Joined
·
8,804 Posts
with a lot of investigation of my turbos, it looks like they are in stock sized housings, very new looking, and so far as I can tell, the turbines are steel. The bearings are for sure journal-type.
I'll get the numbers off the Garrett housing, that might help explain what exactly I've got to you turbo experts (which I am clearly not!!), but in theory, if you have a stock turbo (inlet, vane angle, and whatever all those other measurements are) but it's steel instead of ceramic, to what bar of boost can you push them? 1.4bar (the point where ball-bearing N1s run out of steam)?
Ball-bearings are better than journal-type, as the conventional wisdom goes, but they're more sensitive to oil supply? Is there anything on the upside regarding journal bearnings?
I'll get the numbers off the Garrett housing, that might help explain what exactly I've got to you turbo experts (which I am clearly not!!), but in theory, if you have a stock turbo (inlet, vane angle, and whatever all those other measurements are) but it's steel instead of ceramic, to what bar of boost can you push them? 1.4bar (the point where ball-bearing N1s run out of steam)?
Ball-bearings are better than journal-type, as the conventional wisdom goes, but they're more sensitive to oil supply? Is there anything on the upside regarding journal bearnings?