The Ford Crown Victoria, a staple of police fleets and taxi services, is known for its robust build but often criticized for its braking performance. Upgrading the braking system is a common modification, and using a four-piston caliper from a Mustang S197 (2005-2014) is a popular choice. This upgrade offers significant improvements in stopping power and feel. However, it's not a simple bolt-on affair and requires careful planning and execution. This guide will delve into the specifics, addressing common questions and concerns.
What are the Benefits of an S197 4-Piston Caliper Upgrade?
The primary benefit of swapping to S197 four-piston calipers is a substantial increase in clamping force. The larger pistons and more aggressive pad contact area translate to significantly improved braking performance, especially noticeable during high-speed braking or under heavy load. This upgrade provides better stopping power, reduced brake fade, and a more responsive brake pedal feel. The improved performance can enhance both street driving and track use.
What Components are Needed for the S197 4-Piston Caliper Upgrade?
This isn't a straightforward swap; you'll need more than just the calipers themselves. A successful upgrade requires the following:
- S197 Four-Piston Calipers: These are the core of the upgrade. Ensure they're in good condition and suitable for your application.
- S197 Brake Rotors: The S197 rotors are larger than the Crown Vic's stock rotors and are necessary to accommodate the larger calipers. Their larger size contributes to improved heat dissipation.
- Brake Pads: Select high-quality brake pads compatible with the S197 calipers. The choice of pad compound will influence braking performance and feel.
- Brake Lines: The stock brake lines are likely insufficient for the increased pressure of the larger calipers. Stainless steel braided brake lines are recommended for improved durability and responsiveness.
- Brake Line Adapters (Possibly): Depending on the year and model of your Crown Victoria and the specific S197 calipers you choose, you might need adapters to connect the brake lines to the calipers.
- Mounting Hardware: This might include brackets or other necessary hardware to properly secure the calipers to the spindle. You may need to fabricate or source custom brackets, as this is not a direct fit.
Will the S197 Calipers Fit Directly onto the Crown Vic Spindle?
No, this isn't a direct bolt-on upgrade. The S197 calipers and Crown Vic spindles have different mounting points. You'll likely need to fabricate or purchase custom brackets to allow for proper mounting. This often involves some degree of machining or welding.
What About the Master Cylinder? Do I need to upgrade that?
While not strictly required for all applications, upgrading to a larger master cylinder is often recommended. The increased clamping force from the larger calipers might overload the stock master cylinder, leading to a spongy pedal feel or other issues. A larger master cylinder ensures sufficient hydraulic pressure for optimal braking performance.
What are the Potential Challenges of this Upgrade?
This upgrade is more complex than a simple parts swap and involves some mechanical expertise. Challenges include:
- Bracket Fabrication: Finding or making suitable mounting brackets is crucial.
- Wheel Clearance: The larger rotors might require larger wheels or wheel spacers, potentially impacting wheel fitment.
- Brake Line Routing: Routing the new brake lines might be challenging, requiring careful planning and attention to detail.
- Bleeding the Brakes: Proper bleeding of the brakes is essential after the upgrade to ensure optimal performance.
Is this upgrade suitable for all Crown Victoria models?
While this upgrade is possible on many Crown Victoria models, the specific components and the difficulty of the installation might vary slightly depending on the year and model of your vehicle. Research specific fitting details relevant to your Crown Victoria's year and make. A thorough understanding of your vehicle's braking system is essential.
This upgrade, while offering significant performance benefits, demands mechanical skill and understanding. Improper installation can lead to dangerous braking issues. If you lack the necessary experience, it's highly recommended to consult a professional mechanic. Remember to always prioritize safety when modifying your vehicle's braking system.
