Rb25det Turbos Ball Bearing?

[Sr PWR]

hey guys

as topic states are the rb25det turbos a ball bearing unit???

thanks

[paulr33]

oil cooled

water cooled

ball bearing

should be serviced every 100,000

other turbocharger options and configurations

- anti surge cover

- journal bearing

- thrust bearing

- plain bearing

- oil cooled only

- twin scroll turbocharger housing

- variable nozzle technogly (VNT)

[r33cruiser]

http://www.autospeed.com/cms/A_2245/printArticle.html

"Nissan/Garrett RB25DET (T3 style)

The Garrett T3-based turbocharger from Nissan’s RB25DET engine is one of the biggest OE Japanese turbos you can buy. They’re also relatively easy to find because they’re factory fitment to the ever-popular R33 Skyline GTS25T.

One of the biggest attractions of this turbo is its sophisticated design – it uses a water-cooled core with a roller bearing, ceramic turbine and lightweight compressor. These factors contribute to a very fast spool-up time.

In standard form, the RB25DET engine generates 187kW and we have seen the standard turbo pushed to around 250kW in some applications. At this output, however, the ceramic turbine is likely to fail – especially when held at high load for extended durations.

The RB25DET turbocharger employs a 60mm compressor inlet and a 38mm discharge nozzle. The compressor housing is identified with a 0.40 A/R. On the exhaust side, the turbine inlet passage is 65 x 45mm and the mounting flange measures 110 x 70mm. The turbo connects to the exhaust manifold with 4 bolts and the dump pipe is attached by 6 bolts.

This is a great turbo for any engine making less than 250kW."

however the vg30det turbo was the same. however later models were bb

[paulr33]

well there u go - roller bearing