Why Upgrade to a South Bend Evo Clutch?

The South Bend Evo clutch is engineered for drivers who demand sharper throttle response, higher torque capacity, and consistent engagement. Unlike many OEM clutches that prioritize comfort and cost, the Evo series uses upgraded friction materials, a robust pressure plate, and a precision-machined disc to handle increased horsepower without sacrificing daily-driver civility. Whether you’ve added a tune, a turbo kit, or simply want crisper shifts, this clutch delivers a noticeable improvement in pedal feel and power transfer.

Tools and Materials Needed

A successful installation depends on having the right tools at hand. Gather everything before you lift the car to avoid unnecessary trips to the tool box.

  • South Bend Evo Clutch Kit – Verify the kit matches your vehicle’s year, make, and model.
  • Basic hand tools – Metric and SAE socket sets, wrenches, screwdrivers, and pliers.
  • Torque wrench – Essential for tightening fasteners to factory specs. A ½‑inch drive torque wrench covering 20–150 ft‑lb is ideal.
  • Jack and jack stands – Use a low‑profile floor jack and four stands rated for your vehicle’s weight.
  • Clutch alignment tool – Often included in the kit; otherwise, buy one that matches the input shaft spline.
  • Brake cleaner or aerosol degreaser – For cleaning the flywheel and pressure plate surfaces.
  • Rags and shop towels – Keep the work area clean and free of oil.
  • Safety glasses and gloves – Protect your eyes from debris and your hands from chemicals.
  • Transmission jack (recommended) – Makes lowering and raising the transmission much safer and easier.
  • Penetrating oil – Useful for freeing rusted bolts on older vehicles.

Preparation Steps

Proper preparation prevents mistakes and reduces installation time. Allocate a full weekend or at least six to eight hours of uninterrupted work.

  • Park the vehicle on a level concrete floor. Engage the parking brake and chock the rear wheels.
  • Disconnect the negative battery terminal to prevent accidental starter engagement or electrical shorts.
  • Raise the vehicle with the floor jack and place jack stands under the designated lift points. For front‑wheel‑drive cars, also support the engine with a separate jack or engine support bar before removing the transmission.
  • Remove any under‑engine covers or splash shields that may block access to the transmission bell housing.

Safety Note: Never work under a vehicle supported only by a hydraulic jack. Always use rated jack stands and verify the vehicle is stable before sliding underneath.

Removing the Old Clutch

This is the most labor‑intensive part of the job. Work methodically and label every bolt and connector as you go.

1. Drain Transmission Fluid (if applicable)

If your transmission has a separate fill and drain plug, drain the fluid into a catch pan. This avoids spillage when tilting the gearbox. Replace the drain plug after draining.

2. Disconnect Clutch Line and Electrical Connections

Unbolt the clutch hydraulic line from the slave cylinder or release bearing. Plug the line to prevent fluid loss and contamination. Disconnect the reverse light switch, speed sensor, and any other wiring harness connectors. Take photos or tag connectors for reassembly.

3. Remove the Transmission

  • Unbolt the starter motor and set it aside without straining the wiring.
  • Support the transmission with a transmission jack or a floor jack and a block of wood.
  • Remove the bell housing bolts. Work from top to bottom, using a swivel socket for hard‑to‑reach bolts near the block.
  • Carefully slide the transmission rearward until the input shaft clears the flywheel. Do not let the transmission hang unsupported.

4. Remove the Pressure Plate and Clutch Disc

Loosen the pressure plate bolts in a star pattern a few turns at a time to prevent warping the plate. Remove the bolts, then lift off the pressure plate and clutch disc. If the pilot bearing or release bearing needs replacement, now is the time.

Preparing the Flywheel

A smooth, clean flywheel surface is critical for clutch performance and longevity.

  • Inspect the flywheel – Check for scoring, cracks, heat spots, or uneven wear. Any damage requires resurfacing or replacement.
  • Resurface if necessary – Take the flywheel to a machine shop for a light cut (0.005–0.010 inch). Some aftermarket flywheels can be turned; others are disposable. Always follow South Bend’s recommendations.
  • Clean thoroughly – Wipe the flywheel with brake cleaner and a lint‑free rag to remove oil, grease, and dust. Handle the flywheel with clean gloves afterward.
  • Check the pilot bearing – If equipped, remove the old pilot bearing with a puller and install a new one using a driver tool. Grease the new bearing lightly.

