Behind the scenes at Classic Performance Products!

ONE OF THE MOST EXCITING things about the last 20 years in this industry is watching all the growth that has taken place with builders and manufacturers alike. Many of the top parts manufacturers started as simple backyard fabricators who found an open market and jumped in the deep end with both feet. They have perfected their product lines and assembled a group of professionals to create a winning combination. After years of learning, trying, failing and persevering, the best of the best rose to the top and now enjoy a career in the field they love.

In this story, we focus on Jim Ries and his impressive company known as Classic Performance Products, a.k.a. CPP. Jim opened his business in December 1991 and has not looked back since. He grew up watching his dad, Jack “JR” Ries, run a successful classic truck parts business in the ’60s and ’70s, but he wasn’t quite ready to open shop until he had a few real-world experiences. Ries got in on the action when the monster truck craze hit Southern California, and he found himself building and racing several of these massive vehicles for Horsepower Promotions. This experience gave him valuable knowledge on the inner workings of steering, brakes and suspension truck parts.

The transition from monster trucks to classic trucks happened with the help of Seth Doulton at Golden State Pickup Parts. After working for Seth for many years and feeling unsatisfied simply selling parts, Ries set out to redefine the classic truck steering, brakes and suspension industry with better quality parts at a much more budget friendly cost. Engine and transmission crossmembers kicked off Jim’s early success as his first manufactured products before CPP went on to design a brake booster kits, full blown suspension kits and bolt-on disc brake kits for classic C10 trucks. Are you ready to go behind the scenes of this impressive American-built company? Let’s go!

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FREQUENTLY ASKED QUESTIONS

Why might vintage car owners consider upgrading to a disc brake system?

Why Vintage Car Owners Should Consider Upgrading to a Disc Brake System

Upgrading to a disc brake system can significantly enhance the driving experience for vintage car owners. Here are several compelling reasons why this upgrade is beneficial:

1. Improved Stopping Power
   Disc brakes provide superior stopping power compared to traditional drum brakes. This ensures better safety, especially in emergency situations. With better heat dissipation, disc brakes reduce the risk of brake fade, maintaining consistent performance.
2. Enhanced Durability and Maintenance
   Disc brakes generally have a longer lifespan and require less maintenance. Replacing pads is simpler and less frequent, thanks to their resilience and efficiency.
3. More Consistent Braking
   Disc brakes perform better in wet conditions. The open design allows water to escape more easily, preventing the decrease in braking efficiency that drum brakes can suffer from in similar scenarios.
4. Greater Compatibility with Modern Parts
   Many aftermarket parts and upgrades are designed to work with disc brake systems. This ensures that future upgrades or replacements are compatible, making maintenance and further enhancements easier.
5. Installation Options and Support
   Numerous vendors provide comprehensive kits and support for installing disc brake systems on vintage vehicles. These kits often come with all the necessary components and detailed instructions, simplifying the upgrade process even for enthusiasts with limited mechanical experience.

Conclusion

For vintage car owners, upgrading to a disc brake system is a practical and valuable investment. It offers increased safety, reduced maintenance, and better overall performance, enhancing the driving experience while preserving the classic charm of their vehicles.

 

What are the benefits of disc brakes over drum brakes in classic cars?

The Benefits of Disc Brakes Over Drum Brakes in Classic Cars

When it comes to upgrading classic cars, one of the most impactful improvements can be transitioning from drum brakes to disc brakes. Here’s why disc brakes are often the superior choice:

1. Reduced Brake Fade
   Drum brakes are notorious for brake fade, especially during high-speed or heavy-load braking. This is largely due to the fact that drums heat up quickly, compromising performance. Disc brakes, on the other hand, manage heat far more effectively, maintaining consistent braking power even under strenuous conditions.
2. Enhanced Performance in Wet Conditions
   Drum brakes can suffer from water fade when they become saturated with liquids, such as water. This dramatically reduces braking efficiency. Disc brakes are less susceptible to this issue because their open design allows for quicker drying and better overall performance in wet conditions.
3. Improved Durability and Longevity
   Disc brakes generally last longer and are less prone to wear compared to drum brakes. Their design helps dissipate heat more efficiently, leading to less wear on the brake pads and rotors over time.
4. Easier Maintenance
   Maintaining disc brakes is usually simpler than taking care of drum brakes. The parts are more accessible, making routine inspections, pad changes, and other maintenance tasks quicker and less labor-intensive.
5. Better Stopping Power
   Disc brakes provide superior stopping power. The design allows for more even and effective pressure application, which translates to quicker and more controlled stops. This can be a significant advantage not only for safety but also for the overall driving experience.

