The Chrysler Six, produced between 1924 and 1931, was a trailblazer of its time. Known for introducing innovative engineering, this classic was one of the first vehicles to feature hydraulic brakes and high-compression engines, solidifying Chrysler’s reputation for quality. However, as with any vintage vehicle, the Chrysler Six presents unique mechanical and maintenance challenges that require careful consideration. In this article, we’ll dive deeply into the common problems associated with this classic, provide pointers on what to check when buying, and outline the potential costs of owning this historic automobile.
Common Problems with the 1924-1931 Chrysler Six
1. Engine Overheating
One of the most common issues in the Chrysler Six is engine overheating, a problem typical of many early cars. The Chrysler Six was among the first cars to use a high-compression engine, which offered improved performance but also generated significant heat. Additionally, cooling systems from this period are rudimentary compared to modern standards, consisting of simple radiators and water pumps that often wear over time. Radiator blockages and worn-out pumps can prevent proper coolant circulation, leading to overheating.
Signs and Prevention: Check for signs of rust or buildup in the radiator and make sure the cooling system is flushed regularly. Replacement radiators and water pumps are challenging to find, and radiator rebuilds can be expensive, so preventive maintenance is essential. Owners often install auxiliary electric fans to improve cooling, especially in warmer climates.
2. Brake System Wear and Fade
The Chrysler Six was among the first cars to feature four-wheel hydraulic brakes, a remarkable innovation at the time. However, these early hydraulic systems tend to develop leaks and require frequent adjustments to maintain reliable stopping power. With age, seals within the hydraulic system can degrade, causing brake fade or even failure. Brake drums may also become worn or warped over decades, compromising braking effectiveness.
Signs and Prevention: When driving, take note of any spongy or inconsistent brake feel, as well as any fluid leaks near the wheels or brake lines. Restoring the braking system can be complex and costly due to the scarcity of original parts. Vintage car restorers may be able to replace parts with custom-machined components, but this requires specialized knowledge.
3. Transmission Synchro Issues and Clutch Wear
The Chrysler Six uses a 3-speed manual transmission, which was robust for its time but lacks modern synchronizers. This means shifting between gears requires careful timing and a good clutch technique. As these cars age, the clutch can wear down, making shifting more difficult and causing grinding, especially for drivers unfamiliar with vintage transmissions. Additionally, parts like gears, bearings, and shift linkages may suffer from wear over decades.
Signs and Prevention: Grinding sounds during gear shifts, difficulty getting into gear, or a stiff clutch pedal indicate issues. Check that the clutch engages smoothly without excessive play. Restoring a transmission or replacing clutch components is labor-intensive, so look for signs of recent transmission work when buying.
4. Electrical System Weaknesses
The Chrysler Six’s electrical system was initially a 6-volt setup, which can be insufficient for modern driving demands. Over time, connections may corrode, wiring may degrade, and components like the generator and starter may weaken. Problems like dim headlights, intermittent starting, and slow cranking are not uncommon, especially if the wiring or connections have not been updated.
Signs and Prevention: Flickering lights, weak starts, and slow cranking are indicators of electrical problems. Some owners upgrade the electrical system to 12 volts, which improves starting and lighting but requires modifications to avoid damage to original components. For purists who wish to retain the 6-volt system, regular inspection and maintenance of all electrical connections are essential.
5. Suspension and Steering Wear
The Chrysler Six features a solid front axle and leaf spring suspension, a common design for early vehicles but one that doesn’t provide the smoothest ride. Over time, components like bushings, springs, and shock absorbers can wear out, leading to increased play in the steering and a rougher ride. The car’s steering box can also develop excessive play, making the steering less precise and harder to control at higher speeds.
Signs and Prevention: When inspecting a Chrysler Six, look for uneven tire wear, loose or rattling suspension parts, and excessive play in the steering wheel. Restoration of the suspension and steering requires custom-made parts and precise alignment to maintain the car’s drivability.
6. Fuel System Issues and Carburetor Wear
The Chrysler Six uses an early carburetor setup that tends to suffer from clogging and inefficiency as it ages. Additionally, the materials used in early carburetors can degrade over time, affecting fuel delivery and causing inconsistent idling or stalling. The fuel pump, often vacuum-operated in early models, may also fail, making it difficult to maintain proper fuel pressure.
Signs and Prevention: Stalling, rough idling, and difficulty starting after the car has been sitting for a while can indicate fuel system issues. Many owners opt to rebuild or replace the carburetor and fuel pump with modern components that mimic the originals but provide improved reliability.
7. Rust and Body Integrity
Like many cars from this era, the Chrysler Six is prone to rust, particularly in the undercarriage, wheel wells, and floor pans. Since rust can compromise structural integrity, it’s essential to inspect for signs of corrosion, especially if the car has been stored in humid or wet conditions over the years.
Signs and Prevention: Look for any bubbling in the paint, soft spots on the floor, or visible rust on the frame and undercarriage. Regular rust prevention treatments are crucial, especially if you live in a humid climate. If rust is already present, a full restoration can be extensive and costly.
Buying Tips: What to Look for in a 1924-1931 Chrysler Six
Documentation and Provenance: Look for a complete history of previous repairs, restorations, and parts replacements. Knowing the car’s history can give insight into potential problem areas and whether any components were updated to improve reliability.
Mechanical Soundness: Since replacement parts are often difficult to source, ensure the engine, transmission, and brakes are in good working order. Be prepared to have the car inspected by a mechanic familiar with vintage cars.
Rust Inspection: The biggest enemy of any classic car, especially one nearing a century old, is rust. Pay special attention to the chassis and body for signs of previous rust repairs, as poorly treated rust can return and worsen over time.
Originality and Modifications: Decide whether you prefer an all-original model or one that has been modified for improved reliability (e.g., upgraded electrical system, modern carburetor). Some modifications may make ownership easier but can reduce collectability and resale value.
Cost of Ownership: Is the Chrysler Six Expensive to Own?
Maintenance and Repairs
Maintenance costs for a Chrysler Six can be high due to the rarity of parts. Routine tasks like oil changes and fluid replacements are affordable, but mechanical work on the engine, brakes, or transmission may require specialist attention. Custom fabrications for obsolete parts can also be costly.
Fuel Costs
While fuel efficiency isn’t a strong point, the Chrysler Six is relatively frugal compared to other classics. However, because carburetors can be finicky and require careful tuning, frequent adjustments may be needed to maintain optimal fuel economy.
Insurance and Storage
Insurance costs depend on the car’s usage. Classic car insurance, if available, is often more affordable than standard insurance but may come with mileage limitations. Additionally, indoor storage is essential to protect the vehicle from the elements, so budget for secure storage space.
Resale and Appreciation
The Chrysler Six holds a respectable place in classic car circles, and well-maintained examples can appreciate in value. Maintaining originality is key for higher resale value, though reliability modifications may make the car more usable for everyday driving.
Conclusion
The 1924-1931 Chrysler Six is a remarkable classic that offers a glimpse into early automotive innovation and design. However, owning and maintaining one of these cars requires careful attention to its common issues, particularly those related to its early engine, transmission, and braking technology. By understanding these challenges, prospective buyers can make informed decisions and enjoy the experience of preserving this piece of automotive history.