GRM S5000 User manual

V2.2 4/3/2020
S5000
User Guide

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2
TABLE OF CONTENTS
1 CUSTOMER SERVICE CONTACT...........................................................4
1.1 Technical Support ......................................................................... 4
1.2 GRM Workshop ............................................................................. 4
2 OVERVIEW.........................................................................................5
2.1 General Dimensions ...................................................................... 5
2.2 Baseline Set-Up ............................................................................ 6
2.3 Chassis Identification .................................................................... 7
3 CAR CHARACTERISTICS.....................................................................8
3.1 A - ENGINE .................................................................................. 8
3.1.1 General Information................................................................. 8
3.1.2 Engine Power Curve ................................................................. 8
3.1.3 Engine Identification ................................................................ 9
3.2 B - ENGINE SYSTEMS .................................................................. 10
3.2.1 Cooling System ..................................................................... 10
3.2.2 Oil System ........................................................................... 10
3.2.3 Intake System ...................................................................... 11
3.2.4 Exhaust System .................................................................... 11
3.2.5 Fuel System ......................................................................... 11
3.3 C - TRANSMISSION ..................................................................... 12
3.3.1 Clutch ................................................................................. 12
3.3.2 Transmission ........................................................................ 12
3.3.3 Lubrication ........................................................................... 13
3.3.4 Pneumatic Gear selection system ............................................. 14
3.3.5 Differential ........................................................................... 14
3.3.6 Driveshaft ............................................................................ 14
3.4 D - WARM UP PROCEDURE ........................................................... 15
3.5 F - FRONT AND REAR SUSPENSION ............................................... 16
3.5.1 Overview ............................................................................. 16
3.5.2 Set-Up Adjustments ............................................................... 17
3.5.3 Front Suspension Geometry adjustment .................................... 17
3.5.4 Front Anti-Roll bar ................................................................. 18
3.5.5 Front Spring ......................................................................... 19
3.5.6 Rear Suspension Geometry adjustment ..................................... 20
3.5.7 Rear Anti-Roll bar .................................................................. 20
3.5.8 Rear Spring .......................................................................... 22

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3.5.9 Front and rear Dampers ......................................................... 24
3.6 G - STEERING ............................................................................ 25
3.7 H - BRAKING.............................................................................. 25
3.7.1 Brake Systems ...................................................................... 25
3.7.2 Brake Actuation .................................................................... 26
3.8 I - WHEELS AND TYRES ............................................................... 27
3.8.1 Wheels ................................................................................ 27
3.8.2 Wheel Nuts .......................................................................... 27
3.8.3 Tyres ................................................................................... 27
3.9 J - AERODYNAMIC ....................................................................... 29
3.9.1 Front Wing ........................................................................... 29
3.9.2 Rear Wing ............................................................................ 29
4 ELECTRICAL SYSTEM........................................................................31
4.1 Overview ................................................................................... 31
4.2 Power Circuit ............................................................................. 31
4.3 Fire Extinguisher ......................................................................... 32
4.4 Radio Connections ...................................................................... 33
4.4.1 Radio to Car Connection ......................................................... 33
4.4.2 Helmet to Car Connection ....................................................... 33
5 ELECTRONICS ..................................................................................34
5.1 User Interface ............................................................................ 34
5.1.1 Steering Wheel ..................................................................... 34
5.1.2 Control Panel ........................................................................ 35
5.1.3 Dashboard ........................................................................... 36
5.1.4 Dash Alarms ......................................................................... 38
6 DATA LOGGER..................................................................................39
6.1 Channel List ............................................................................... 39
7 FLUIDS ............................................................................................40
8 CAR MAINTENANCE..........................................................................41
9 THIGHTENINGS................................................................................41

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1CUSTOMER SERVICE CONTACT
1.1 TECHNICAL SUPPORT
Name Email Phone
Stefan Millard [e-mail] [phone]
1.2 GRM WORKSHOP
Website grmotorsport.com.au
E-Mail [e-mail]
Phone [phone]
Address
Factory 2
13 Kitchen Road
Dandenong South VIC 3175

