RIESUMIAMO LA SKYLINE GT-R 33 E INIZIAMO QUESTO RB28 DA 700HP!

Summary

The video shows the rebuild of a damaged RB28 engine for a Skyline GTR race car. The crankshaft was analyzed and re-machined, special tri-metal bearings were sourced to compensate for wear, and custom connecting rods were made to fit the existing pistons. Though not built for maximum power, intelligent modifications aim for reliability, durability and drivability. The rebuild documents common problems and solutions when pushing engines to their limit, stressing the importance of development, testing and after-sales support over simply chasing dyno numbers.

Takeaways

• 😀 They restored an old GTR that was covered in dust and dirt to preserve it
• 😯 The engine seized due to oil pump failure, damaging the crankshaft
• 🔧 They reconditioned the damaged crankshaft with special undersized bearings
• ⚙️ The crankshaft was nitride hardened and precision ground multiple times
• 🔬 The crankshaft was metallographically tested to reveal porosity issues
• 🛠 The block was rebored and the head was reworked to stock specs
• 🤔 The rebuild will be tested long-term to validate the crankshaft fix
• 🚗 The goal is good power, reliability and serviceability for customers
• 🏎 They aim to develop tunes with lower boost for engine longevity
• 👍 The focus is on real-world testing and problem solving, not just dyno numbers

Q & A

What is the purpose of the video?

The purpose of the video is to provide an overview of the restoration process of a damaged GTR, focusing on the assembly of the RB28 engine.

What were the main issues with the engine?

The main issues were a damaged oil pump which caused a lack of oil pressure, leading to the failure of the crankshaft and the burning of the connecting rods.

What did they do to try and salvage the crankshaft?

They conducted a metalloscopic examination to identify any porosity or defects in the crankshaft. After that, they had it heat treated, straightened, and then re-ground to fit new, smaller diameter bearings.

What type of bearings were used?

They used tri-metal Renault diesel truck engine bearings, which are thicker and more durable than typical aftermarket bearings.

Why did they opt to use the original pistons?

They decided to use the original pistons because they were still in good condition and it would save money, as they didn't need to create a high-horsepower engine for the GTR.

How does this engine assembly differ from their usual process?

Instead of using a brand-new crate engine, they are using their old RB28 as a test bed to experiment with different techniques and parts, which they can then apply to future engine builds.

What is the purpose of the project?

The purpose of the project is to develop a reliable and durable engine that can withstand high horsepower output without any issues, and to document the process so that they can apply their learnings to future engine builds.

What type of turbo will be used?

They will be using a smaller turbo from a previous RB26 build, which should make the engine more responsive and aggressive compared to the original setup.

Why is it important to subscribe to their channel?

It's important to subscribe to their channel to support their in-depth technical videos and to follow the progress of their projects, as they share valuable insights into engine building and troubleshooting.

What is the future plan for the project?

In future videos, they will continue disassembling and reassembling the engine, documenting the process and sharing their learnings, with the goal of eventually installing the engine back into the GTR and taking it to car shows.