Turbo Care NZ Ltd

This JCB came to us with boost-related fault codes. Once we stripped the turbo, we found severe corrosion inside the turbine housing.

This is usually caused by moisture from condensation during long periods of inactivity or short running, or water entering through the exhaust. Less commonly, coolant entering the exhaust can also be responsible.

The corrosion can restrict or seize the turbo’s variable vanes, preventing it from controlling boost correctly and causing underboost or overboost codes.

The fault code tells you where to look the strip-down shows what’s really going on!

A couple of Nissan VG30 turbochargers in the workshop for a freshen up and performance upgrade.

These factory turbochargers feature ceramic turbine wheels, similar to the RB series turbos. For their time, they were an advanced design, combining lightweight ceramic turbines with a ball-bearing centre section to deliver excellent response.

Unfortunately, the ceramic turbine wheels are also well known for failing, particularly on modified engines or after years of service.

For many years we've been upgrading these units by machining a Garrett CHRA into the original housings. This retains around 95% bolt-in compatibility while significantly improving durability and reliability.

Only a couple of minor modifications to the oil feed system are required due to converting them back over to journal bearing

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This Nissan Navara turbo came into us for a warranty assessment...

Safe to say it didn’t take a rocket scientist long to figure this one out 😅

🏁 RACE 1 WIN AT THE BEND! 🏆

🥇 P1 - Race Winner
🚛 #19 BDK Earthmoving Super Truck
👨‍🏁 Dale Cornfoot

Turbocharger Tip

When removing or reinstalling a compressor cover, take extra care not to contact the compressor wheel blades during assembly. It does not take much to nick, bend or damage a blade especially on tighter tolerance turbochargers.

Even minor blade damage can lead to:
Balance issues
Reduced performance
Unwanted noise
Premature turbocharger failure

A few good habits

Keep components clean
Never force the cover into place
Check alignment carefully
Rotate the assembly by hand before tightening fully

A few extra minutes and a bit of care can save a very expensive repair bill later on

This Garrett TV8101 turbo came in for a checkover today.

Once we removed the turbine housing, it became pretty clear we’d found half the engine inside it 🤣

Unfortunately this is the result of a dropped valve, a good reminder of just how much damage engine failures can cause to a turbocharger in a very short amount of time.

A few modifications underway to fit this Evo 3 turbo in place of the old TC06 setup on a Starion.

Because the factory TC06 turbine housing bolts directly to the manifold, and the Evo 3 housing uses studs instead, we needed to relieve the back of the housing to allow clearance for the nuts and open the mounting holes out to 10.5mm.

Nothing too major, just a few tweaks to make everything work nicely together. Should be a great upgrade and definitely wake the old girl up.