Data Table

The list below identifies a Vehicle, Engine, the manufacturer's recommended cold valve stem to rocker clearance (data for hot gapping, where available, is in parentheses) for both Inlet and Outlet valves in thousands of an inch (Thou or Mil), the corresponding number of Clicks for the Clikadjust, and the required socket size for the Lock-Nut across-flats (A/F).

Check that the tappet screw turns easily on its threads, otherwise the Clikadjust may falsely indicate that rocker-screw contact point.

This list is currently far from comprehensive. If your vehicle data is not here, please refer to "Calibrating the Clikadjust".

Once you have established the correct number of clicks required for your car, please assist others by sending a message to lbcarco@lbcarco.com, advising the data required in each column. This list will be updated with your data.
 

Vehicle

Type

Inlet

Outlet

Lock-nut

 

 

Thou

Clicks

Thou

Clicks

A/F

MGA

1489 cc

17

 11

17

 11

 1/2"

MGA

1588 cc

15

 

15

 

 

MGA

1622 cc

15

 

15

 

 

Midget

'A' 948 cc

12

8

12

8

7/16"

Midget

'A' 1098 cc

12

8

12

8

7/16"

Midget

'A' 1275 cc

12

7

12

7

1/2"

Midget

1493 cc

10

10

 5

 

MGB

'B' 1798 cc 18G, GA, GB

15

8

15

8

1/2"

MGB

'B' 1798 cc from 18GD

15 
(13)

8
(7)

15
(13)

8
(7)

1/2"

MGC

2912 cc

15

 

15

 

 

A-H

3000 Mk I,II, III

12

7

12

7

9/16”

 Triumph

 Spitfire, GT6, TR6

 10

10 

 1/2"


For the Best Value in Gunson Products, contact Little British Car Co