Ignition Coil Guide for the 1946-1950 Hudson Super Series
Keep your classic Hudson's ignition system reliable with the correct new aftermarket coil.
- Verify you are buying a 6-volt coil for your Hudson's original electrical system.
- A failing coil will cause no-start conditions, stalling, misfiring, and power loss.
- Standard Motor Products (SMP) is a well-regarded aftermarket brand for this application.
- For best results, replace the ignition points and condenser at the same time as the coil.
Is Your Hudson Super Series Ignition Coil Failing?
An ignition coil on a classic car like a post-war Hudson usually doesn't fail suddenly. Instead, its performance degrades over decades of heat and vibration, which can cause the internal windings to break down. If you're experiencing electrical issues, a failing coil is a likely suspect.
Symptoms of a Bad Ignition Coil
- Hard Starting or No-Start: The engine cranks over but struggles to fire up, or won't start at all. This is a classic sign of a weak or dead coil. Owners on Hudson forums often report a "no-spark" condition as the main problem when their car won't run.
- Engine Misfires and Rough Idle: The engine may sputter, shake, or run unevenly. This happens when a cylinder doesn't fire correctly because the spark is inconsistent.
- Backfiring: Loud pops from the exhaust can occur when unburned fuel ignites late in the exhaust system due to a weak or mistimed spark.
- Engine Stalling: The coil may work when cool but fail as the engine heats up, causing the car to stall unexpectedly. After cooling down, it might start again, only to repeat the problem.
Choosing the Right Aftermarket Ignition Coil
For a 1946-1950 Hudson, finding a “new old stock” (NOS) OEM Autolite coil is very difficult and often expensive. The practical and reliable choice is a new aftermarket coil from a reputable brand. These modern coils are readily available and often built to standards that meet or exceed the original 1940s specifications.
Critical: Confirm Your Voltage
All 1946-1950 Hudson Super Series models use a 6-volt electrical system from the factory. You must use a 6-volt ignition coil. Installing a 12-volt coil will produce a very weak spark, while installing a 6-volt coil on a car that has been converted to a 12-volt system will destroy the coil. Always verify your car's system before ordering.
Available Aftermarket Brands
Two common brands you will find for your Hudson are Standard Ignition and Spectra. Both offer compatible external canister-style coils.
- Standard Motor Products (SMP): Standard is a long-standing brand in the aftermarket and is generally considered a reliable choice for ignition components for classic American vehicles. Their Blue Streak line is often viewed as a premium option. For a classic like the Hudson, Standard is a dependable go-to brand. 🎬 Learn more about how Standard Ignition coils are manufactured.
- Spectra Premium: Spectra is another available brand, often at a lower price point. However, some user reviews for other vehicles suggest potential quality control issues compared to more established brands. For a critical component like the ignition coil, investing in a well-regarded brand like Standard is often worth the small price difference.
Estimated Cost for a New Ignition Coil
Replacing the ignition coil is an affordable repair. The main cost is the part itself, as labor is minimal.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Coil (Spectra, Standard Ignition) | $28 - $39 |
| Shop Labor | $60 - $120 |
Frequently Asked Questions (FAQ)
Do I need a coil with a ballast resistor?
No, the original 6-volt system on the 1946-1950 Hudson Super Series does not use an external ballast resistor. You should purchase a standard 6-volt coil that is marked for use without an external resistor.
Is replacing the ignition coil a difficult job?
No, this is a very easy job for a DIY mechanic. It typically involves disconnecting the battery, removing two or three low-voltage wires and the main high-tension wire from the old coil, unbolting the coil from its bracket, and installing the new one in its place. The entire process usually takes less than 30 minutes.
Should I replace any other parts at the same time?
Yes. It is highly recommended to also replace the ignition points and condenser when you replace the coil. These parts work together and wear out over time. Replacing all three components as part of a tune-up ensures the entire ignition system is refreshed for maximum reliability.
Can I convert my Hudson to an electronic ignition?
Yes, electronic ignition conversion kits are available that replace the mechanical points and condenser system. These kits offer improved reliability and reduced maintenance. However, they are a modification from the original design and require you to select a compatible ignition coil, which may differ from the stock replacement.
🎬 Watch this guide to choosing the best electronic ignition kit.Helpful Videos
Technical Specifications
OEM Part Numbers: IG-4098S
Voltage: 6V, Terminal Quantity: 2, Mounting Position: External Canister
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Hudson Super Series Ignition Coil Failing?
- Symptoms of a Bad Ignition Coil
- Choosing the Right Aftermarket Ignition Coil
- Critical: Confirm Your Voltage
- Available Aftermarket Brands
- Estimated Cost for a New Ignition Coil
- Frequently Asked Questions (FAQ)
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