| NEW RULES
ADDED TECHNICAL DEPARTMENT |
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| SAFETY
BELT / HARNESS UPDATES |
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2nd
December
2024 |
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General Reg 5910, Safety,
Interior, Safety belt/harness
In good condition and securely fastened
to the frame or reinforced mounting
point.
Mandatory |
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General Reg 5920, Safety,
Interior, Safety belt/harness
Reinforcement are minimum of 75mm (3
inches) by 75mm (3 inches) by 3mm (1/8
inch) steel plate.
Mandatory |
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General
Reg 5930, Safety, Interior, Safety
belt/harness
All
harnesses must be labelled or stamped by
the manufacturer with their production
date or an expiration (use by) date.
Onus is on the competitor/owner to
ensure that all Harnesses are in date.
Out of date Harnesses will require
exclusion from the event on the day.
Mandatory |
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General Reg 5940, Safety,
Interior, Safety belt/harness
Fitted as recommended by the
manufacturer, using the supplied
hardware.
Mandatory |
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General
Reg 5950, Safety, Interior, Safety
belt/harness
Bolts penetrate through belt webbing.
Forbidden |
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General
Reg 5960, Safety, Interior, Safety
belt/harness
Webbing crosses any surface sharper than
a diameter of 10mm (3/8 inch)
Forbidden |
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General Reg 5970, Safety,
Interior, Safety belt/harness
Protective plates installed where belts
wrap around any section of the fram
which is exposed to abrasion.
Mandatory |
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General Reg 5990, Safety,
Interior, Safety belt/harness
If seat is mounted in the inclined
position, then straps mounted as per the
attached image above.
Mandatory |
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General Reg 6000, Safety,
Interior, Safety belt/harness
If the two shoulder straps join prior to
a common mounting point, then the
junction of the belts is at least six
inched behind the drivers neck.
Mandatory |
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General Reg 6010, Safety,
Interior, Safety belt/harness
If safety belts incorporate a lever type
centre buckle, then fitted with a quick
release cover of flap to prevent
accidentally release of the buckle.
Mandatory |
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General Reg 6020, Safety, Interior,
Safety belt/harness
If sedan and
slower than 10.50 (1/8 mile equivalent)
or is a modern street vehicle slower
than 10.00 (1/8 mile equivalent) then
the minimum of a quick release,
lap/sash(three point) type required.
Must comply with Australian Standard E35
or AS/NZ 2596. Definition of a Modern
Street Car is one that was delivered
from factory with a minimum of a drivers
air bag and four wheel brakes.
Mandatory |
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General Reg 6030, Safety,
Interior, Safety belt/harness
If
pre-modern sedan running between 10.50
and 10.00 then a minimum four point
harness. Must comply with Australian
Standard E35 or AS/NZ 2596.
Mandatory |
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General
Reg 6060, Safety, Interior, Safety
belt/harness
All vehicles
requiring a Tech Inspection under 200
MPH- then harness to be no older than 10
years from date of manufacture or 5
years from the expiry date
Mandatory |
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General Reg 6070, Safety,
Interior, Safety belt/harness
All vehicles
requiring a Tech Inspection then
harnesses manufactured to allow for
frontal Head Restraint System are
acceptable. Must comply to SFI 16.1
Minimum and FIA equivalent.
Mandatory |
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General Reg 6080, Safety,
Interior, Safety belt/harness
All
vehicles requiring a Tech Inspection,
then centre-locking, five point or six
point ‘V’ type racing harness required.
Mandatory |
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General Reg 6100, Safety,
Interior, Safety belt/harness |
All vehicles
requiring a Tech Inspection then minimum
webbing width as per manufactures
requirements complying with SFI 16.1
minimum or FIA equivalent when used with
approved head and neck restraint
systems.
Mandatory |
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General Reg 6140, Safety,
Interior, Safety belt/harness |
If sedans,
Dragster, Altered or Funny Car, and with
a known performance of more than 200 mph
(320 kph), then complies to SFI 16.1
minimum or FIA 8852 aquivalent.
Mandatory |
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General Reg 6150, Safety,
Interior, Safety belt/harness |
All vehicles
with a known performance of more than
200MPH, then no older than 2 years from
date of manufacture and must not exceed
expiration date SFI 16.1 minimum. FIA
equivalent no older than 5 years from
date of manufacture and/or must not
exceed expiration date
Mandatory |
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General Reg 6155, Safety,
Interior, Safety belt/harness |
Minimum 2
inch wide 5 point harness meeting SFI
16.1 or 16.2 or FIA equivalent
minimum.No older than 10 years from date
of manufacture or 5 years from expiry
date.
Mandatory |
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| RULE
UPDATES and AMENDMENTS 24/25 Season |
| 20th September
2024 |
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GENERAL REGULATIONS
Gen Reg 7815,
Vehicle, Staging
Where a venue
utilises the auto-start system the
staging timer is only activated where
one competitor is in Full Stage and the
other in pre-Stage. If a competitor has
failed to stage within twenty (20)
seconds for Sportsman classes, or seven
(7) seconds for Professional,
Performance and Pro Radial of his or her
opponent being permitted to do so, then
that competitor will be disqualified.
