Stack ST8150 Installation and operating instructions

ST542040-003
ST8150 Boost Gauge
Display System
User’s Guide Addendum

STACK ST8150 Display System Preface
User Guide Addendum iii
Preface
Congratulations
Congratulations on choosing the Stack ST8150 Rally Turbo Display
System. This system will give you a wealth of information to enable you
to obtain the maximum safe performance from your vehicle.
Purpose of this addendum
In conjunction with the ST8100 User Guide, this addendum will help you
install and use the Stack ST8150 Display System. It explains how to set
up and configure the system for your vehicle.
Edition Notice
This edition is for all versions of the ST8150 Display System distributed
to customers world wide. The units of measurement used to illustrate
the use of the Display System in this edition are for the UK version.
Units used in the various versions are shown in the following table.
Parameter Type UK Version US Version EC Version
Boost N/A N/A Bar
Temperature N/A N/A Degrees C
Pressure N/A N/A Bar
Stack is a registered trademark of Stack Limited.
Information in this publication is subject to change without notice and does not
represent a commitment on the part of Stack Limited. No responsibility is accepted for
error or omission.
Copyright 2000 Stack Limited
United Kingdom Telephone Numbers:
Sales: 01869 240404.
Technical Support: 01869 240420

Preface STACK ST8150 Display System
iv User Guide Addendum
Fax: [phone]

STACK ST8150 Display System Preface
UserÆs Guide Addendum v
Contents
PREFACE III
CONTENTS V
Chapter 1. Introducing the Display System 1
How to Use this Manual 2
Chapter 2. Getting Started 3
Wiring Harness 4
Chapter 3. Operating the Display System 5
Changing the display layers 5
Peak Values (Tell Tales) 7
Alarms 8
Chapter 4. Configuring the Display System 9
Configuration mode 9
Chapter 5. Installing the Display System 12
Boost Pressure sensor 12
Exhaust Gas Temperature Sensor 12
Chapter 6. Troubleshooting 13
Appendix B. Wiring Harness Schematic Diagram 14
Index 15

STACK ST8150 Display System Chapter 1. Introducing the Display System
User Guide Addendum 1
Chapter 1. Introducing the Display System
The Stack ST8150 Display System monitors and displays a range of
values, known as performance parameters, needed for effective car and
driver management in most competitive situations.
The system combines an analogue Boost Gauge with a digital display for
the following performance parameters:
1. Exhaust Gas Temperature
2. Oil pressure
3. Oil temperature
4. Water temperature
5. Fuel pressure
6. Battery voltage
You can view the peak values (tell-tales) for all the parameters.
The system provides a range of warning messages based on preset
alarm values for the following performance parameters:
1. Exhaust Gas temperature
2. Oil pressure
3. Oil temperature
4. Water temperature
5. Fuel pressure
6. Battery voltage
You can enable or disable the warning system for each parameter
individually.

Chapter 1. Introducing the Display System STACK ST8150 Display System
2User Guide Addendum
You can redefine the preset alarm value for each parameter to a value
that is more suitable for your vehicle.
The system provides a gear shift warning light that is based on an RPM
value that you define for your vehicle.
How to Use this Manual
Stack recommends that you unpack and connect the components in the
system before you install it in your vehicle. This will enable you to
familiarise yourself with operating the display and configuring it for the
vehicle in which you intend to install it.
Please use the ST8100 User Guide to install the system, referring to the
corresponding section in this addendum to see whether there are special
requirements for the ST8150 system.

STACK ST8150 Display System Chapter 2. Getting Started
User Guide Addendum 3
Chapter 2. Getting Started
The sensors supplied with the ST8150 system differ from those supplied
for the ST8100.
ST8150 Display System Items
The ST8150 Display System is supplied with the following standard
components:
Quantity Description
1Display Module (ST867 ) with 2 mounting brackets
1Wiring Harness (ST872)
1Oil Pressure Sensor (ST744, ST745)
1Fuel Pressure Sensor (ST741, ST 742, ST744, ST745)
2Temperature Sensors (ST762, ST764)
1Boost Sensor (ST453)
11.4 Mtr Extender (918021)
1Exhaust Gas Temperature Interface (ST464)
4Switches (supplied with and to be connected to the wiring
harness)
Optional ST8150 Display System Items
The ST8150 Display System can be used with the following optional
components:
Quantity Description
1RPM Sensor (ST696 Opto Isolator or ST697 H.T. Pick-up)
1External Gear Shift Warning Lamp
1External Alarm Warning Lamp

