Full Nissan GT-R GTR R35 GR6 Gearbox rebuild with Albins gears 1-6 & Linney circlips.

Introduction

This tutorial provides a comprehensive guide on how to rebuild a Nissan GT-R R35 GR6 gearbox using Albins gears and Linney circlips. Whether you're a seasoned mechanic or a car enthusiast looking to enhance your vehicle's performance, this step-by-step guide will help you navigate the process effectively.

Step 1: Gather Necessary Tools and Materials

Before starting the rebuild, ensure you have all the required tools and materials.

Tools Needed

• Socket set
• Torque wrench
• Screwdrivers (flathead and Phillips)
• Pliers
• Snap ring pliers
• Gear puller
• Cleaning supplies (brake cleaner, lint-free cloths)

Materials Required

• Albins gearset (1-6)
• Linney circlips
• New transmission fluid
• Gasket sealant (if necessary)

Step 2: Remove the Gearbox

To access the gearbox, follow these steps:

1. Lift the Vehicle: Use a hydraulic jack and secure it with jack stands.
2. Disconnect Components:
   • Remove the driveshaft.
   • Disconnect the shifter linkage.
   • Unplug any electrical connections related to the transmission.
3. Unbolt the Gearbox: Remove the bolts securing the gearbox to the engine and carefully lower it.

Step 3: Disassemble the Gearbox

Once the gearbox is removed, disassemble it carefully:

1. Remove the End Cover: Unscrew and take off the end cover of the gearbox.
2. Extract Old Gears:
   • Use the gear puller to remove the gears.
   • Keep track of the order of assembly for reinstallation.
3. Remove Circlips: Carefully use snap ring pliers to remove the old circlips.

Step 4: Install Albins Gearset

Now it’s time to install the new Albins gearset:

1. Clean the Components: Use brake cleaner to clean all parts before installation.
2. Install New Gears:
   • Align and press the new Albins gears into place.
   • Ensure they are seated properly.
3. Install Linney Circlips:
   • Fit the new circlips onto the gears to secure them in place.
   • Ensure they are properly seated to avoid any issues during operation.

Step 5: Reassemble the Gearbox

With the new gearset installed, reassemble the gearbox:

1. Replace the End Cover: Secure the end cover back onto the gearbox with bolts.
2. Torque Specifications: Use a torque wrench to tighten bolts to the manufacturer’s specifications.
3. Check for Clearance: Ensure there is proper clearance between gears and other components.

Step 6: Reinstall the Gearbox

After reassembly, reinstall the gearbox:

1. Lift into Position: Carefully raise the gearbox and align it with the engine.
2. Reconnect Components:
   • Reattach the driveshaft.
   • Reconnect the shifter linkage.
   • Plug in any electrical connections.
3. Secure the Gearbox: Bolt the gearbox back to the engine, ensuring everything is tight and secure.

Step 7: Fill with Transmission Fluid

Finally, fill the gearbox with new transmission fluid:

1. Consult Specifications: Refer to the GT-R manual for the correct type and amount of fluid.
2. Fill the Gearbox: Using a funnel, pour the fluid into the designated fill point.
3. Check Levels: After filling, check the fluid levels with the dipstick.

Conclusion

Rebuilding the Nissan GT-R R35 GR6 gearbox with Albins gears and Linney circlips is a detailed process that requires attention to detail and proper tools. By following these steps, you can enhance your vehicle's performance and reliability. Always remember to consult your vehicle’s manual for specific torque specs and fluid requirements. After the rebuild, consider taking your GT-R for a test drive to ensure everything functions smoothly. Happy rebuilding!