In summary, upgrading from drum brakes to disc brakes in classic cars offers enhanced performance, better durability, and easier maintenance. The superior stopping power and reduced susceptibility to brake and water fade make disc brakes a worthwhile investment for any classic car enthusiast.

Key Takeaways

• Reduced Brake Fade: Maintains performance under high-load, high-speed conditions.
• Enhanced Wet Performance: Superior handling in wet conditions.
• Improved Durability: Longer-lasting with better heat management.
• Easier Maintenance: Simple upkeep and accessibility.
• Better Stopping Power: More effective and controlled braking.

Upgrading to disc brakes can truly transform your classic car, providing a safer and more enjoyable driving experience.

 

What are the braking inadequacies of vintage cars compared to modern vehicles?

Braking Inadequacies of Vintage Cars Compared to Modern Vehicles

Modern cars typically excel in acceleration, cornering, and braking, leaving vintage cars at a disadvantage, especially in braking performance. Classic vehicles often struggle with efficiency and reliability when it comes to stopping power, a critical issue in today’s congested traffic.

Drum Brakes vs. Disc Brakes

Older cars, especially from the 1960s, often come with power-assisted, four-wheel drum brakes. While these were adequate at the time they were designed, they are significantly less effective than the advanced disc braking systems found in contemporary cars. Disc brakes offer better heat dissipation and more consistent performance, particularly under repeated use.

Installation and Adjustment Issues

Another common problem lies in the precise installation and adjustment of drum brakes. Even when properly installed, slight variations in drum size can lead to uneven braking forces. For instance, if one front drum has a larger circumference than the other, the vehicle can pull to one side during braking. Although drivers can anticipate this pull, it remains an undesirable and unsafe characteristic.

Deterioration Over Time

The materials used in older braking systems may also degrade over time, further diminishing their effectiveness. Modern braking systems utilize better materials and more sophisticated designs, reducing wear and tear and providing more reliable stopping power.

Key Points:

• Power and Design: Contemporary vehicles feature advanced disc brakes, which are superior to the drum brakes found in older cars.
• Installation Sensitivity: Even small disparities in drum size can lead to inconsistent braking.
• Material Deterioration: Older materials wear out faster, reducing braking efficiency.

In summary, the braking systems of vintage cars are often insufficient when compared to the more advanced and reliable braking technologies employed in modern vehicles.

 

How do you test the effectiveness of a new brake system on a vintage vehicle?

How to Test the Effectiveness of a New Brake System on a Vintage Vehicle

Testing the effectiveness of a new brake system on a vintage vehicle requires a systematic approach to ensure safety and optimal performance. Here’s a step-by-step guide:

1. Initial Brake Bleeding

Begin by bleeding the brakes at each corner multiple times. This process removes air bubbles within the brake lines, ensuring a firm brake pedal feel. It’s crucial to achieve a consistently firm pedal before proceeding.

2. Wheel Installation and Engine Start

Once the brakes are bled, install the wheels back onto the vehicle. Start the engine to activate the vacuum assist, which can affect pedal feel. It’s normal for the brake pedal to feel slightly soft at the top when the engine is running. However, it should become firmer with increased pressure.

3. Preliminary Road Test

Conduct a brief, low-speed road test to evaluate the brakes’ initial performance. During this phase, focus on ensuring the vehicle stops smoothly and predictably. Avoid high speeds or sudden braking as the brake pads may still be bedding in.

4. Suspension Alignment (Optional)

If you have adjusted the suspension, perform an alignment before a thorough brake test. Proper alignment ensures even braking and optimal handling.

5. Comprehensive Brake Test

After the initial shakedown, perform a more thorough brake test. Gradually increase speed and perform moderate to hard braking maneuvers. Listen for any unusual noises, feel for vibrations, and note any deviations in stopping distance or vehicle control.

6. Post-Test Inspection

After testing, inspect all components for signs of wear, leaks, or other issues. Pay special attention to brake fluid levels and brake pad wear.