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2OVERVIEW
2.1 GENERAL DIMENSIONS
Specific Dimensions (Refer to Homologation Document)
Wheelbase 3090mm
Front Track 2020mm MAX
Rear Track 2020mm MAX
Power 560hp Maximum
Total Weight (Kerb no fuel) 850kg
Fuel Tank Capacity 62L
THE S5000 IS AN EXTREMELY HIGH-PERFORMANCE VEHICLE FIT FOR USE ONLY AT CONFEDERATION OF
AUSTRALIAN MOTORSPORT LICENSED FACILITIES.
IT IS THE RESPONSIBILITY OF THE OPERATOR (THIS MAY OR MAY NOT BE THE DRIVER) TO ENSURE THE
VEHICLE IS FIT FOR PURPOSE AND SAFE TO OPERATE.
ROGERS ENGINEERING AND DEVELOPMENT SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGE OR INJURY TO PERSONS OR PROPERTY THAT MIGHT BE CLAIMED AS A RESULT
FROM THE OPERATION OF THE VEHICLE, INSTALLATION, IMPROPER INSTALLATION AND FAILURE OF PARTS
INCLUDING CLAIMS FOR DELAY, LOSS OF PROFITS OR LABOUR. THERE ARE NO WARRANTIES EXPRESSED OR
IMPLIED.

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2.2 BASELINE SET-UP
This is a general Baseline Set-Up recommended by GRM. It is intended to be tuned track to track.
Geometry
Front
Rear
Ride Height*
[mm]
28
55
Camber
[deg]
-3
-1.6
Castor
[deg]
5.1
-
Toe
[mm]
1.5 OUT
1.5 IN
Anti-Dive+
[%]
20
-
Anti-Lift+
[%]
-
112
Anti-Squat+
[%]
-
-1
Roll Centre+
[mm]
71
80
Suspension
Springs
[lbs/in]
700
1200
Preload**
[Turns]
5
4
Bump Rubber+
[Multimatic]
1x Blue
2x Red
Mandatory Packer+
[mm]
15
7
Additional Packer
[mm]
10
0
Damper
[LSR clicks]
-5
-5
[HSR sweeps]
+5
+5
ARB Setting
[hole;mm]
4
5
Aero
Main Element
[deg]
-
4
Secondary
[set;deg]
E5
29.5
*Measured from the bottom surface of the Plank extended to each axle centreline (not including 5mm skid block).
**0 Turns of preload is right at the point where the spring is no longer loose on a fully extended damper.
+
For information only, not adjustable

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2.3 CHASSIS IDENTIFICATION
Each Tub has a Manufacturer identification plate bonded to the inside of the cockpit on the LHS of the steering
wheel.
And a Constructor identification plate is also bonded to the inside of the cockpit on the RHS of the steering
wheel.

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3CAR CHARACTERISTICS
3.1 A - ENGINE
3.1.1 GENERAL INFORMATION
3.1.2 ENGINE POWER CURVE
45
50
55
60
65
70
75
80
85
90
95
100
3500 4000 4500 5000 5500 6000 6500 7000 7500 8000
%
RPM
HP TQ
Engine Information
Type V8 Naturally Aspirated
Capacity 5200 cm3
Bore & Stroke 94 x 93 mm
Maximum Speed 8000rpm
Cooling System Water without thermostat
Fuel Unleaded 98 RON
Lubrication Dry Sump
Engine Management Motec M150