Mandatory
Gen Reg 7818
A reasonable
amount of time will be allowed for
Driver/ Rider to stage, with that
determination being at the sole and
absolute discretion of The Starter.
Failure to stage upon The Starter’s
instructions is possible grounds for
disqualification. If a competitor has
failed to stage within twenty (20)
seconds for Sportsman classes, or seven
(7) seconds for Professional,
Performance and Pro Radial of his or her
opponent being permitted to do so, then
that competitor may be adjudged to be
“sandbagging”, and The Starter may
initiate the starting sequence, at their
discretion.
Mandatory
Gen Reg 7590
Vehicle, Parachute
When in the
hands of the starter, safety pins used
to retain parachute must be removed,
failure to remove safety pins, devises
and packing cord will automatically see
that run disallowed.
Mandatory
Gen Reg 7825
Vehicle, Bye Solo – Staging
Bye/Solo run -
Vehicles/Bikes must stage and accept the
tree under their own power (engine
running) for the WIN to be awarded.
Mandatory
JUNIOR DRAGSTER
Class Reg
28740 Engine, Engine – Location
Crankshaft
centreline maximum 21 inches (533.4 mm)
above ground, measured when tyres are
inflated normally.
Mandatory
SUPERCHARGED
OUTLAWS
Class Reg
31510, Engine, Supercharger
Belt driven
Roots, Screw and Pro Charger type
supercharger
Allowed
Class Reg
31512, Engine, Turbo Charged
Turbo Charging
Allowed
Class Reg
31514, Engine, Nitrous
Nitrous Oxide
Injection
Allowed
EXTREME BIKE
Extreme Bike will
be all run, that qualify between 0.00
and 8.99 seconds or (1/8 mile
equivalent)
SUPERCOMP
SUPER
COMPACT
New Class DD/OM
Class Reg
19974
DD/OM Four
Cylinder engine only up to 2.4 litre
Minimum weight 2100lbs (952.5kg). 2 x
Power Adders only. Maximum Rear Tyre
size 28x9. Engine must be sealed prior
to competition racing
Mandatory
New Class CC/OM
Class Reg
19975
CC/OM Four
Cylinder engine above 2.5 litre litre
Minimum weight 2100lbs (952.5kg). 2 x
Power Adders only. Maximum Rear Tyre
size 28x9. Engine must be sealed prior
to competition racing
Mandatory
Weight
Break DD/OM
Class Reg
21365, Vehicle, Weight Break
If Racing Class
if DD/OM, then engine type is 4
cylinder, and minimum weight is 952.5 kg
(2100 lbs).
Mandatory
PRO STOCK MOTORCYCLE
Class Reg
8925, Chassis / Frame, Wheel – rear –
tyre – width
Must be minimum
8" (203.2mm )and Maximum 10" (250.4mm)
Mandatory
Class Reg
8926, Chassis / Frame, Rear Suspension
No rear
suspension allowed
Mandatory
Class Reg
8950, Chassis / Frame, Wheelie bars
Wheelie bars
Mandatory
Class Reg
9150, Engine, Engine – main case
Engine cast main
case modifications, if not V-Twin.
Forbidden
Class Reg
9190, Engine, Engine – main case
Engine main case
if Kawasaki and Suzuki then billet
crankcase.
Allowed
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| Safety Rules
Update |
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1st June 2022 |
| SUPERCOMP:
Modified Production |
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| IHRA Australia
Technical Review Committee Rules Update |
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| As part of an
ongoing review of all categories it has
been deemed necessary to allow for the
following safety improvements to the
Supercomp Modified Production category.
The following rules are effective
immediately. See rules below: |
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Class
Reg 25892, Modified Production, Body
Spoiler
If fabricated into the rear deck lid.
Allowed |
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Class
Reg 25894, Modified Production, Body
Spoiler
Moulded into the rear deck lid.
Forbidden |
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| Class
Reg 25896, Modified Production, Body
Spoiler |
If fabricated,
maximum distance from tip to transition
point of spoiler to body line is 355mm
(14 inches).
Mandatory |
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Class
Reg 25898, Modified Producton, Body
Spoiler
Spill plates up to 150mm (6 inches) at
highes point and attached so a maximum
of 25mm (1 inch) extends to the top of
the spoiler. Must be no lower than
horizontal.
Mandatory |
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Class
Reg 26660, Modified Production, Engine,
Lower Engine Containment Device
Any naturally aspirated vehicle running
slower than 7.99 seconds 1/4 mile of
5.10 seconds 1/8, the use of a lower
engine containment device is
recommended.
