Improve the performance of your classic car with this highly reliable electronic ignition distributor.
The 123MG-4-R-V-POS is designed especially for the MGA and MGB.
This unit is especially designed for positive earth cars.
Brand |
MG |
---|---|
Cylinders |
4 |
Operating voltage |
4-15V |
Wires |
Black: coil '-' ,Blue: battery negative ,Red: ignition key (battery 6V / 12V) |
Model |
Switch |
Rotation direction |
CW & CCW |
Vacuum |
Yes |
RPM range |
500-10.000 RPM |
IE (D-jetronic support) |
No |
Environmental temperature |
-30 – 100 °C |
Cap type |
Straight |
Dwell |
Constant current: fully automatic adaptive dwell |
Positive earth supported |
Yes |
Coil charging time-out |
After 1 second, coil current is turned off |
Spark balancing |
<0.5 degrees |
Maximum advance |
40 degrees crankshaft |
The 123\MG-4-R-V-POS is designed especially for the MGA and MGB.
This unit offers “Positive earth” option. This means the unit can be used on positive earth cars. ( + of the battery connected with the chassis of the car) It is also possible to use this unit on a negative earth car.
All the advance-curves, that were ever specified for these cars, are integrated into this product.
For MGC see 123\GB-6-R-V. The unit offers a maximum total of 16 advance-curves to be selected by the end-user.
Please take a look in the curve table for available advance curves.
MG – 4 – R – V – POS = MG stands for the 123ignition typeÂ
MG – 4 – R – V – POS = 4 stands for the number of cylindersÂ
MG – 4 – R – V – POS = R stands for straight distributor capÂ
MG – 4 – R – V – POS = V stands for vacuum advanceÂ
MG – 4 – R – V – POS = POS stands for positive earthÂ
How to install a 123ignition distributor
Where to buy?
Do you want to know where to buy the 123Ignition in your area? Check out the dealer page!
curve | advance starts [rpm crankshaft] | max. advance [rpm] | [degr. crankshaft] | vac. adv. starts [mmHg] | max. vac. adv. [mmHg] | [degr.] | replaces | remark |
0 | 500 | 2200 | 28 | 100 | 300 | 18 | MG-A DM2/40510 | set static at -10 degrees, HC at -5 degr. |
1 | 500 | 4400 | 24 | 100 | 300 | 16 | 40916 | 18GG (LC),18G,18GA,18GB,18GD |
2 | 500 | 2200 | 20 | 130 | 330 | 20 | 40897,41155 | 18G,18GA,18GB,18GD,18GG(HC),18GF,18GH,18GJ |
3 | 1000 | 4600 | 20 | 100 | 300 | 10 | 41339 | 18GK |
4 | 1000 | 4500 | 20 | 100 | 300 | 10 | 41370 | 18G584Z, 18G585Z |
5 | 1000 | 4300 | 33 | 100 | 300 | 10 | 41491 | 18V672Z, 18V673Z |
6 | 700 | 2200 | 14 | 130 | 330 | 20 | 41288 | 18V581F-18V583F-18V581Y-18V583Y (HC) |
7 | 700 | 4200 | 18 | 100 | 300 | 16 | 41290 | 18V581F-18V583F-18V581Y-18V583Y (LC) |
8 | 700 | 2200 | 19 | 75 | 200 | 14 | 41032 | 18V (HC) |
9 | 1000 | 6000 | 27 | 100 | 300 | 16 | 41234,41391,41692 | 18V892AE, 18V779F, 18V780F, 18V893AE |
A | 1000 | 5800 | 24 | 75 | 550 | 24 | 41610 | 18V846F-18V847F |
B | 1000 | 5000 | 26 | 100 | 300 | 10 | 41599 | 18V797AE, 18V798AE |
C | 1000 | 4400 | 22 | 100 | 300 | 10 | - | intended for ‘stage 2’ engines |
D | 1000 | 4500 | 29 | 100 | 300 | 10 | 41600,41643 | 18V801AE, 18V802AE |
E | 1000 | 4500 | 29 | 100 | 300 | 10 | 41693 | 18V883AE, 18V884AE |
F | 1000 | 4500 | 29 | 100 | 300 | 10 | 41695 | 18V890AE, 18V891AE |