Courtesy of Tyler from Turbonetics:
The thrust spring is used when the bronze thrust bearing is not bolted down to the bearing housing. In most 360 deg. thrust bearing turbos the thrust bearing itelf gets bolted by three small screws down to the bearing housing. The dynamic thrust collar rides on a film of oil on the ramps of the thrust bearing and that is what absorbs the compressor side thrust loading.
In a standard 270 deg. bearing turbo the thrust spring is used to keep the thrust bearing in place against the bearing housing.
__________________
2004 Nissan Titan SE KC 4X2: AEM Brute Force Intake, NISMO Exhaust, NISMO Shock Kit, PRG Upper Control Arms, PRG Sway Bar Endlinks, PRG LCA Spacers, Eagle Alloy 17x8, Nitto Terra Grappler 295/75/17, Alpine iXA-W404, Apline Power Pack, Apline KCE-400BT, Alpine Imprint, Alpine Type-R Door Speakers, US Amps USA-400, JBL GTO0804
2004 Nissan 350Z: Turbonetics Stage 1 Turbo System, Apexi WS2, HKS LS+ Coilovers with Swift Springs, Hotchkis Sway Bars, NISMO LSD, NISMO Diff Cover, ACT Clutch, JWT Flywheel, GSpec Short Shifter, Hawk HPS pads, Blitz Upper Raditor Hose, Motordyne 5/16" Plenum Spacer, Volk LE37T 19x8.5 and 19x10.5, Blitz FATT DCIII
|