Originally Posted by HighPSI TSi Guy

no they aren't

GT series is just another set of parts that's a bit newer than the old school stuff.. you can put a ball bearing center section on any of them, just GTs are the setups you hear about people doing it with most

Originally Posted by mpg9999

The R denotes ball bearing. For example, a GT28RS has a ball bearing center section.

Originally Posted by HighPSI TSi Guy

correct... but there are plenty of GT setups that aren't "R"

Originally Posted by HighPSI TSi Guy

no they aren't

GT series is just another set of parts that's a bit newer than the old school stuff.. you can put a ball bearing center section on any of them, just GTs are the setups you hear about people doing it with most

Originally Posted by Garrett

All Garrett GT turbos are the standard by which all others are judged. The cartridge assembly is a Garrett-patented full floating dual row ball bearing configuration. The major benefit of this design is that the mechanical efficiency of the complete rotating assembly is greatly improved by the fully supported ball bearing system, due to substantially lower frictional losses. The result is faster spool up and quicker transient time to boost response. The full ball bearing angular displacement designed cartridge assembly also provides greatly increased thrust load capacity over that of conventional thrust bearing systems. In certain high thrust load long term durability test conditions the full ball bearing system exhibited over three times the thrust load capacity of a conventional bearing system.

Originally Posted by BlackSRT4

their is no way a stock turbo spools until 3k.... well im not stock anymore but im pretty sure that a second gear punch in my car before i had instant boost. now, if you punch it in 4th or 5 gear then 14psi might be achieved by 3k.