Chapter 2. Getting Started STACK ST8150 Display System
4User Guide Addendum
Wiring Harness
The ST8150 harness is slightly different to that of the ST8100.
Labels on short cables Connection To
S1 to S4 Switches 1 to 4
(WS) Boost Pressure sensor (ST453)
LAP N/A
SL Gear shift warning light
AL Alarm warning light
NET Data logging expansion pack
Labels on Long Cables: Connection To
ES Engine Speed (RPM)
OT Oil temperature sensor
WT Water temperature sensor
OP Oil pressure sensor
FFuel pressure sensor
AAuxiliary Channel
EGT Interface (ST464)
B + Battery Positive
B - Battery Negative (Earth)

STACK ST8150 Display System Chapter 4. Configuring the Display System
User Guide Addendum 5
Chapter 3. Operating the Display System
The operation of the ST8150 is basically the same as that of the
ST8100. This section highlights any differences.
Changing the display layers
The ST8150 system has three display layers. These differ significantly
from those of the ST8100 and their layouts are shown below.
Each of the display layers can be displayed in turn by pressing switch 3.
Press switch 3 when displaying layer 3 to return to display layer 1.
The format of the values in these displays will vary for systems
supplied outside the UK, as the parameters are displayed in
different units.
Display Layer 1
Display layer 1 shows:
•Water Temperature (WATER)
•Oil temperature (OIL T)
•Exhaust Gas Temperature (EGT)
•Oil Pressure (OIL P)
Press Switch 3 to see display layer 2.

Chapter 4. Configuring the Display System STACK ST8150 Display System
6User Guide Addendum
Display Layer 2
Display layer 2 shows:
•Fuel Pressure (FUELP)
•Oil Temperature (OIL T)
•Battery voltage (BATT)
•Oil Pressure (OIL P)
Note: The fuel pressure is displayed as 0.1 PSI
Press Switch 3 to change display to layer 3
Display Layer 3
Display layer 3 shows:
•Fuel Pressure (FUELP)
•Engine Speed (RPM)
•Exhaust Gas Temperature (EGT)
•Oil Pressure (OIL P)
Press Switch 3 to display layer 1 again.
Chapter 4. Configuring the Display System. The number
displayed is Gauge Pressure, where atmospheric is 0,
boost shows as positive and vacuum as negative numbers.
Due to atmospheric variations, the display may not show
exactly 0.00 when the engine is stationary.

STACK ST8150 Display System Chapter 4. Configuring the Display System
User Guide Addendum 7
Peak Values (Tell Tales)
The system stores either a maximum or a minimum value as the peak
value, depending on the parameter, as follows:
Parameter Type of Peak
Value Gated to RPM
Oil Temperature Maximum Yes
Water Temperature Maximum Yes
Oil Pressure Minimum Yes
Fuel Pressure Minimum Yes
Battery Voltage Minimum Yes
Boost Pressure Maximum Yes
Exhaust Gas
Temperature Maximum Yes
Resetting the Peak Values
The peak values for the channels will reset as follows:
Parameter New Peak Value
Boost Pressure -99.9 Bar
Oil Pressure 999 PSI
Fuel Pressure 999 PSI
Oil Temperature 0C
Water Temperature 0C
Exhaust gas Temperature -99C
Battery Voltage 26.0V

Chapter 4. Configuring the Display System STACK ST8150 Display System
8User Guide Addendum
Alarms
The ST8150 Display System has the following built-in alarms:
Parameter Alarm is triggered
when the: Gated to RPM
Oil Temperature current value exceeds
the preset value Yes
Water Temperature current value exceeds
the preset value Yes
Oil Pressure current value drops
below the preset value No
Fuel Pressure current value drops
below the preset value Yes
Battery Voltage current value drops
below the preset value No
Boost Pressure current value exceeds
the preset value Yes
Exhaust Gas
Temperature current value exceeds the preset value Yes