By following these steps, you can confidently assess the effectiveness of a new brake system on your vintage vehicle, ensuring both safety and reliability.

 

What components are included in a complete front brake kit for classic cars?

When upgrading the braking performance of classic cars, a comprehensive front brake kit can make a world of difference. These kits are engineered to include all the vital components necessary to convert or enhance your vehicle’s braking system. Here’s what you can typically expect:

1. Spindles:
   • These are crucial for attaching the wheel and brake components to the suspension system.
2. Brackets:
   • Essential for mounting various brake components securely.
3. Dust Shields:
   • Protect the braking system from dirt and debris, ensuring longevity and efficiency.
4. Calipers:
   • These clamp down on the rotors to create the friction needed to stop the car.
5. Rotors:
   • The disc-shaped component that the calipers press against, converting kinetic energy into thermal energy.
6. Bearings and Seals:
   • Ensure the smooth rotation of the wheels and keep contaminants out of the bearing assembly.
7. Hoses:
   • Hydraulic lines that carry brake fluid from the master cylinder to the brake calipers.
8. Power Booster:
   • Assists in amplifying the force from the brake pedal, making it easier to stop the vehicle.
9. Master Cylinder:
   • Acts as the heart of the hydraulic brake system, distributing brake fluid to the calipers.
10. Combination Valve:
    • Regulates brake pressure to ensure balanced braking between front and rear wheels.
11. Mounting Hardware:
    • Includes all the bolts, nuts, and miscellaneous components needed for installation.

For certain classic models, such as the 1963-1974 A-body vehicles, additional parts may be included:

• Lower and Upper Ball Joints
• Upper Control Arms

These components work in unison to ensure optimal braking performance and safety for classic cars.

 

How can classic car owners achieve a factory-like fit and appearance with modern brake upgrades?

Classic car enthusiasts often seek to upgrade their braking systems while maintaining the original appearance of their vehicles. This task can be intricate, but following a few detailed steps can help ensure a seamless integration of modern brake technology into vintage automobiles.

1. Remove Necessary Components:To begin, carefully extract any pins or clips that secure the original brake components. This might involve removing cotter pins that hold various parts together. Ensure you have a clean workspace to avoid losing these small but crucial pieces.
2. Swap Lever Arms:Next, remove the cross pin that connects the original lever arm to the brake booster. Slide this cross pin out from the modern lever arm and insert it into the original lever arm. Doing so will help maintain the authentic look of your vintage car while upgrading the brake system behind the scenes.
3. Reinstall Updated Hardware:After swapping the lever arms, reattach the cross pin and secure it with new cotter pins. These new cotter pins ensure that everything stays firmly in place, providing durability and reliability.
4. Seal and Finalize:Guide the rubber grommet and firewall gasket onto the reattached factory lever arm. These seals are essential for achieving that factory-like appearance and ensuring the components are secure and aligned correctly.

By meticulously following these steps, classic car owners can enjoy the safety and performance benefits of modern brake systems without compromising the vintage aesthetics they cherish.

 

What are the steps to remove and replace drum brakes with disc brakes on a vintage car?

To remove and replace drum brakes with disc brakes on a vintage car, follow these steps:

1. Remove the Power Booster and Master Cylinder

1. Disconnect Brake Pedal Bolt: Start by disconnecting the brake pedal bolt that attaches to both the brake pedal and the lever arm extending to the power booster.
2. Remove Nuts from Firewall: Next, remove the nuts securing the power booster to the firewall.
3. Extract Booster and Cylinder: Carefully pull the booster and master cylinder away from the firewall until the lever arm is clear.

2. Fabricate New Brake Lines

1. Purchase Brake Line Material: Acquire additional brake (hard) lines to fabricate new lines from the combination valve to the factory pressure differential switch.
2. Replace Old Brake Lines: Ensure you have all necessary fittings to avoid reuse of potentially fragile old brake lines.

3. Remove the Drum Assembly

1. Detach from Lower Ball Joint: Pull the drum assembly away from the lower ball joint.
2. Remove Old Ball Joint Nut: Once the drum is out of the way, remove the lower ball joint nut and discard the old ball joint.
3. Install New Ball Joint: Install a new lower ball joint specifically designed for disc brakes and torque it to the factory lower control arm.