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3.1.3 ENGINE IDENTIFICATION

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3.2 B - ENGINE SYSTEMS
3.2.1 COOLING SYSTEM
The car is equipped with two water radiators, one water/oil heat exchanger for the engine oil and a separate
transmission cooling system with a single radiator. A mechanically driven water pump generates the circulation
for the engine coolant.
The coolant capacity is approximately 14L including a maximum of 1.0L of Coolant concentrate, with the level
set by bleeding the system.
While adding coolant mixture to the Header tank, bleed air firstly from the disconnected fitting at the top of the
LH radiator.
Once air has finished escaping from the top of the LH radiator reconnect the fitting and then bleed air from the
disconnected fitting at the top of the RH radiator.
Once air has finished escaping from the top of the RH radiator, reconnect the fitting and continue filling the
system until the header tank/swirl pot is approximately ¾ full when engine is cold.
The maximum coolant temperature must not exceed 100oC.
3.2.2 OIL SYSTEM
The engine has a dry sump oil system with the oil tank located in the bell housing between the engine and the
transmission. The oil level must be checked using Dipstick Part# GRM-AW0470-00 and the oil level maintained
between the minimum and maximum indicators on the dipstick. The oil capacity at the maximum indicator
mark is approximately 8.0L. Oil level must be kept above the minimum mark.
Oil Filter P/N: K&N HP-2010

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Below 50oC engine oil temperature the engine management system limits the maximum engine speed to
2500rpm. The maximum oil temperature must not exceed 120oC.
3.2.3 INTAKE SYSTEM
The custom inlet manifold with individual butterfly throttles on each cylinder intake trumpet is enclosed within
an air box fed through a K&N air filter. Care must be taken when the air filter is removed to not let anything
‘fall into’ the air box.
Air Filter P/N: K&N 33-2116
3.2.4 EXHAUST SYSTEM
The custom exhaust system consists of a pair of 4 into 1 exiting through a pair of rear mounted mufflers. It is
important to ensure all mounts and heat shields are maintained and no contact occurs between the exhaust and
any bodywork.
3.2.5 FUEL SYSTEM
The car is equipped with a 62L foam filled ballistic fuel bladder to FIA FT-3 specification housed within the
carbon tub. A single electric high-pressure fuel pump located at the bottom of the fuel bladder feeds the engine
through an internal pressure regulator.
The pressure regulator is set at 56psi. If the recorded fuel pressure is less than 45psi at any time during
normal vehicle operation notify GRM Technical Support.
Filling of the fuel bladder must be done slowly through the dry break on the fill tube via an external off vehicle
pump.
To drain the fuel, disconnect the dry break on the fuel line from the fuel tank top cover. While ensuring the
safe containment of any exiting fuel, operate the high-pressure fuel pump using the fuel pump switch on the
switch panel in the cockpit.

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3.3 C - TRANSMISSION
3.3.1 CLUTCH
The car is fitted with a Tilton Carbon/Carbon Clutch.
Information
Type Carbon/Carbon
Make Tilton
Clutch bearing Hydraulic
Master Cylinder Tilton 0.75”
Fluid Valvoline VR1
Between the clutch master cylinder and the clutch is a valve mounted on the tub inside the cockpit. LEAVE AT
THE FACTORY SETTING – FULLY OPEN.
The clutch activation point is to be set between 6 and 7mm off the clutch pedal stop on the pedal box. The
setting procedure is as follows:
•Fully depress the clutch pedal until the clutch stop is engaged.
•Release the clutch pedal until the rear wheels can just not be turned.
•Measure from the clutch stop to the bolt on the clutch pedal.
•Repeat this process.
•Ensure both measurements are between 6 & 7mm.
•If this measurement cannot be achieved the clutch must be inspected and re-shimmed as necessary.
•During engine run up there is a Dash page to check clutch activation.
3.3.2 TRANSMISSION
The car is fitted with a Holinger MFT-S5000 gearbox incorporating rear suspension pickups, integral bell
housing with engine oil tank, limited slip differential and pneumatic paddle gear selection.
A set of drop gears sit between the engine and the gearbox. This pair of gears are in their own oil chamber,
separate from the gearbox, and require INDEPENDENT filling and draining.
The gearbox and the differential are sealed.
The gear diagram is below.

