At Stainless Diesel, we all know that high performance requires occasional maintenance. Whether you're dealing with normal wear and tear or just looking for a boost in power, knowing how to properly rebuild your S300 turbo is a beneficial skill for any diesel enthusiast or mechanic.

In our latest deep dive video, we walk you through the entire teardown and rebuild process. Here’s a breakdown of the essential steps to get your turbo back to its peak performance!

Why Rebuild?

Before diving in, it's important to understand why a rebuild is needed. Over time, heat and friction can degrade seals and bearings. A proactive rebuild prevents catastrophic failure, while ensuring your engine stays efficient and powerful.

Essential Steps

1. Teardown and Inspection

The first step is a clean disassembly. We demonstrate how to carefully remove the housings and inspect the internal components.

• What to look for: Check the compressor wheel and turbine for any signs of dusting, nicks, or heat damage.

• Pro Tip: Keep your parts organized! A clean workspace is a must for turbo work.

2. Cleaning and Prep

You can't build a high performance machine on a dirty foundation. We show you the best methods for cleaning the center section (CHRA) and housings to ensure a perfect seat for new seals and bearings.

3. Installing the Rebuild Kit

This is where the precision comes in. The video covers:

• Replacing the journal bearings and thrust bearings.

• Installing new O-rings and seals.

• Proper lubrication techniques to ensure a safe "first start" after the rebuild.

Grab your rebuild kit here : S300 Rebuild Kit

4. Reassembly and Torque Specs

Putting it back together is more than just tightening bolts. We discuss the importance of proper alignment and following specific torque sequences to avoid binding or premature wear.

Watch the Full Walkthrough

Reading about it is one thing, but seeing the clearances and techniques in action is another. You can watch the full step-by-step tutorial on our YouTube channel: