A Quote from Digsy a very knowledgeable design Engineer over on mkivsupra.net
So I currently have a 35gpm electric pump - 2100 U.S gallons per hour, or 1749 UK Gallons per hour pump - quite short of the oem spec using Digsy's Calculation
However there is a point were the oem spec pump becomes inefficient at high flow although not enough to cavitate as there has been no evidence that I've heard of in the last 4years, also at lower rpms the flow will not be as high as the electric constant flow pump, I have installed the pump to do away with as much parasitic drag and give me more cooling control especially trackside where I can have the pump flowing - even whilst the engine is off
My Car is far from BPU now - here is the spec
Engine Specifications:
OEM Engine Internals
GReddy Chrome Oil Filler Cap
GReddy Sandwich Plate
GReddy Oil Filter Relocation Kit
HKS Oil Cooler
TRD Oil Filter
TRD Engine Mounts
Aeromotive FPR
Unorthodox Racing Pulley Kit
Virtual Works Power Steering Relocation Kit
Turbocharger & Induction:
Garret GT35R
PHR Air Intake Kit
GReddy 3Row FMIC
HKS Racing BOV Type II
FULL RACE Gen 2 Manifold
2xTial 44mm wastegates
4" FULL RACE Downpipe/Midpipe
Fuel, Tuning & ECU:
Motec M600 EMS, with Wideband Lambda, Advanced Functions and Data logging
HKS EVC 6
HKS DLI
PHR Stage 1 Fuel System
PHR Oil Feed/Return
PHR Water Cooling Kit
Exhaust:
4" HKS Hyper Titanium Racing Exhaust
Cooling:
Fluidyne Radiator
GReddy 1.3Bar Rad Cap
Maziere Electric Water Pump
AAP Motorsport Electric Fans
TRD Thermostat
GReddy Upper Rad Pipe
Titan Motorsport Lower Pad Pipe
Drivetrain:
6Spd Manual
RPS Street 6 Puk Clutch
RPS Cyn-r-g Lightweight Flywheel
Weight Reduction & Transfer:
Shift Sports FRP Lightweight Hood
Seibon Carbon Fibre Doors
Seibon Carbon Fibre Fenders
Abflug Type 1 Nosecone
Completely Stripped, Battery Relocation, Air Con Removed, Water Pump Removed Radiator Overflow Tank Relocated, 5L Washer Bottle Removed,
Suspension, Wheels, Tires & Brakes:
HKS Hiper D Adjustable Coilover Suspension
TRD Sway Bars
Cusco 6 Point Rollcage
Cusco Front and Rear Strut Bars
Do-Luck Underfloor Bars
Do-Luck Cross Chasis Bar
Uprated Front Discs
Axis Milano 19" - Currently speccing wheels now - either 17's or 18's with as close to stock offset as pos - must be light!
GoodYear Eagle F1's
285/35/19 Rear 255/35/19 Front
Interior & ICE:
6 x Defi Bf's
AEM A/F Ratio Gauge
HKS EVC 6 Display
2 x Recaro Pole Positions (FIA Approved)
Recaro Fixed Side Mounts
Exterior:
OEM Skirts
OEM Rear Spats
De-Winged