4. Install New Components

1. Prepare Ball Joint: Thread the grease fitting into the new ball joint before installation.
2. Mount Sliding Caliper: Install the sliding caliper complete with brake pads onto the caliper bracket. Ensure the machined surfaces are lubricated to facilitate free movement and prevent rust.
3. Secure Retainers: Install the top sliding caliper retainer and prepare to install the lower retainer.

5. Fit New Brake Hose

1. Acquire Compatible Hose: Use a brake hose that fits the vintage car without requiring modifications, such as a hose designed for similar models from the same era.
2. Bend Hard Line Carefully: If using the original brake (hard) line, carefully bend it to fit the new brake hose. Alternatively, use a compatible hose and fittings to avoid damaging the old line.

6. Final Assembly and Alignment

1. Attach Brake Pedal Bolt: Reinstall the brake pedal bolt through the lever arm and brake pedal.
2. Bleed the Brakes: Begin with the longest brake line and work to the shortest, bleeding each corner of the car several times until the brake pedal feels firm.
3. Test Drive: After alignment, take the car for a test drive. Ensure the car rides smoothly and the brakes offer improved stopping power.

By meticulously following these steps, you can successfully upgrade from drum brakes to disc brakes on your vintage car, ensuring better performance and safety.

 

What are the differences between the original and new master cylinder and power booster assemblies?

Differences Between the Original and New Master Cylinder and Power Booster Assemblies

When comparing the original factory booster/master cylinder assembly to the new upgrade from Classic Performance Products (CPP), several distinctions become apparent.

Material Composition

• Original Assembly: Constructed from heavy cast iron.
• New Assembly: Made from lightweight aluminum, which includes a plastic reservoir.

Additional Components

• Original Assembly: Lacks an integrated combination valve.
• New Assembly: Equipped with a combination valve located below the master cylinder, enhancing its functionality and integration.

These differences not only highlight improvements in material technology but also underline the added features and benefits of the new assembly components.

 

What steps are involved in verifying and preparing parts for a brake upgrade?

Steps to Verify and Prepare Parts for a Brake Upgrade

1. Unpacking and Inspection

• Receiving Parts: Start by unpacking all delivered items. The brake upgrade kit might arrive in multiple boxes and tubes.
• Checking for Damage: Inspect each component closely to ensure there are no damages during shipping. Verify that every part is in working condition.

2. Initial Assembly

• Calipers and Rotors: Ensure that the calipers come with pads already fitted and that the rotors and spindles are pre-assembled. This readiness will streamline the installation process.

3. Additional Components

• Purchase Supportive Kits: Invest in a vacuum hose kit and a straight brake line kit. These kits are essential for a seamless and effective disc brake installation.

4. Verification Before Installation

• Height Measurements: Perform several ride-height checks using a tape measure. This step will help you confirm the proper setup of the vehicle.
• Caster/Camber Measurements: Use a bubble gauge to take caster and camber readings. Accurate measurements ensure the alignment is within optimal ranges before beginning work.

5. Setting Up for Installation

• Prepare the Vehicle: Move the vehicle to a hoist. This elevation will make the removal of existing front drum brakes and the installation of new components much easier and safer.

By following these steps, you can systematically verify and prepare all necessary parts, ensuring a smooth and efficient brake upgrade process.

 

What modifications were made to ensure clearance between brake components and other engine parts?

Modifications for Ensuring Clearance Between Brake Components and Engine Parts

To ensure proper clearance between the brake components and other engine parts, several modifications were made:

1. Removal of Caliper and Rotor: First, the caliper and rotor were carefully removed. This step was crucial to gaining access to the spindle bolt holes.
2. Insertion and Tightening of Bolts: Bolts were inserted through the spindle holes and into the lower control arm. These bolts were secured with nuts and torqued to specification, ensuring a stable connection.
3. Pre-Packed Bearings: Bearings that were pre-packed before delivery were reinstalled, simplifying the process. The rotor and bearings were then placed back onto the spindle.
4. Spindle Nut Adjustment: The spindle nut was initially preloaded, then backed off, and re-torqued to eliminate any excess play in the bearing. This precise adjustment helps in maintaining the optimal performance of the brake components.
5. Addition of Cotter Pin and Dust Cap: Finally, a cotter pin was installed to secure the spindle nut, and a dust cap was tapped into place to protect the assembly from debris and ensure longevity.

