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AccuSpark Ignition systems

MGA , MGB 1962 -1974 Module pack for 25D Distributors

MGA , MGB 1962 -1974 Module pack for 25D Distributors

Regular price £79.95 GBP
Regular price Sale price £79.95 GBP
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SKU:MODULEPACKMGB25D-1

This pack allows you to build an ignition system tailored to your needs, giving you the freedom to choose the coil and the best spark plugs for your car.

It is suitable for vehicles with a negative earth battery, equipped with a 23D4 or 25D4 distributor. These distributors were typically fitted from 1962 to 1974, although many cars have had their original distributor replaced with the later 45D model (a 45D pack is also available).

The 25D and 45D distributors are quite different and easily distinguishable. Please refer to the photos for comparison.

COIL OVERVIEW
All MGA and Chrome bumber MGB models were fitted from new with a 3 Ohn non-ballast coil
 
All Rubber bumber MGB models were fitted from new with a Ballast 1.5 Ohm coil ,these models were fitted wuith a ballast wire in the loom and 95% remain . It is possible to bypass the wire and use an earlier non-ballast coil but this is not recomended. 

 

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AccuSpark Classic Black –
The AccuSpark "Classic" is AccuSpark’s classic oil-filled ignition coil, designed for standard road use in classic cars running points or electronic ignition. Finished in traditional black with the familiar cylindrical body, it delivers reliable spark energy while maintaining an authentic period look. Ideal for owners wanting dependable performance without straying from the factory appearance, it’s a direct replacement for most 12-volt ignition coils.

AccuSpark Sports Red and Blue –
The Sports Coil is an uprated oil-filled coil, easily identified by its bright red casing. Engineered to provide a higher output voltage than standard coils, it’s perfect for spirited driving and mild performance tuning. Suitable for both contact breaker and electronic ignition systems, the ACU105 offers improved combustion efficiency and a stronger spark, particularly beneficial for engines running wider plug gaps or higher compression ratios.

AccuSpark Hardcore Gold –
The AccuSpark Hardcore coil is a high-performance epoxy resin-filled coil designed for demanding conditions. Its solid resin core improves heat dissipation and vibration resistance, making it ideal for motorsport, off-road use, or harsh environments. Delivering a powerful, consistent spark, the Hardcore coil works with a wide range of electronic ignition systems and is built to handle high RPM without performance fade. Its rugged construction and modern internals make it the most durable option in the AccuSpark coil range.

Spark Plug Heat Range Comparison Table

Type Best For Heat Retention Key Benefit
Cold Plug High-performance, high-compression, racing Low Prevents detonation at high temps
Standard Plug Everyday road use Medium Balanced performance & fouling resistance
Hot Plug Cooler-running engines, short trips High Stays cleaner, resists fouling

Spark Plug Type Comparison Table

Feature What It Does Benefit
Triple Ground Electrode 3 spark paths for ignition Consistent firing, longer life
Iridium Fine, hard center electrode Stronger spark, better starts, longer lifespan

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