Back to Honda
Official AutoWiki Guide

Honda S600

Find Me One
```html

The Honda S600: A Comprehensive Guide

The Honda S600 is a small, front mid-engine, rear-wheel-drive roadster manufactured by Honda from 1964 to 1966. A coupe version was also produced. It was Honda's second production automobile, following the T360 mini pick-up truck, and was notable for its high-revving engine and sophisticated mechanicals. It represented a crucial step in Honda's transition from motorcycle manufacturer to a serious automotive contender, showcasing engineering prowess and a willingness to challenge conventional designs. The S600 falls into the category of a sports car, albeit a very small and lightweight one, designed for fun and nimble handling rather than outright speed.

Generations

  • First Generation (1964-1966)
    • Roadster (1964-1966): Open-top two-seater. Early models featured chain drive and independent rear suspension. Later models transitioned to a more conventional live axle setup.
    • CoupĂ© (1965-1966): Fixed-roof two-seater. More refined and practical than the roadster, offering better weather protection. Produced in significantly smaller numbers than the roadster.

Reliability & Common Issues

The Honda S600, while a marvel of engineering for its time, presents some reliability challenges for modern owners. Its complexity and age mean careful inspection and regular maintenance are crucial.

Engine

The DOHC inline-four engine is a high-revving masterpiece, but also delicate. It requires meticulous maintenance and can be prone to issues related to:

  • Valve Train: The high RPM nature puts significant stress on the valve train. Valve adjustments are crucial and require specialized knowledge and tools. Missed adjustments can lead to poor performance and eventual engine damage. Pay close attention to valve clearances during inspection and maintenance.
  • Carburetion: Four Keihin carburetors are complex and require synchronization and cleaning. Finding specialists familiar with these carburetors can be difficult. Symptoms of carburetor problems include rough idling, poor acceleration, and fuel leaks.
  • Oil System: The oil system needs to be kept in top condition. Regular oil changes with the correct type of oil are essential. Low oil pressure can quickly lead to engine damage. Check for oil leaks, especially around the valve cover and oil pan.
  • Overheating: The small engine bay and high-revving nature can make the S600 prone to overheating, especially in hotter climates. Ensure the cooling system is functioning correctly, including the radiator, thermostat, and water pump.

Drivetrain

The drivetrain presents different challenges depending on the model year.

  • Chain Drive (Early Models): The chain drive, while innovative, requires frequent lubrication and maintenance. Worn chains can lead to significant performance loss and potential damage. Replacing chains and sprockets can be costly. Conversion to a more conventional driveshaft setup is sometimes performed, though it detracts from originality.
  • Live Axle (Later Models): While simpler, the live axle can suffer from worn bearings and differential issues. Check for excessive noise or vibrations from the rear axle.

Electrical System

The electrical system is generally reliable for its age, but can suffer from:

  • Wiring: Brittle wiring can lead to shorts and malfunctions. Careful inspection of the wiring harness is essential. Rewiring may be necessary.
  • Charging System: The generator or alternator can fail with age. Ensure the charging system is functioning correctly to avoid a dead battery.
  • Lighting: Dim or non-functioning lights are common due to corroded connections.

Body and Chassis

Rust is a significant concern on the S600.

  • Rust: Check for rust in common areas such as the floors, rocker panels, fenders, and around the headlights. Rust repair can be expensive and time-consuming.
  • Chrome: Original chrome trim can be expensive to restore or replace.

Driving Experience

Driving the Honda S600 is a unique and engaging experience. It is not about outright speed, but about the connection with the machine and the joy of driving.

Pros:

  • High-Revving Engine: The engine's willingness to rev is addictive. It thrives at high RPMs and provides a thrilling soundtrack.
  • Nimble Handling: The S600 is lightweight and responsive, making it a joy to drive on winding roads.
  • Unique and Engaging: The car demands driver involvement and provides a level of connection rarely found in modern vehicles.
  • Classic Style: The S600 is a beautiful and iconic car that turns heads wherever it goes.

Cons:

  • Limited Power: The engine's small displacement means limited power, especially at lower RPMs.
  • Ride Quality: The suspension is firm and can be uncomfortable on rough roads.
  • Reliability: As discussed, reliability can be a concern.
  • Parts Availability: Parts can be difficult to find and expensive.
  • Small Size: The S600 is small and can be cramped for taller drivers.

Buying Advice

Buying a Honda S600 requires careful consideration and research. It's essential to know what to look for and what to avoid.

What to Look For:

  • Rust-Free Example: Prioritize finding a car with minimal rust. Rust repair can be a major expense.
  • Well-Maintained Engine: Look for evidence of regular maintenance, especially valve adjustments and oil changes.
  • Original Parts: While some modifications are acceptable, preserving originality is important for value and authenticity.
  • Complete Documentation: Service records and ownership history can provide valuable insight into the car's condition.
  • Chain drive (early model) OR Live axle (late model) In Correct Year: Be sure it has the correct rear suspension for the car's year.

What to Avoid:

  • Significant Rust: Avoid cars with extensive rust, as repairs can be costly and challenging.
  • Heavily Modified Examples: Unless the modifications are well-documented and professionally done, avoid heavily modified cars.
  • Cars with Poorly Running Engines: An engine that smokes, knocks, or runs poorly is a red flag.
  • Missing Parts: Missing parts can be difficult and expensive to replace.
  • "Barn Finds" in Disrepair: While tempting, a neglected car in disrepair can be a money pit.

Year Recommendations:

While both roadster and coupe versions are desirable, consider these points:

  • The roadster is significantly more common and generally easier to find parts for.
  • The coupe provides a slightly more refined driving experience but commands a premium price.
  • Later models with the live axle are generally considered more robust and easier to maintain than the early chain-drive versions. However, the chain-drive models offer a unique driving experience.

Ultimately, buying a Honda S600 is an investment in a piece of automotive history. With careful research and due diligence, you can find a rewarding and enjoyable classic car.

```