These adjustments were meticulously performed to enhance clearance, boost performance, and ensure the durability of the brake components in relation to the surrounding engine parts.

 

What was the result of the brake upgrade on the 1967 Dart GT in terms of braking performance and vehicle handling?

Brake Upgrade Results on the 1967 Dart GT

Upgrading the brakes on the 1967 Dart GT significantly improved both braking performance and vehicle handling. After several high-speed brake tests, the upgraded system consistently achieved shorter stopping distances compared to the original 10-inch drum brakes. This enhancement ensured that the vehicle came to a halt more quickly and safely.

Equally important, the modifications to the braking system improved handling. The Dart maintained a straight line during abrupt braking maneuvers, offering greater stability and control. This upgrade not only boosted overall safety but also enhanced driving confidence, especially in emergency situations.

 

How do you remove the old master cylinder and power booster from a vintage car?

How to Remove the Old Master Cylinder and Power Booster from a Vintage Car

Removing the master cylinder and power booster from a vintage car might seem daunting, but with the right approach, it becomes manageable. Follow these steps to do it effectively:

1. Disconnect the Brake Pedal BoltFirst, locate the bolt that connects the brake pedal to the lever arm extending to the power booster. Carefully disconnect this bolt and set it aside for reassembly later.
2. Evacuate Brake FluidUse a turkey baster to remove brake fluid from the master cylinder reservoir. This step is crucial to prevent spills that could damage the paintwork. For added protection, place a piece of cardboard underneath the master cylinder to catch any drips.
3. Remove Brake Lines from the Master CylinderNext, disconnect the brake lines attached to the master cylinder. Be prepared for some residual fluid to escape and have a container or absorbent material at hand.
4. Detach Nuts Holding the Power BoosterIdentify and remove the nuts securing the power booster to the firewall. This will enable you to pull the booster and master cylinder assembly towards the front of the vehicle.
5. Extract the AssemblyOnce the lever arm clears the firewall, carefully pull the entire assembly out from the engine bay. Ensure you have a clear workspace to set down the components for inspection or replacement.

By following these steps, you will successfully remove the old master cylinder and power booster, paving the way for any necessary repairs or upgrades.

 

How did the brake and suspension upgrades impact the overall driving experience of the 1967 Dart GT?

The installation of modern front disc brakes and new suspension components transformed the driving experience of the 1967 Dart GT significantly. These upgrades have made the car not only more enjoyable to drive but also much safer and more reliable.

Improved Handling and Comfort

With the new suspension parts in place, the Dart handles more smoothly and feels more stable on the road. The enhanced suspension system absorbs bumps better, offering a more comfortable ride, especially on uneven surfaces. This means you can enjoy your classic ride without compromising on modern-day comfort.

Enhanced Braking Performance

The addition of front disc brakes has drastically improved the car’s braking performance. Unlike the original drum brakes, these disc brakes provide quicker and more predictable stopping power. This upgrade is particularly noticeable in traffic, where immediate and reliable braking is crucial. The Dart now stops with the kind of confidence you’d expect from a contemporary vehicle, reducing the stress and uncertainty of driving a vintage car in modern traffic conditions.

Installation Overview

Keep in mind that the installation process isn’t a quick job. It may eat up one or two weekends depending on your mechanical skills. Some custom fabrication of brake lines is required, which can be time-consuming. However, the end results are well worth the effort.

Overall Confidence Boost

Thanks to these upgrades, driving the 1967 Dart GT feels more secure and predictable. Whether you’re navigating busy traffic or cruising down a highway, the improvements in handling and braking make the Dart a much more enjoyable and confidence-inspiring vehicle to drive.

By upgrading the brakes and suspension, you not only enhance performance and safety but also breathe new life into this classic car, making every drive an exhilarating experience.

 

What challenges might be encountered when fitting new brake hoses and lines?

