02-06 Nissan Altima Aluminum Crank Pulley Install QR25DE 2J-Racing Aluminum Crankshaft Pulley

Published on March 14, 2021
Duration: 12:14

This guide details the installation of a 2J Racing lightweight aluminum crank pulley on a 2006 Nissan Altima with the QR25DE engine. The process involves removing the front wheel, serpentine belt, and the old pulley, then installing the new pulley and torquing the bolt to 87 ft-lbs. The video emphasizes the importance of proper tools like an impact gun and slide hammer, and offers advice for achieving correct torque without specialized tools, while also noting the potential for increased horsepower and mid-range torque.

Quick Summary

Installing a 2J Racing lightweight aluminum crank pulley on a 2006 Nissan Altima QR25DE can yield approximately 4.5-5 horsepower. The process requires removing the front wheel and serpentine belt, then using specialized tools like an impact gun and slide hammer for bolt and pulley removal. The crank pulley bolt must be torqued to 87 foot-pounds, ideally with a pulley lock tool to prevent the engine from turning.

Chapters

  1. 00:27Introduction & Pulley Overview
  2. 00:56Vehicle & Engine Fitment
  3. 01:24Crank Seal Replacement Mention
  4. 01:50Accessing the Crank Pulley
  5. 02:01Expected Performance Gains
  6. 02:08Other Installed Modifications
  7. 02:25Post-Install Testing Plans
  8. 03:02Crank Pulley Location
  9. 03:05Serpentine Belt Removal
  10. 03:09Crank Pulley Bolt Removal Challenges
  11. 04:12Using PB Blaster
  12. 04:27Difficulty Removing Bolt
  13. 05:20Removing the Crank Pulley
  14. 05:25Slide Hammer vs. Pry Bar
  15. 06:37Caution with Old Pulley
  16. 06:57Pulley Keyway Alignment
  17. 07:06Crank Seal Installation (Separate Video)
  18. 07:23Aligning the New Pulley
  19. 07:45Importance of Keyway Alignment
  20. 08:03Tapping the New Pulley On
  21. 08:37Installing the Pulley Bolt
  22. 08:40Torque Specification
  23. 08:54Torquing Challenges
  24. 09:28Alternative Torquing Method
  25. 09:29Reinstalling the Serpentine Belt
  26. 10:16Final Checks & Test Drive
  27. 10:34Initial Performance Impressions
  28. 11:03Acceleration Run Teaser
  29. 11:23Upcoming Full Pull Video
  30. 11:50Mod Recommendation

Frequently Asked Questions

What are the expected performance gains from installing a 2J Racing lightweight aluminum crank pulley on a 2006 Nissan Altima QR25DE?

The 2J Racing lightweight aluminum crank pulley is advertised to provide an estimated horsepower gain of 4.5 to 5 horsepower. Drivers have reported a noticeable improvement in pulling power, especially in the mid-range throttle and during acceleration.

What is the correct torque specification for the crankshaft pulley bolt on a 2006 Nissan Altima QR25DE?

The torque specification for the crankshaft pulley bolt on a 2006 Nissan Altima with the QR25DE engine is 87 foot-pounds. It is crucial to achieve this torque accurately, ideally using a torque wrench and a pulley lock tool to prevent the engine from turning.

What tools are essential for installing a lightweight crank pulley on a Nissan Altima QR25DE?

Essential tools for this installation include a jack, jack stands, lug wrench, PB Blaster, a 14mm socket for the belt tensioner, and a 3/4 inch socket for the crank pulley bolt. An impact gun and a slide hammer are highly recommended for easier removal of the old pulley and bolt.

How can I prevent the crankshaft pulley from spinning when torquing the bolt?

The most effective method to prevent the crankshaft pulley from spinning while torquing the bolt is to use a specialized pulley lock tool that holds the pulley stationary. If this tool is unavailable, you can attempt to tighten it as much as possible with hand tools and then use an impact gun for a few quick bursts to reach the approximate torque spec.

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