GTR TACHO User manual

GTR TACHO
INSTRUCTION MANUAL
WWW.GTRDEVELOPMENTS.COM

GTR DEVELOPMENTS WWW.GTRDEVELOPMENTS.COM
DESCRIPTION
The GTR Tacho is a self-contained electronic engine monitoring system
that displays RPM, coolant temp, oil pressure, battery voltage and also
with the option of up to 2 x exhaust pyrometers. The compact 3-1/8”
x 3-1/8” size is very easy to mount. The GTR Tacho’s extremely rugged
construction allows it to perform well in almost any racing environment.
The GTR Tacho recalls and displays the highest overall RPM and
gives total engine RPM, coolant temp, oil pressure and exhaust temp
(if exhaust temperature option is used) from the race start to finish in a
simple graph form. The Tacho works on 4, 6 & 8 cylinder engines with
either magnetos or distributors and is powered by a common 9 volt
battery or can be hard wired in to and 6-12 volt supplies with simple
wiring and sensor installation.
INSTALLATION
The kit comes with mounting wings that attach to the Tacho housing
with 4 x M4 x .7mm button screw and can be fixed to the vehicle with
2 x dzues fastners. The unit should be securely mounted in the cockpit
in a good viewing position and clear from interfering with any of the
vehicle controls.
Wiring Instructions:
Brown gOil Power
Blue gWater Temp
White gAux 0
Green gPryo 0 Neg
Pink gPryo 0 Pos
Yellow gTacho
Black gBatt Neg/Earth
Grey gOil Pressure
Red gBatt Pos (8-16V)
Violet gAux 1
Orange gPryo 1 Pos
Light Green gPryo 1 Neg
Tach Oil Pressure
Brown gWhite
Grey gRed
Black gBlack

GTR DEVELOPMENTS WWW.GTRDEVELOPMENTS.COM
OPERATION
Turning on:
The Tacho will turn on automatically when
the engine is started, but can be manually
turned on by pushing the red button. The
unit will display the GTR symbol for 6
seconds before displaying the main screen
(Figure 2.) and automatically turn off 5
minutes after the engine is turned off.
When it turns off it will still retain its recall
memory.
When the unit is turned on press the right
arrow button, this will take you to the
main menu see (Figure 3.) to select any
of the below features scroll down using
the down arrow button then press the
right arrow button to select. If up or down
arrow is pushed on the home screen this
will brighten or dim the screen back light. If
the up and down arrows are pushed at the
same time this will change the back ground
colour.
Statistics:
This feature gives the recall on all
parameters measured throughout the
race (Engine RPM, Oil Pressure, Coolant
Temperature, Pyro Temperature), and
recalls in a simple graph format. Once
you have selected statistics (Figure 3.), you
can select RPM Graph (Figure 4.). When
viewing the RPM Graph you can see
RPM on the left side of the Graph and
Figure 3.
Figure 1.
Figure 2.
time horizontally along the bottom. You can use the up / down arrows
to scroll back in time to view the RPM for the entire engine run time.

GTR DEVELOPMENTS WWW.GTRDEVELOPMENTS.COM
Figure 8.
Statistics continued:
You can also select either Oil Pressure; Water Temperature; Pyro
Temperature (Figure 5,6,7.) and view an Oil Pressure; Water Temperature;
Pyro Temp Graph. On the left hand side of the Graph you can see the Oil
Pressure; Water Temperature; Pyro Temperature and time is displayed
horizontally along the bottom. You can use the up / down arrows to
scroll back in time to view the Oil Pressure; Water Temperature; Pyro
Temperature for the entire engine run time.
Select ‘clear stats’(Figure 8.) to
clear statistics. If this is not
cleared this will roll over as the
Tacho has a 2 hour recall time.
Please note at the bottom of the
Statistics Menu there is a ‘Record
Time’ which details the length of
Engine run time.
Figure 4. Figure 5.
Figure 6. Figure 7.

GTR DEVELOPMENTS WWW.GTRDEVELOPMENTS.COM
Set back light: (Figure 9.)
This enables the screen brightness to be adjusted. This is adjusted by
using the up and down arrow buttons to the desired setting (Figure 10.)
then by pressing the right arrow button this selects the setting and will
take you back to the main menu.
Figure 9.
Figure 11.
Figure 10.
Set RPM warning: (Figure 11.)
This feature is for an RPM warning. This is adjusted by using the up and
down arrow buttons to the desired setting (Figure 12.), then by pressing
the right arrow button this sets the setting and will take you back to the
main menu.
Figure 12.
‘Max RPM’ which details the maximum RPM, ‘Max Water Temp’ which
details the maximum water temperature and ‘Max Pyro Temp’ which
details the maximum pyro temperature reached whilst in operation.