Installing new brake hoses and lines can present several challenges:

1. Compatibility Issues:
   • The brake hose that comes with the kit may not always fit seamlessly with existing brake lines, especially on older vehicles. This often requires modifications to the original brake lines.
2. Finding Suitable Replacements:
   • You may need to find alternative brake hoses that are compatible with both the hard line and the caliper. For example, hoses designed for different vehicle models might be necessary to ensure proper fit and routing.
3. Routing and Interference:
   • Even when a compatible hose is found, ensuring the routing is free from interference can be tricky. Incorrect routing can lead to premature wear or potential failure of the brake hose over time.
4. Adjusting Ride Height:
   • After installing new brake hoses, other components such as the torsion bar adjuster may need tightening to maintain the vehicle’s ride height. This adds another layer of complexity to the installation process.
5. Mirror Procedures:
   • The process must be repeated for both sides of the vehicle, necessitating meticulous attention to detail to ensure that both sides are correctly assembled and functioning properly.

By anticipating these potential challenges, you can better prepare and equip yourself to handle them during the installation process.

 

What is the function of a combination valve in a brake system?

A combination valve in a brake system plays multiple crucial roles to ensure safe and efficient braking. It integrates several components including a pressure differential switch, proportioning valve, metering valve, and sometimes a residual pressure check valve.

Breakdown of Components and Their Functions:

1. Pressure Differential Switch:
   • This component monitors the brake fluid pressure in each brake circuit of the tandem system.
2. Proportioning Valve:
   • Located at one end of the combination valve, it limits the increase of brake fluid pressure to the rear drums during high-pressure brake applications (like panic stops). This feature helps prevent rear wheel lockup by adjusting the pressure once a preset threshold, known as the “split point,” is reached.
3. Metering Valve:
   • Positioned at the opposite end, it delays the application of the front disc brakes until the rear drum brakes are engaged. This reduces the likelihood of the front wheels locking up when braking at low speeds.
4. Residual Pressure Check Valve:
   • Found at the rear brake line port, it maintains a constant 10 psi of brake fluid pressure in the rear brake lines. This ensures that the brakes engage quickly and helps prevent air from entering the brake lines.

By combining these elements in one unit, the combination valve ensures balanced and efficient brake performance. It optimizes pressure distribution between front and rear brakes and ensures quicker, more reliable braking response, especially in critical situations.

 

What are some tips for fabricating and bending brake lines for a proper fit?

Tips for Fabricating and Bending Brake Lines for a Proper Fit

Creating properly shaped brake lines is crucial for vehicle safety. Here are some essential tips to ensure accuracy and prevent leaks:

• Gather the Right Tools: You’ll need a tubing cutter, a variety of tubing benders, and a flaring tool. Investing in quality tools makes a substantial difference in the outcome.
• Practice Makes Perfect: Shaping brake lines requires patience and precision. If you’re new to this, practice on spare pieces of tubing before working on the actual brake lines. This will help you get a feel for the tools and the material.
• Seek Expertise: If you struggle to create perfectly bent, leak-free lines, don’t hesitate to seek help from someone more experienced. Automotive forums and local mechanic shops can be excellent resources.
• Measure Twice, Cut Once: Accurate measurements are critical. Double-check your lengths before cutting to avoid wasting materials and time.
• Smooth Edges: After cutting, make sure to de-burr and smooth the edges of the tubing. Rough edges can lead to leaks and weak points in the line.
• Test Fit: Before final installation, test fit the brake lines to ensure they align correctly with the brake components. This will help identify any adjustments that need to be made in advance.

Following these tips can greatly improve your results when fabricating and bending brake lines, ensuring a safe and efficient braking system.

 

How do you ensure proper alignment and ride height after a brake upgrade?

Maintaining proper alignment and ride height after a brake upgrade is critical to achieving optimal performance and safety. Here’s a detailed guide on how to do it:

1. Setting Caster and Camber Angles

• Caster Angle: Adjust the caster to ensure the vehicle’s steering stability. Aim for a slight difference between the left and right sides, such as 2.8 degrees on the left and 3.1 degrees on the right.
• Camber Angle: Set the camber angle to around 0.5 degrees on the left and 0.3 degrees on the right. This minor variation offers a pull-free ride and minimizes tire wear.

2. Adjusting Ball Joints and Steering Arms

• When upgrading brakes, especially if longer steering arms are involved, make significant corrections to the lower ball joints. This step is crucial to achieving the correct front total toe.

3. Fine-Tuning Toe Settings

• Total Toe Adjustment: Use the adjustability within each tie rod sleeve to set the total toe to approximately 0.17 inches. This setting helps in maintaining a crisp and responsive steering feel.