STACK ST8150 Display System Chapter 4. Configuring the Display System
User Guide Addendum 9
Chapter 4. Configuring the Display System
Configuration mode
The list of configurable parameters has changed significantly from that
of the ST8100. Please note that the settings for the 30PSI/150PSI
FUELP SENSOR (2BAR/10BAR for EC) must match the sensor fitted or
incorrect readings will be shown.
Configurable
Parameter
Setting Required Switchable
Parameter
E.S.Cylinders Number of cylinders in engine (for RPM) Not
Applicable
GATE RPM Minimum RPM for the Fuel Pressure, Oil
Temperature and Pressure, and Water
Temperature warnings to operate.
Yes
LOG RPM RPM at which the logging option is started. No
SHIFT RPM RPM at which gear shift light is to come on Yes
HIGH WATER Maximum water temperature alarm Yes
HIGH OIL T Maximum oil temperature alarm Yes
LOW FUEL P Minimum fuel pressure alarm Yes
LOW OIL P Minimum oil pressure alarm Yes
LOW BATT Minimum battery voltage alarm Yes
HIGH BOOST Maximum boost pressure alarm Yes
HIGH EGT Maximum EGT alarm Yes

Chapter 4. Configuring the Display System STACK ST8150 Display System
10 User Guide Addendum
Setting or resetting configuration values
Use Switch 1 to decrease the value being configured and Switch 2 to
increase it. The rate at which the value increases or decreases itself
increases while the switch is being held down. Example of the displays
for each of the configuration items are shown below.
Engine speed cylinders:
Gate RPM:
Logging RPM:
Shift RPM:
High water temperature:
High oil temperature:

STACK ST8150 Display System Chapter 4. Configuring the Display System
User Guide Addendum 11
Low fuel pressure:
Low oil pressure:
Low battery voltage
High boost pressure
High exhaust gas temperature:
Switching Alarms on or off
You can be enable (switch on) or disable (switch off) each of the alarm
warnings by pressing and holding Switch 1 and then pressing Switch 2.
Note that you may change the preset value of the parameter slightly
while pressing both switches. This does not matter when switching an
alarm warning off and, if necessary, you can correct the preset value
after you switch it on again.
Leaving configuration mode
When you wish to return to the normal display, press Switch 4.

Chapter 4. Configuring the Display System STACK ST8150 Display System
12 User Guide Addendum
Chapter 5. Installing the Display System
Boost Pressure sensor
Fitting the Boost Pressure sensors
The Display System is supplied with a ST453 (0-3.5Bar) sensor. Please
refer to the installation instructions supplied in the sensor package
Exhaust Gas Temperature Sensor
As well as the ST76x sensors supplied for Oil and Water temperatures,
the ST8150 Display System is also supplied with an ST464 sensor
interface for connection to a customer supplied K Type Thermocouple
mounted for Exhaust Gas temperature monitoring.

STACK ST8150 Display System Chapter 5. Installing the Display System
User Guide Addendum 13
Chapter 6. Troubleshooting
Use this table in conjunction with the ST8100 manual.
No. Symptom Possible Cause Remedy Notes
1Boost shows -
9.99 (Bar) or -
99.9 (psi)
ST453 sensor
disconnected Reconnect
Faulty connections Check connections Refer to harness
diagram
ST453 faulty Return for service
2Boost shows
0.00 (Bar) or 0.0
(psi)
approximately
ST453 not
connected to
intake correctly
Check hose and
fittings
3Boost display
incorrect or
inaccurate
Units (PSI/Bar) set
wrongly Modify setting 1 Bar is about 14.5 psi
4EGT Display gives
a fixed
temperature
reading of 999°C
EGT sensor has
failed Replace sensor Disconnect sensor. If
reading changes
to -99, replace
sensor
Faulty sensor
connections Check continuity of sensor leads Otherwise check harness for short
circuit
5EGT Reading
gives Sensor has failed Replace sensor
Itermittent
readings Faulty sensor connections Check continuity of sensor leads for
open circuits.
Check harness
for open circuits
(refer to the
harness diagram)
6Fuel Pressure
display shows an
incorrect reading
Wrong FUELP
SENSOR fitted Fit correct sensor Other sensors are
150psi/10Bar

Index STACK ST8100 Display System
14 UserÆs Guide Addendum
Appendix B. Wiring Harness Schematic Diagram