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3.3.3 LUBRICATION
The gearbox has an integral oil pump and filter and an external radiator for cooling the oil. The filter cartridge
O-Ring is 65x2.5 NBR and the filter is a Ryco 2605P.
The gearbox is filled via the access cap on top of the unit.
The oil level is set to the bottom of the RH level plug.
When filled from dry, and after the first transmission run up, the oil level will need to be topped up to the
correct fill level. The capacity is approximately 3.5L.
The drop gear oil level is INDEPENDENT OF THE GEARBOX and is filled through the temperature sensor hole.
The oil level is to the bottom of this fill hole and the oil capacity is approximately 0.5L.
The transmission should be above 60oC before it is operated in racing conditions. The maximum oil
temperature must not exceed 130oC at the drop gears and 120oC at the gearbox. If these maximum
temperatures are reached or exceeded, at a minimum the oil must be changed.

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3.3.4 PNEUMATIC GEAR SELECTION SYSTEM
The car is equipped with a pneumatic gear selection system operated by two paddles on the steering wheel. To
select a higher gear, the RH paddle is operated, to select a lower gear, the LH paddle is operated.
There is a pneumatic compressor located in the RH side pod, with an air accumulator/tank located between the
cylinder heads on the engine. The gear selection barrel in the gearbox is operated by externally mounted
Pneumatic Solenoid Valves.
The Ignition switch must be ‘On’ to allow gear selection.
The Pneumatic Solenoid Valves remain maintenance free. Please avoid removing the Solenoid Values, opening
the air line between the Solenoid Block and air tank/compressor as any dust or foreign objects in the system
will reduce performance.
If any pneumatic gear selection issues occur refer to GRM Technical Support. If any maintenance work is to be
carried out, the system must be depressurised before commencing. This is achieved by operating the Pressure
Relief Valve at the air tank.
At the end of each day, please depressurise the system using the Pressure Relief Valve at the air tank. This will
reduce the stress on the components when not in use.
3.3.5 DIFFERENTIAL
The Holinger MFT-S5000 transmission is fitted with a conventional ramp activated multi-plate clutch limited slip
differential.
There is no preload on the friction faces.
The differential is non-adjustable and is sealed in the transmission.
3.3.6 DRIVESHAFT
The driveshaft M10 mounting bolts are to be tightened to 50ftlbs WITHOUT Loctite.
Please ensure that the driveshafts are mounted in a consistent direction over their lifetime. This will reduce the
stress in the shaft and prolong mileage.

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3.4 D - WARM UP PROCEDURE
For the first engine run after an Engine, ECU, Throttle Pedal Sensor replacement, or any adjustments made to
the pedal box please contact GRM technical support as the following cannot be done by the customer:
•Change ECU parameters
•Calibrating the throttle pedal sensor
•Calibrating the throttle servo
CAUTION - When the engine is not running, the starter motor will function when the vehicle is in Gear.
This warmup procedure must be done while the car is safely isolated and secured with its rear wheels off the
ground.
Engine crank procedure to prime the oil pressure
-Connect Auxiliary Battery
-Master Switch On, Ignition Off
-Ensure Neutral is selected
-Press and maintain the Start button until some engine oil pressure is present
-Once oil pressure is established the engine is ready to run
This procedure needs to be carried out after an oil change, or after the engine has not run for more than four
hours.
Running the engine
-Auxiliary Battery connected
-Master Switch On, Ignition Off
-Ensure Neutral is selected
-Ignition On
-Ensure fuel pressure is present on ignition activation
-Press the Start Button
-Check the coolant level in the header tank/swirl pot (approximately ¾ full when engine is cold)
-Ensure there are no fluid or air leaks
-During the first engine run of the day the gearbox must be run through all gears
-With the engine running, to exit neutral, the clutch must be depressed
-With the engine running, to select reverse, while in neutral the down paddle must be active for 2
seconds
-Warm the engine until the water temperature reaches 90oC
Checks
After the engine warm up:
-Check the engine oil level on the dipstick before oil drains back into the sump
-Check the gearbox and drop gear oil levels
-Ensure there are no fluid leaks
-Download and check the data from the warmup
-Disconnect the Auxiliary Battery before driving the vehicle

