

500

25D4

40916

.014 to .016

8

12 @ 600

N-9Y

.024 to .026

18GB (HC)

 

Oct-64

ALL

500

25D4

40897

.014 to .016

10

14 @ 600

N-9Y

.024 to .026

18GD (LC)

 

Nov-67

NOT USA

500

25D4

40916

.014 to .016

8

12 @ 600

N-9Y

.024 to .026

18GD (HC)

 

Nov-67

NOT USA

500

25D4

40897

.014 to .016

10

14 @ 600

N-9Y

.024 to .026

18GF

 

Oct-67

USA

900

25D4

40897

.014 to .016

10

20 @ 1000

N-9Y

.024 to .026

18GG (LC)

 

Oct-68

NOT NA

500

25D4

40916

.014 to .016

8

12 @ 600

N-9Y

.024 to .026

18GG (HC)

 

Oct-68

NOT NA

500

25D4

40897

.014 to .016

10

14 @ 600

N-9Y

.024 to .026

18GH

 

Oct-68

NA

900

25D4

41155

.014 to .016

10

20 @ 1000

N-9Y

.024 to .026

18GJ

 

Oct-69

CA

900

25D4

41155

.014 to .016

10

20 @ 1000

N-9Y

.024 to .026

18GK

 

Aug-70

NA

900

25D4

41339

.014 to .016

10

15 @ 1500

N-9Y

.024 to .026

18V

581-F-H

Aug-71

HOME

750 to 800

25D4

41288

.014 to .016

10

13 @ 600

N-9Y

.024 to .026

18V

581-Y-L

Aug-71

EXPORT

750 to 800

25D4

41290

.014 to .016

10

13 @ 600

N-9Y

.024 to .026

18V

581-Y-H

Aug-71

EXPORT

750 to 800

25D4

41288

.014 to .016

10

13 @ 600

N-9Y

.024 to .026

18V

582-F-H

Aug-71

HOME

750 to 800

25D4

41288

.014 to .016

10

13 @ 600

N-9Y

.024 to .026

18V

582-Y-L

Aug-71

EXPORT

750 to 800

25D4

41290

.014 to .016

10

13 @ 600

N-9Y

.024 to .026

18V

582-Y-H

Aug-71

EXPORT

750 to 800

25D4

41288

.014 to .016

10

13 @ 600

N-9Y

.024 to .026

18V

583-F-H

Aug-71

HOME

750 to 800

25D4

41288

.014 to .016

10

13 @ 600

N-9Y

.024 to .026

18V

583-Y-H

Aug-71

EXPORT

750 to 800

25D4

41288

.014 to .016

10

13 @ 600

N-9Y

.024 to .026

18V

584-Z-L

Aug-71

NA

850

25D4

41370

.014 to .016

10

16 @ 1500

N-9Y

.024 to .026

18V

585-Z-L

Aug-71

NA

850

25D4

41370

.014 to .016

10

16 @ 1500

N-9Y

.024 to .026

18V

672-Z-L

Aug-72

NA

850

25D4

41491

.014 to .016

6

12 @ 1500

N-9Y

.024 to .026

18V

673-Z-L

Aug-72

NA

850

25D4

41491

.014 to .016

6

12 @ 1500

N-9Y

.024 to .026

18V

779-F-H

Nov-73

NOT NA

850

25D4

41491

.014 to .016

6

12 @ 1500

N-9Y

.024 to .026

18V

780-F-H

Nov-73

NOT NA

850

25D4

41491

.014 to .016

6

12 @ 1500

N-9Y

.024 to .026

18V

797-AE-L

Dec-74

NA

850

45D4

41599

n/a

n/a

13 @ 1500

N-9Y

0.035

18V

798-AE-L

Dec-74

NA

850

45D4

41599

n/a

n/a

13 @ 1500

N-9Y

0.035

18V

801-AE-L

Jul-75

USA

850 +/- 100

45DE4

41600

n/a

n/a

10 @ 1500

N-9Y

0.035

18V

802-AE-L

Jul-75

USA

850 +/- 100

45DE4

41600

n/a

n/a

10 @ 1500

N-9Y

0.035

18V

836-Z-L

Sep-74

NA

850

45D4

41599

n/a

n/a

13 @ 1500

N-9Y

0.035

18V

837-Z-L

Sep-74

NA

850

45D4

41599

n/a

n/a

13 @ 1500

N-9Y

0.035

18V

846-F-H

Sep-74

NOT NA

850

25D4

 

.014 to .016

 

 

N-9Y

.024 to .026

18V

847-F-H

Sep-74

NOT NA

850

25D4

 

.014 to .016

 

 

N-9Y

.024 to .026

18V

846-F-H

Jun-76

NOT NA

850

25D4

 

.014 to .016

 

 

N-9Y

.024 to .026

18V

847-F-H

Jun-76

NOT NA

850

25D4

 

.014 to .016

 

 

N-9Y

.024 to .026

18V

883-AE-L

Jun-76

FED

850 +/- 100

45DE4

41693

n/a

n/a

10 @ 1500

N-9Y

0.035

18V

884-AE-L

Jun-76

FED

850 +/- 100

45DE4

41693

n/a

n/a

10 @ 1500

N-9Y

0.035

18V

890-AE-L

Jun-76

CA & JAP

850 +/- 100

45DE4

41695

n/a

n/a

10 @ 1500

N-9Y

0.035

18V

891-AE-L

Jun-76

CA & JAP

850 +/- 100

45DE4

41695

n/a

n/a

10 @ 1500

N-9Y

0.035

18V

892-AE-L

Aug-76

CANADA

850

25D4

 

.014 to .016

 

 

N-9Y

.024 to .026

18V

893-AE-L

Aug-76

CANADA

850

25D4

 

.014 to .016

 

 

N-9Y

.024 to .026

ALL= All markets
NOT NA = All markets but North America (USA and Canada)
NA = 50 States and Canada
USA = 50 States
CA = California only
FED = 49 States
CANADA= Canada only
JAP = Japan
HOME = Home Market
EXPORT = All markets except HOME , NA, & JAP

 

Contents Copyright (C) 1998 - 2017 by O.B. Harding