4. Test Driving Post-Alignment

• After completing the alignment adjustments, take the vehicle for a test drive to ensure it rides smoothly. Look for any signs of wandering or directional pull. A well-aligned vehicle should track straight without any steering corrections.

5. Evaluating Brake Performance

• Brake Feel: The brake pedal should allow for easy modulation. You should be able to apply gradual pressure for slow stops or quickly pound for rapid deceleration.
• Stopping Power: Ensure enhanced stopping power post-upgrade. The vehicle should decelerate without pulling to one side and with minimal tire squeal.

Key Considerations:

• Always follow the specific guidelines for your vehicle model.
• Use quality alignment tools and ensure all components are securely fastened.
• Revisit alignment settings periodically after the initial adjustments to account for any settling or component shifts.

By following these steps, you can ensure your vehicle remains properly aligned, providing both a comfortable ride and enhanced braking performance.

 

What specific braking issues did the 1967 Dart GT experience?

The 1967 Dart GT exhibited several significant braking issues, particularly in congested traffic. Equipped with power-assisted, four-wheel drum brakes, the system was considered adequate for its era but falls short by today’s standards.

Key Problems Identified

• Inconsistent Braking Performance: The front drum brakes, despite being installed and adjusted correctly, demonstrated variability in braking efficiency.
• Pulling to One Side: A notable issue was the car’s tendency to pull to the right during braking. This was attributed to one front 10-inch drum being slightly larger in circumference than the other.

These issues contribute to a less reliable braking experience, raising safety concerns in modern driving conditions.

 

What wheel size is recommended for disc brake upgrades on classic cars?

For classic car disc brake upgrades, a 15-inch wheel size is generally recommended for a smooth, obstruction-free installation. While it’s possible to fit 14-inch wheels, the clearance between the wheel and the caliper can be extremely minimal. In fact, the gap might be as tight as 0.080 inches, which is still within acceptable specifications but leaves very little room for error. Therefore, opting for 15-inch wheels can ensure a more reliable and hassle-free setup.

 

What alignment specifications can help achieve a pull-free ride in a vintage car?

Achieving a Pull-Free Ride in a Vintage Car: Key Alignment Specifications

To ensure your vintage car glides smoothly down the road without any pulling, setting the correct alignment specifications is crucial. Here’s a breakdown of the key parameters you should adjust:

1. Caster:
   • Left: Aim for around 2.8 degrees.
   • Right: A bit higher at 3.1 degrees.
     This slight difference helps counterbalance the crown of the road, promoting a pull-free ride.
2. Camber:
   • Left: Set to approximately 0.5 degrees.
   • Right: Slightly less at 0.3 degrees.
     Proper camber settings will minimize tire wear while maintaining stability.
3. Toe:
   • Total Toe: Adjust to 0.17 inch.
     Correct toe settings are essential for ensuring the wheels are parallel and tracking straight.

In some vintage models, adjusting the lower ball joints and longer steering arms might be necessary to align the front total toe accurately. Luckily, tie rod sleeves typically offer enough adjustability to fine-tune the alignment.

Summary Checklist

• Caster: 2.8° (L); 3.1° (R)
• Camber: 0.5° (L); 0.3° (R)
• Total Toe: 0.17 inch

Pro Tips:

• Always recheck the alignment settings after a short test drive.
• Regularly inspect tie rod sleeves and ball joints for wear and tear.

By following these specifications, you can enjoy a seamless, pull-free driving experience in your vintage car while also mitigating tire wear.

 

What tools and additional parts might be needed for fabricating new brake lines?

Fabricating new brake lines requires a blend of the right tools and precise skills. Here’s a detailed look at what you’ll need:

Essential Tools

1. Tubing Cutter: A must-have for cleanly cutting the brake line tubing to the desired length.
2. Tubing Benders: Different sizes of tubing benders are necessary to achieve the correct bends without kinking the lines. These benders help mold the tubing to fit perfectly within the vehicle’s structure.
3. Flaring Tool: This tool is crucial for creating flares at the ends of the tubing, ensuring leak-free connections with the brake components.

Additional Parts

• Brake Line Tubing: Choose durable tubing material that meets your vehicle’s specifications, such as steel, copper-nickel, or stainless steel.
• Fittings and Connectors: Various fittings and connectors will be required to join segments of tubing and attach them to the brake system.
• Brake Fluid: Ensure you have the appropriate type and quantity of brake fluid to refill the system after installation.

