Ballbearing Turbos?

[BBartels]

What is the advantage of a ballbearing turbo vs. standard? Doesnt a standard turbo bearings float in the high pressure oil anyway?

 

[GOTSOOT]

disadvantage!! Wait till you have to have the BB turbo rebuilt, you will have to turn all the old balls into $50. 00 dollar bills

 

[NVR FNSH]

"Standard" turbos use journal bearings to support the shaft assy. A ball bearing turbo has significantly less drag (frictional losses) and will spool up much faster. Ball bearing turbos are more susceptible to contaminated oil problems though.



Brian

 

[HoleshotHolset]

How are the BB and VNT/VGT Garretts in the 6. 0L PSD's holding up?



I haven't heard too much in the way of turbo failures on those engines...



I actually got to take an up-close and personal look at a 6. 0L PSD Garrett turbo... and was able to take the compressor and turbine sections apart. If it weren't for the hydraulic (engine oil) VNT/VGT actuation... I liked the design overall. I still prefer Holset's VNT/VGT mechanism, though... they have a LOT less moving parts than the Garretts...



Matt