Mastering LSD Conversion Kit Installation: Avoid Common Mistakes

August 18, 2023 2 min read

RacingDiffs LSD conversion set fail

Installing a LSD conversion kit can greatly enhance your vehicle's performance and handling. However, even the most experienced enthusiasts can stumble upon mistakes during the installation process. In this blog post, we'll discuss three of the most common mistakes that people make when installing an LSD conversion kit and provide insights on how to avoid them.

 

Full video is available below
3 mistakes that lead to RacingDiffs LSD conversion set failure

 

  1. Inadequate thread lock application:

One crucial aspect of installing an LSD conversion kit is securing the central pin in place with the bolt. The first mistake often encountered is improper application of thread lock.

How to apply thread locker on RacingDiffs LSD conversion set

Through hole vs. Blind hole:

Understanding the type of hole is essential. If it's a through hole, apply thread lock directly to the bolt's threads. However, if it's a blind hole, as found in the central pin, the thread lock should be placed inside the hole itself rather than on the bolt's threads.

 

  1. Circlip placement precision:

The circlip plays a key role in maintaining the central pin's position within the differential. A mistake often made is incorrectly placing the circlip, compromising the entire assembly.

How to press central pin on BMW Differential when installing RacingDiffs LSD conversion kit

Proper circlip placement:

Ensure that the circlip is accurately aligned with its designated ledge. To securely position the circlip, place the complete differential unit in a hydro press. Gently press the central pin into position while the C clip is still in its designated ledge. This careful approach prevents any misalignment that could affect the central pin's functionality.

 

  1. Insufficient lubrication:

Lubrication is a critical step that can't be ignored during the installation process. Overlooking proper lubrication can lead to severe damage and making the LSD conversion kit unusable.

How to install LSD conversion kit properly

The importance of lubrication:

To prevent excessive friction and potential overheating, it's essential to lubricate all vital sliding components. Neglecting lubrication could result in spider gears overheating the central pin, leading to its eventual deformation. The parts might fuse together, causing the central pin to break at the point of contact with the spider gears. This unfortunate outcome is avoidable by consistently lubricating the central pin and its sleeve valve before and during assembly.

 

Recommendation for lubricant:

We strongly recommend using Motul gear competition 75w140for our LSD unit. This high-quality lubricant not only extends the lifespan of your LSD conversion kit but also ensures highest possible performance. Lubricating the components correctly will help your LSD unit function smoothly and efficiently.

Final lubrication tip:

Before applying thread lock, make sure to clean the hole for the bolt thoroughly. This simple step can make a significant difference in the effectiveness of the thread lock and secure the overall stability of your LSD conversion kit. 

 

Conclusion:

Installing an LSD conversion kit can be a fulfilling experience that enhances your vehicle's performance. By avoiding these common mistakes - improper thread lock application, circlip misplacement and insufficient lubrication - you can ensure a smooth and successful installation process. Taking the time to understand the importance of these crucial steps will not only prevent potential issues but also contribute to the longevity and effectiveness of your LSD conversion kit.


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