Tips

If you’re not confident in handling these tools or creating quality bends and flares, it’s wise to seek assistance from someone with more experience. Achieving leak-free connections and precise tubing shapes is critical for the safety and performance of your brake system.

 

How do you ensure that the brake warning light functions correctly after an upgrade?

How to Ensure the Brake Warning Light Functions Correctly After an Upgrade

To keep the brake warning light on your instrument cluster operational after upgrading your brake system, follow these steps:

1. Identify the Original Wiring: Locate the wire connected to the original pressure differential switch.
2. Cut the Existing Wire: Carefully cut the wire connected to the factory pressure differential switch.
3. Connect to the New Switch: Attach the cut wire to the new pressure differential switch installed in the upgraded combination valve, such as those offered by CPP.

By connecting the wire to the new pressure differential switch, you ensure that your brake warning light continues to provide accurate alerts. This step is crucial for maintaining safety and functionality in your upgraded braking system.

 

How do you properly bleed a brake system after installation?

How to Properly Bleed a Brake System After Installation

Bleeding the brake system is crucial to ensure your brakes function correctly and safely after installation. Follow these steps to thoroughly and effectively bleed your brakes:

Gather Your Tools and Materials

• Brake fluid
• A brake bleeder kit or hose
• A wrench set
• A jack and jack stands
• A container to catch old brake fluid
• A partner to assist you

Step-by-Step Process

1. Preparation:
   • Ensure the vehicle is on a level surface.
   • Raise the car with a jack and secure it on jack stands.
   • Remove all the wheels to access the brake bleeder screws.
2. Start with the Longest Brake Line:
   • Begin with the brake furthest from the master cylinder. This typically means starting with the right rear wheel.
   • Attach the brake bleeder kit or hose to the bleeder screw on the caliper.
3. Bleed the Brake:
   • Have your assistant pump the brake pedal several times, then hold it down.
   • While the pedal is held down, open the bleeder screw to let out fluid and air. Close the screw before your assistant releases the pedal.
   • Repeat this process until you observe clear, air-free brake fluid.
4. Progress to the Next Brake:
   • After fully bleeding the rear right brake, move to the left rear brake, followed by the right front, and finally the left front brake.
   • Ensure you check and top up the brake fluid reservoir between steps to prevent it from running dry, which can introduce more air into the system.
5. Test the Brake Pedal:
   • Once all corners are bled, test the brake pedal for firmness.
   • If it feels soft or spongy, you may need to repeat the bleeding process to remove any remaining air pockets.
6. Reassemble and Test:
   • Reinstall the wheels and lower the car back to the ground.
   • Start the engine to check the brake pedal feel with the engine’s vacuum assist. The pedal should be firm when depressed with more force.
   • Take a short, cautious drive to ensure the brakes are working correctly. Be attentive to pedal feel and braking performance.

By following these steps, you can effectively bleed the brake system, ensuring optimal brake performance and safety.

 

How do you address length discrepancies in lever arms for power boosters?

Addressing Length Discrepancies in Lever Arms for Power Boosters

When encountering length discrepancies in lever arms for power boosters, the key steps involve carefully modifying and adapting components to ensure a perfect fit.

Step-by-Step Guide:

1. Remove Existing Cotter Pins:
   • Begin by taking out the cotter pins that secure the lever arm. These small fasteners can be carefully removed using a pair of pliers or a cotter pin removal tool.
2. Switch the Cross Pin:
   • Next, slide the cross pin out of the lever arm currently attached to the booster. This pin needs to be repositioned to align with the new lever arm. Make sure to align the cross pin hole with that of the booster.
3. Install the Cross Pin:
   • Gently guide the cross pin through the new lever arm, securing it in place. Ensure it moves freely within the lever arm to prevent any operational issues later.
4. Secure with New Cotter Pins:
   • After the cross pin is properly positioned, install new cotter pins to lock it in place. Make sure these pins are tightly fastened to prevent any movement.
5. Attach Rubber Grommet and Firewall Gasket:
   • Finally, guide the rubber grommet and firewall gasket onto the new lever arm. These components provide necessary seals and prevent debris from entering the system.

By following these steps, you can effectively address any length discrepancies in lever arms for power boosters, ensuring a secure and functional fit.

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