Understanding the Clutch Upgrade for Your Nissan 370Z

Upgrading the clutch in your Nissan 370Z is one of the most rewarding modifications for improving driving feel and performance. The factory clutch is designed for a balance of longevity and everyday drivability, but it quickly becomes a weak link when you add forced induction, nitrous, or even aggressive naturally aspirated modifications. A performance clutch delivers firmer pedal feel, higher torque capacity, and more precise engagement, allowing you to put power down consistently without slipping.

Before diving into the installation, you need to understand what a clutch upgrade involves. The clutch assembly consists of the clutch disc, pressure plate, and often a new release bearing or pilot bearing. Many upgrade kits also include a lightweight flywheel, which reduces rotational inertia and lets the engine rev more freely. Choosing the right kit depends on your power goals and driving habits: organic discs offer smooth engagement for street driving, while ceramic or puck-style discs handle high torque but can be grabby in traffic.

This expanded guide provides comprehensive step-by-step instructions for installing a clutch upgrade on a Nissan 370Z, with detailed explanations, torque specifications, and troubleshooting tips. We’ll cover everything from preparation and tool selection to break-in procedures so you can complete the job with confidence.

Tools and Materials Needed

Having the correct tools on hand before you start will save hours of frustration. Do not rely on a basic socket set alone; many parts require specific sizes and torque values. Below is a thorough list, along with why each tool matters.

  • New clutch kit – Includes disc, pressure plate, release bearing, and pilot bearing. Popular brands for the 370Z include ACT, Exedy, and Z1 Motorsports.
  • Torque wrench – A 3/8” or 1/2” drive wrench capable of reading in ft-lbs and in-lbs. Critical for pressure plate bolts and flywheel bolts.
  • Socket set – Metric sockets from 8mm to 19mm, plus extensions and a universal joint for hard-to-reach bolts.
  • Jack and jack stands – A low-profile jack for the 370Z’s ground clearance and at least four stands for safe support.
  • Clutch alignment tool – Usually included with the kit, but a universal input shaft tool works as a backup.
  • Brake cleaner – To degrease the flywheel and pressure plate surfaces before installation.
  • Shop rags – Clean cloths for wiping components and absorbing spills.
  • Safety glasses – Protect your eyes from debris and brake cleaner spray.
  • Mechanics gloves – Prevent cuts and keep grease off your hands.
  • Transmission jack or floor jack + helper – The 370Z transmission is heavy; a dedicated transmission jack makes removal safer.
  • Pilot bearing puller – If your new kit includes a pilot bearing, you need a slide hammer or puller to remove the old one.
  • Thread locker (medium strength) – Recommended for pressure plate bolts to prevent loosening under vibration.
  • Penetrating oil – For stubborn bolts, especially the exhaust and driveshaft fasteners.

Preparation and Safety

Workspace Setup

Work on a level concrete surface with good lighting. The Nissan 370Z is relatively low to the ground, so a flat driveway or garage floor is ideal. Clear the area of clutter and have a sturdy workbench nearby for the removed transmission.

Vehicle Preparation

Disconnect the negative battery terminal first. This prevents accidental starter engagement while you are working near the transmission and also protects the ECU. Next, drain the transmission fluid—removing the drain plug before unbolting the transmission saves a messy cleanup later. Finally, remove the center console shifter trim inside the cabin to access the shift linkage; on the 370Z, you can disconnect the shifter from outside as well, but interior access makes it easier.

Safety Gear

Never rely solely on a jack; always use jack stands rated for the vehicle weight (the 370Z weighs about 3,200 lbs). Wear safety glasses when using brake cleaner or grinding. Gloves prevent burns from hot components and cuts from sharp edges.

Step-by-Step Installation Process

1. Lift the Vehicle and Remove Undertray

Raise the front of the vehicle with the jack and place jack stands under the front pinch welds or subframe. For rear-wheel drive access, you may also need to raise the rear. Remove the engine undertray (plastic splash shield) using a 10mm socket. This exposes the transmission pan and bellhousing.

2. Disconnect Drivetrain Components

Remove the driveshaft by unbolting the four bolts at the rear differential flange and the two at the transmission output flange. Mark their orientation for reassembly. Next, unbolt the starter motor (two bolts, 14mm) and move it aside; you do not need to disconnect the electrical connector if you can secure it out of the way. Also remove the transmission crossmember (four bolts, 14mm) and support the transmission with a jack.

3. Remove the Transmission

Unbolt the bellhousing from the engine block. The 370Z uses about eight bolts; the top two are accessible from above using a long extension and universal joint. Carefully lower the transmission while keeping it level to avoid damaging the input shaft or clutch disc. If it binds, double-check that all bolts are removed and that the shifter linkage is disconnected.

4. Remove the Old Clutch

With the transmission out, you see the pressure plate and clutch disc. Remove the six pressure plate bolts in a star pattern to prevent warping the plate. Lift off the pressure plate and disc. Inspect the flywheel for glazing, heat cracks, or spots. If the flywheel is in good condition, you can reuse it, but a performance upgrade often includes a new lightweight flywheel. Remove the old pilot bearing from the crankshaft using a puller or a pilot bearing removal tool.

5. Install the New Pilot Bearing and Flywheel (if applicable)

Tap the new pilot bearing into the crankshaft recess using a socket that matches its outer race. Do not hammer on the inner race—this damages the bearing. If you are replacing the flywheel, clean the new flywheel surface with brake cleaner and install it with new bolts (if provided) or reusing old bolts with thread locker. Torque flywheel bolts to 72 ft-lbs in a crisscross pattern (refer to Nissan factory specs).

