Westfield 4.6 Rover V8 (VEMS EFI)
Car Spec
- 1997 Westfield Seight (S8)
- Big alloy radiator
- 4 Pot alloy billet front calipers with drilled & grooved discs
- 2 Pot alloy billet rear handbrake calipers
- Green Stuff Brake Pads
- Aluminium Front Wheel Hubs
- 3.92 rear 7ins ford LSD differential
- Ford Cosworth T5 gearbox
- Tilton Concentric Slave Cylinder
- Toyo R888 tyres (205x50x15)
- Protec alloy dampers all round (350lbs front & 275lbs rear)
- Westfield Sports Seats
- Westfield Contoured Dash
- Westfield Boot Box
- Westfield Hood
Engine Spec
- Rover V8 4600cc (S46D)
- Stage 4 cylinder heads
- Double Valve Springs
- Act Carbon Fibre Plenum (71mm inlet)
- Polished & ported 48mm inlet manifold
- Polished & ported 48mm trumpet base (Aluminium Shorted Trumpets)
- Thermal Plenum Spacer
- Piper 285 camshaft
- Billet Rocker Posts
- Steel rockers (Fed Mogel)
- Gems Roller Timing Chain
- Serpentine front end & oil Pump
- Modified Throttle Housing (71mm)
- Trap door lowered & Baffled sump
- Gems flywheel with rear pickup (36-1 trigger & 80deg BTDC)
- Magnecor 8mm plug leads
- Rhodes lifters
- Crane adjustable pushrods
- 220cc Bosch "Red Devil" Injectors
- 10.1 Compression Ratio
- Varley Red Top 30 Battery
- Poly Engine Mountings
Vems ECU Spec
- Genboard V3.3 (V1.2.38 Firmware)
- 400kpa map sensor
- 20x4 LCD dash display
- 4 wire stepper motor
- 1off Throttle Switch
- 2off knock sensors
- 1off MAT Sensor
- 1off Coolant Sensor
- 1off Cam Sensors (Hall)
- 1off Crank Sensor (VR)
- 2off Bosch lambda sensors (LSU4.2)
- 1off EGT thermocouple (type K)
- 4 coils (wasted spark)
- Bosch Fuel Injection Pump
- Bosch 3 Bar Fuel Regulator
- Oil Pressure Output
- Tachometer Output
- Vems External Memory Card
- External GPS Logging On 2nd Serial Port
- Bluetooth Adapter & Android App
Winter 2010 Upgrades included
- ACT carbon fibre plenum chamber, which required cutting & welding the original land rover GEMS efi throttle housing to an adpater plate to make it fit the plenum, so i could use the throttle switch and idle motor, this way the wiring was as my original aluminium plenum.
Picture here of welded & fitted item.
- next mod was to install & fit a GPS sensor to use for data logging to the VEMS ECU, i bought a evermore GM-700A reciever as this uses RS232 DB9 connection and outputs NMEA data, extactly what the VEMS needs, to power the unit i installed a PS2 connection in to the VEMS backplate.
Picture of wiring & GPS installation.
2011 Upgrades
- Installation of second knock channel (0) to ecu, as ecu came with only channel 1 installed and for V8 2 channels are required.
- Proper rolling road tuning (when engine has done enough miles) currently engine only done about 340miles since rebuild.
- Full camsync using either a modified front camshaft sporket or using orginial land rover GEMS efi sprocket.
2013 Upgrades
- Bosch "Red Devil" EV6 Injectors (220cc)
- Westfield Sports Seats
- Westfield Harnesses
2014 Upgrades
- Bluetooth serial adapter for mobile phone datalogging while driving.
2015-2018 Upgrades
- Top hatted Block
- Pocketed Pistons (Valve Cutouts)
- Full dynamic Engine Balance
- Ford Cosworth T5 Gearbox (Rebuilt)
- Westfield T5 Propshaft
- Tilton Concentric Slave Cylinder
- Tilton Clutch Master Cylinder
- Gems roller timing chain
- 10.1 Compression Ratio
- Cometic Head Gaskets
2018 and on
- Run new rebuilt engine & gearbox in for 500 miles, then look to proper tune ECU on rolling road for optimum performance.
More pictures can be found here.