Yes, you can absolutely install power steering in an old car. It's a popular and very feasible upgrade that dramatically improves drivability, especially at low speeds and when parking. The project involves swapping out the original manual steering box or gear for a power-assisted unit, along with adding a pump, hoses, and a fluid reservoir. There are two main paths: retrofitting a hydraulic system from a donor vehicle or installing a modern electric power steering (EPS) unit. The complexity and cost depend heavily on your car's specific make, model, and the system you choose.
The primary choice is between hydraulic and electric systems. Hydraulic conversions often involve finding a compatible power steering box from a later model of your car or a similar vehicle. This can be a cost-effective solution if donor parts are readily available, but it requires mounting a belt-driven pump and running hydraulic lines. Electric power steering (EPS) kits are a more modern solution. These systems, like those from companies like EPAS Performance or Unisteer, use an electric motor to provide assistance, eliminating the need for a pump, belts, or hydraulic fluid. They are generally easier to install and more tunable.
| Consideration | Hydraulic System | Electric Power Steering (EPS) |
|---|
| Relative Cost | Often lower if using salvage yard parts | Typically higher due to new, specialized kit |
| Installation Complexity | Moderate to High (requires pump mounting, plumbing) | Moderate (electrical integration is key) |
| Maintenance | Requires periodic fluid changes; potential for leaks | Minimal; no fluids or belts to maintain |
| Tunability | Fixed level of assistance | Often adjustable assistance levels via a controller |
| Engine Load | Uses engine horsepower to drive the pump | Negligible drain on the engine |
| Space Requirements | Requires space for pump and reservoir | More compact, especially column-mounted units |
Beyond the system type, key factors include compatibility with your existing steering linkage and whether your steering column can accommodate an EPS unit. For valuable classics, purists may advise against modification, but for a car driven regularly, the comfort and safety benefits are significant. Unless you're highly experienced, consulting a specialist shop that performs these conversions is highly recommended to ensure a safe and proper installation.