6. Install the New Clutch Disc and Pressure Plate

Apply a thin layer of anti-seize to the input shaft splines (optional, but helps future removal). Place the new clutch disc onto the flywheel, centering it with the alignment tool. Align the splines so the tool slides in smoothly. Then position the pressure plate over the disc and hand-tighten its bolts. The pressure plate is often marked “flywheel side” or “pressure side”; ensure correct orientation.

7. Torque the Pressure Plate

Using a torque wrench, tighten the pressure plate bolts to 20 ft-lbs for most aftermarket kits, but always verify with the manufacturer’s instructions. Tighten in a star sequence to apply even clamping force. Remove the alignment tool. Rotate the crankshaft by hand (using a socket on the crank pulley bolt) to confirm the disc moves freely with no binding.

8. Reinstall the Transmission

Lift the transmission into position using a jack or helper. Align the input shaft with the clutch disc splines—this can be tricky. If it does not slide in easily, rotate the transmission output flange slightly to align the splines. Never use force to push the transmission; it should glide in with gentle pressure. Once fully seated, install the bellhousing bolts and torque them to 55 ft-lbs (M12 bolts) or as specified. Reattach the crossmember, starter, driveshaft, and shift linkage. Refill transmission fluid with the recommended GL-4 75W-90 fluid (about 2.7 quarts).

9. Reconnect Battery and Check Operation

Reconnect the negative terminal. Start the engine and listen for unusual noises—especially from the clutch area. Depress the clutch pedal several times to bleed the hydraulic system if you opened the slave cylinder. Check fluid level in the clutch master cylinder reservoir; the 370Z uses DOT 3 brake fluid. A spongy pedal indicates air in the line; bleed the slave cylinder using a typical two-person method or a pressure bleeder.

Post-Installation Procedures

Clutch Break-In

Do not immediately rev the engine hard or do a burnout. Most clutch manufacturers recommend a break-in period of 300–500 miles of gentle driving. During this time, avoid aggressive launches, high-rpm shifting, and holding the clutch at the friction point for extended periods. The break-in process allows the disc and pressure plate to mate evenly, resulting in longer clutch life and smoother engagement.

Test Drive and Adjustment

Take a short test drive in an area with little traffic. Engage the clutch from a stop multiple times to feel the engagement point. If the pedal feels too high or too low, you may need to adjust the clutch pedal position via the pushrod or the switch. The 370Z has a self-adjusting clutch mechanism, but aftermarket pressure plates can change the engagement point. Some drivers prefer to install an adjustable clutch master cylinder or a pedal stop. Check for any vibration or slipping during a gentle acceleration in 3rd gear; if slipping occurs, the clutch may not be fully seated or the break-in process is necessary.

Common Mistakes to Avoid

  • Not using a clutch alignment tool – Without it, the disc may be off-center, preventing the transmission from sliding in. Use the tool provided or a spare input shaft.
  • Contaminating friction surfaces – Grease or oil on the clutch disc or flywheel causes slipping. Handle components with clean gloves and wipe surfaces with brake cleaner before assembly.
  • Skipping torque specs – Over-torquing pressure plate bolts can warp the plate; under-torquing leads to loosening and noise. Use a calibrated torque wrench.
  • Forgetting the pilot bearing – A worn or missing pilot bearing causes input shaft vibration and noisy operation. Replace it every clutch change.
  • Reusing old flywheel bolts – Many flywheel bolts are stretch-to-yield and should be replaced. New bolts often come with the flywheel kit.
  • Ignoring hydraulic system bleeding – Air in the clutch line results in a soft pedal and incomplete disengagement. Bleed the system until the pedal feels firm.

Choosing the Right Clutch Upgrade

The Nissan 370Z responds well to a variety of clutch upgrades depending on your power level and driving style. For street-driven cars with bolt-on mods (intake, exhaust, tune), a stage 1 organic clutch is ideal. It holds about 400–450 lb-ft of torque while retaining near-stock pedal effort. For supercharged or turbocharged builds aiming for 500+ wheel horsepower, a stage 2 or stage 3 ceramic clutch provides the necessary clamping force. However, expect a heavier pedal and more aggressive engagement.

Many enthusiasts pair their clutch upgrade with a lightweight flywheel (approx. 13–15 lbs compared to the stock 22 lbs). This improves throttle response and allows the engine to rev faster, but it can make the drivetrain noisier at idle due to reduced dampening. Popular flywheel choices include single-mass steel or billet aluminum. Check compatibility with your selected clutch kit—some kits require a specific flywheel thickness.

If you are unsure what specifications your car needs, consult a trusted Nissan specialist or check forums like The370Z.com for real-world feedback. Many manufacturers like Z1 Motorsports offer complete clutch-and-flywheel combos with detailed fitment guides.

Conclusion

Installing a clutch upgrade in your Nissan 370Z is a challenging but deeply satisfying project that transforms how your car drives. By following these expanded steps, paying attention to critical torque values, and taking care during break-in, you can enjoy a durable, high-performance clutch that handles your driving ambitions. Whether you are tracking the car, drifting, or simply want a more connected feel on the street, a proper installation ensures years of reliable service. Take your time, ask for help if needed, and you will be rewarded with crisp shifts and full control over your power delivery.