GTR DEVELOPMENTS WWW.GTRDEVELOPMENTS.COM
Set oil pressure warning: (Figure 13.)
This feature is a low oil pressure warning which is adjusted by using the
up and down arrow buttons to scroll to the desired setting. Press the
right arrow button to select the setting (Figure 14.) and then the Tacho
will automatically return to the main menu.
Figure 15.
Figure 16.
Set water temp warning: (Figure 15.)
This feature is a high temperature warning which is adjusted by using
the up and down arrow buttons to scroll to the desired setting (Figure
16.). Press the right arrow button to select the setting and then the
Tacho will automatically return to the main menu.
Figure 13.
Figure 14.

GTR DEVELOPMENTS WWW.GTRDEVELOPMENTS.COM
Set idle RPM: (Figure 18.)
This feature determines the RPM
at which the recall records from. To
prevent unwanted recording during
warm up and engine idleing etc. This
is adjusted by using the up and down
arrow buttons to scroll to the desired
setting. Press the right arrow button
to select the setting and then the
Tacho will automatically return to the
main menu.
Figure 18.
Figure 19.
Figure 17.
OPERATION
Set ignition type: (Figure 17.)
To set Tacho feature up, turn the unit
on and press the right button, this
will take you to the main menu. Scroll
down to ‘set ignition type’ using the
down arrow button, then press the
right arrow button, select ‘ignition
type’.
Set Pressure and temp units: (Figure 19.)
This feature allows the pressure
units to be changed between PSI
and Bar and Temperature units to be
changed between C° and F°. This is
adjusted by using the up and down
arrow buttons to scroll to the desired
setting. Press the right arrow button
to select the setting and then the
Tacho will automatically return to the
main menu.

RACE PROVEN TECHNOLOGY
GTR Developments is an innovative New Zealand company dedicated
to the manufacturing and development of specialised race car parts.
[phone] | [email protected]
www.gtrdevelopments.com
Disclaimer
FOR RACING PURPOSES and OFF ROAD
USE ONLY!
Please read the following carefully. If purchasing
a part(s) termed “For Racing Purposes Only”, you
agree to the following:
Vehicle racing is an inherently dangerous sport with
significant risk of personal injury or even death.
When a user participates in vehicle racing and/
or track events, he/she accepts the risk inherent
therein. GTR Developments Ltd, its employees,
and affiliates makes no warranty that the use of
its products or parts guarantees personal safety or
freedom from physical injury or operates as a life
saving device.
GTR Developments Ltd will honor the Consumer
Guarantees Act (CGA) for products as follows:
- Be of acceptable quality (durable, safe, fit for
purpose, free from defects, acceptable in look or
finish).
- Match the description provided in the above
instruction manual.
- Arrive on time (within a reasonable time if not
agreed) and in good condition.
- Have spare parts and repair facilities available.
GTR Developments Ltd disclaims all liability for any
special, direct, incidental or consequential damages,
or any damages whatsoever, including, without
limitation, the loss of life or limb, or damages due
to bodily or personal injury, which may arise or
result from the sale, installation, or use of any of its
products and parts.
It is the user’s responsibility to inspect and verify the
dimensions, specifications, and performance of all
products and parts as being appropriate for the use
to which the user will put them prior to any actual
installation and/or use of said products and parts.
GTR Developments Ltd products and parts are
to be inspected by the user before each use for
evidence of damage, defect or wear. Any deviation
by the user from the manufacturer’s specifications
concerning use, maintenance, repair, alterations and
modifications constitutes willful negligence.
The installation of GTR Developments Ltd products
or parts may adversely affect other vehicle
components, safety equipment or manufactured
goods (collectively “goods”). GTR Developments Ltd
assumes no responsibility for any damage to other
goods, or bodily injury that may arise due to failure
of other goods, due to installation and/or use, either
proper or improper, of its products or parts.
The liability of GTR Developments Ltd is limited
to the replacement of defective products or parts
found under examination by manufacturer to be
defective in material or workmanship within 60
days after purchase, and which has not been caused
by an accident, improper use, alteration, tampering,
excessive use, misuse, modification or abuse. The
damage of the user shall be deemed liquidated in
the costs of replacement of the product or part.
GTR Developments Ltd assumes no responsibility
for errors, omissions, diagrams, pictures,
illustrations or text in these instructions or the
documents contained herewith.
By purchasing or using this product, the user
agrees that if any provision of this Disclaimer is
held to be illegal, invalid or unenforceable under
present or future law, such provision shall be fully
severed from the Disclaimer and this Disclaimer
shall be construed and enforced as if such illegal,
invalid or unenforceable provision never comprised
a part hereof, and the remaining provisions hereof
shall remain in full force and effect and shall not
be affected by the illegal, invalid or unenforceable
provision, there shall be added automatically as part
of this Disclaimer a provision as similar in its terms
to such illegal, invalid or unenforceable provision as
may be possible and be legal, valid and enforceable.
Thank you
2020 GTR DEVELOPMENTS LTD