Pro Tip: Many DIY failures come from a dirty or contaminated flywheel surface. Spend a few extra minutes on this step to avoid clutch chatter and premature wear.

Installing the South Bend Evo Clutch

With the flywheel ready, you can install the new clutch. Work on a clean bench or directly on the car if the flywheel is in place.

1. Align the Clutch Disc

Place the new clutch disc against the flywheel. Insert the clutch alignment tool through the splines and into the pilot bearing. Adjust the disc until the tool slides in and out smoothly, indicating perfect centering.

2. Install the Pressure Plate

Set the pressure plate over the disc and start all the bolts by hand. Tighten them evenly in a star pattern using a torque wrench. The South Bend Evo typically requires 15–20 ft‑lb for M8 bolts; confirm the spec in your kit’s instruction sheet.

3. Check the Release Bearing

Most South Bend Evo kits include a new release bearing and pilot bearing. Slide the release bearing onto the transmission input shaft sleeve. Grease the sleeve lightly with high‑temperature bearing grease to ensure smooth travel.

Reinstalling the Transmission

This step reverses the removal process but requires patience to avoid damaging the new clutch.

  • Raise the transmission with the jack and align the input shaft with the clutch splines. Slowly slide the transmission forward, wiggling gently if needed. Never force it – if it binds, stop and re‑align the clutch disc.
  • Once the bell housing contacts the engine block, install the bolts hand‑tight. Torque them to factory specifications in two passes using a criss‑cross pattern. Typical torque is around 55–65 ft‑lb for most vehicles.
  • Reinstall the starter motor, ensuring the heat shield (if any) is positioned correctly.
  • Reconnect the clutch hydraulic line, then bleed the system. Use a pressure bleeder or a helper to push the pedal while you open the bleeder screw on the slave cylinder.
  • Reattach all electrical connectors, sensor wiring, and the negative battery cable.

Final Steps and Break‑In Procedure

Before taking the car for a spirited drive, follow these final checks and break‑in guidelines.

Lower the Vehicle and Test

  • Remove the jack stands and lower the car to the ground.
  • Start the engine and listen for any unusual noises – grinding, chattering, or squealing. If the clutch pedal feels spongy, bleed the system again.
  • Pump the clutch pedal 20–30 times with the engine off to seat the hydraulic system.
  • Depress the clutch and shift through all gears. The engagement should feel smooth and positive.

Break‑In Guidelines

South Bend recommends a 500‑mile break‑in period for the Evo clutch. During this time:

  • Avoid aggressive launches, full‑throttle shifts, and prolonged slipping.
  • Vary driving speeds and gear selection to allow the friction material to mate evenly with the flywheel.
  • Do not tow heavy loads or race the vehicle.
  • After 500 miles, re‑torque the pressure plate bolts if the manufacturer specifies (some designs require a re‑check).

Common Mistakes to Avoid

  • Incorrect alignment – A misaligned disc makes transmission reinstallation difficult and can cause premature wear. Use the alignment tool and confirm it spins freely.
  • Overtorquing pressure plate bolts – This can distort the pressure plate diaphragm or strip the flywheel threads. Use a calibrated torque wrench.
  • Contamination – Even a fingerprint of oil or grease on the friction surface will cause chatter. Clean everything with brake cleaner and handle parts with clean gloves.
  • Skipping the pilot bearing – A worn pilot bearing creates noise and can cause the input shaft to wobble, leading to premature clutch failure.

External Resources

For additional vehicle‑specific torque specs and guidance:

Conclusion

Installing a South Bend Evo clutch is a rewarding upgrade that transforms your vehicle’s response and driving feel. By following this detailed guide, taking your time with the flywheel preparation, and adhering to the break‑in procedure, you’ll enjoy years of reliable performance. If you’re unsure about any step, consult a professional mechanic – a mistake during installation can compromise safety and durability. With the right tools and patience, you can confidently tackle this job and unlock the full potential of your drivetrain.