Bill,
I got the info you were looking for directly from the top. Below is a detailed explanation of the differences from the GM of Turbonetics (who also happens to be an expert on the turbo build process).
Quote:
The actual oil flow measuring equipment in the VSR is presented on the digital display screen of each unit that is tested and is very accurate but also very sensitive to oil temperatures and viscosity index. The oil temperature once the VSR has been running through the day self regulates to maintain around 35(°C) and at this point will produce the maximum oil flow readings.
We use the oil flow monitoring simply as an additional confirmation that the bearing/housing clearances are not too great as the increased oil flow or volume can mask potential balance issues, this is not the case with low oil flow.
The maximum oil flow guideline for our ceramic ball bearing turbochargers in the family size the customer has is 41 mL/sec or .65gpm and based on the pictures of the VSR tags supplied the customers units are significantly lower with the higher of the two at 23.62 mL/sec.
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Let me know if this answers your questions.
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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
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