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3.5 F - FRONT AND REAR SUSPENSION
3.5.1 OVERVIEW
The S5000 has unequal length double wishbone front suspension with coil over dampers and adjustable anti-roll
bar actuated by a pushrod and rocker mechanism. Steering is achieved through a non-power assisted rack and
steering arms controlling the toe angle.
The rear suspension of the S5000 is unequal length double wishbone with an upper toe link to control toe
angle. As with the front suspension, the rear coil over dampers and adjustable anti-roll bar are actuated by a
pushrod and rocker mechanism.
There is only a single spring and damper per wheel, there is no third element or interconnection between front
and rear suspensions. In addition to the coil over spring, each damper has a bump rubber and packer system.

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3.5.2 SET-UP ADJUSTMENTS
Effects of the adjustments on the car’s set-up.
Front Rear
Ride Height Pushrod adjuster mm/turn 5.55 5.75
mm/flat 0.92 0.95
Spring
Preload Spring platform
Thread step [mm] 1.41 1.41
Ride Height change*
[mm/turn]
1.57 1.95
Camber Shim deg/mm 0.269 0.197
Toe Steering arm/toe link
adjuster
mm/flat 1.71 0.90
deg/flat 0.26 0.14
Castor Lower wishbone rod end deg/turn
Motion Ratio Wheel/Spring 1.115 1.38
Wheel/ARB 1.533 1.015
*No Ride Height change when car is already in full droop
3.5.3 FRONT SUSPENSION GEOMETRY ADJUSTMENT
Camber adjustment for the front suspension is achieved by adjusting the thickness of the shims (in purple) on
the upright as illustrated in the picture below and overall dimensions of the bottom wishbone.

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3.5.4 FRONT ANTI-ROLL BAR
The front anti-roll bar is actuated by movement of each front upright via a pair of pushrods, rockers and drop
links.
A single front anti-roll bar is specified. The stiffness can be adjusted by changing the connection position of the
two drop links.
Front ARB rate
Position* 1 2 3 4 5 6 7
N/mm 99 111 126 143 165 191 225
*FARB hole settings start at the top hole being position 1 and increasing in number/rate as the adjuster is
moved down.
0
50
100
150
200
250
1234567
Stiffness [N/mm]
Blade position [hole]
Front ARB rate

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3.5.5 FRONT SPRING
Three sets of front springs used in a coil-over configuration are available.
Front Springs
Reference Stiffness
GRM-CE0037 600 lbs/in
GRM-CE0038 700 lbs/in
GRM-CE0039 800 lbs/in
The following packers can be used to tune the overall solid packer set.
Optional Solid Packer
Reference Thickness
GRM-AF0487 1mm
GRM-AF0488 2mm
The front bump rubber and packer system is shown in the following picture.
Front Bump Rubber rate
Disp. [mm] 0 1 2 3 4 5 6 7
1xBLUE
[N/mm]
0.0 9.8 29.4 50.4 61.1 71.8 89.4 140.1

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3.5.6 REAR SUSPENSION GEOMETRY ADJUSTMENT
Camber adjustment for the rear suspension is achieved by adjusting the thickness of the shims on the upright
(in purple) as illustrated in the picture below and overall dimensions of the top and bottom wishbones.
3.5.7 REAR ANTI-ROLL BAR
The rear anti-roll bar is actuated by movement of each rear upright via a pair of pushrods, rockers and drop
links.
A single rear anti-roll bar is specified. The stiffness can be adjusted by changing the connection position of the
two drop links.
0
20
40
60
80
100
120
140
01234567
Stiffness [N/mm]
Displacement [mm]
Front Bump Rubber rate