Allowed |
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Gen Reg 5240, Engine, Lower Engine
Containment Device
If naturally aspirated and completing
the 1/4 mile in less than 8.00 seconds
or the 1/8 mile in less than 5.10
seconds, fitment of either a lower
engine containment device, belly pan or
both, which are capable of collecting
oil / fluid and debris.
Mandatory |
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Gen
Reg 5245, Engine, Lower Engine
Containment Device
Any naturally aspirated vehicle running
slower than 7.99 seconds 1/4 mile of
5.10 seconds 1/8, the use of a lower
engine containment device is
recommended.
Allowed |
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| NEW SUPERCOMP
CLASSES ADDED |
| 26th May 2022 |
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| Competitors
please be advised of new classes added
to Supercomp bracket. |
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| Ford Barra
98mm and 76mm Turbo Classes |
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| FORD
BARRA SUPERCOMP CLASS 98mm Turbo |
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Classes: |
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FB98/DA |
7.0lbs/cube |
Min Weight 1700lbs including
driver |
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FB98/AA |
7.0lbs/cube |
Min Weight 1700lbs including
driver |
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FB98/GA |
9.5lbs/cube |
Min Weight 2300lbs including
driver |
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FB98/MSA |
14.0lbs/cube |
Min Weight 3400lbs including
driver |
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ENGINE:
Cast iron OEM
Capacity: Maximum 250 c.i. |
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CYLINDER HEADS:
Aluminium OEM ONLY |
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INDUCTION:
EFI only |
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NITROUS OXIDE:
10lb bottle maximum
Single point injection, line size -3
maximum |
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TURBO:
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| Turbo size
98mm maximum |
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TRANSMISSION:
FB98/DA - FB98/AA - FB98/GA -
FB98/MSA
OEM or OEM type eg. Powerglide/T400 |
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| FORD
BARRA SUPERCOMP CLASS 76mm Turbo |
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Classes: |
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FB76/DA |
7.0lbs/cube |
Min
Weight 1700lbs including driver |
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FB76/AA |
7.0lbs/cube |
Min
Weight 1700lbs including driver |
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FB76/GA |
9.5lbs/cube |
Min
Weight 2300lbs including driver |
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FB76/MSA |
14.0lbs/cube |
Min
Weight 3400lbs including driver |
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ENGINE:
Cast iron OEM
Capacity: Maximum 250 c.i. |
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CYLINDER HEADS:
Aluminium OEM ONLY |
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INDUCTION:
EFI only |
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TURBO:
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Turbo size 76mm maximum |
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TRANSMISSION:
FB76/DA - FB976/AA - FB76/GA
Powerglide 2 forward speeds maximum
FB76/MSA
OEM or OEM type eg. Powerglide/T400 |
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Performances
will be monitored by the Record Review
Committee.
The IHRA Australia Supplementary Rule
App has been updated with these new
classes for Supercomp. The National
Records will be updated for both the 1/4
mile and 1000ft.
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| ONBOARD FIRE
SUPPRESSION SYSTEMS UPDATE |
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Date: December 22, 2021 |
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General Regulations
Rules - 6480 and 6850
have been amended. |
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General Reg
6840, Safety, Support
Group, Fire suppression
system
Agent spray nozzles to
be configured to
manufacturers
recommendations.
Mandatory |
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General Reg
6850, Safety, Support
Group, Fire suppression
systems
At least 1 nozzzle to be
sprayed into driver's
compartment.
Mandatory |
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| CLASS SWAPPING
Supercomp and Performance Bike |
| Tuesday 5th
October 2021 |
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| In response to
the clarification on the intent of the
Class Swapping regulation for
Performance classes, IHRA Australia
agrees that the below wording will be
put in place for the 2021-2022 400
THUNDER Season. |
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General Reg 48930, Racing Procedure,
Class Swapping |
| Competitors in
our performance categories, Super Comp
and Performance Bike, are allowed to
change between a maximum of two
designations per championship season.
That is X to Y and back to X is
permitted. |
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Mandatory |
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| NEW SUPERCOMP
CLASSES ADDED |
| Tuesday 5th
October 2021 |
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Competitors please be advised of new
classes added to Supercomp bracket.
Modified Sedan has also been updated
with class limits suited to current
technology.
Flat Tappet required for A/MS, A/MSA, B/MS, B/MSA, C/MS, C/MSA
with listed weight .
Roller Camshaft permitted for A/MS, A/MSA, B/MS, B/MSA, C/MS,
C/MSA with additional 100lbs weight
added to standard class requirement.
Roller Camshaft permitted for H/MS, H/MSA, D/MS, D/MSA,E/MS,
E/MSA.
Current cars can still compete with no
change required.
Performances will be monitored by the
Record Review Committee.
The IHRA Australia Supplementary Rule
App will be updated with these new
classes for Supercomp over the coming
weeks. The National Records have been
updated for both the 1/4 mile and
1000ft. |
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| D/MS
and D/MSA |
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ENGINE
420-460 c.i. V8 Only
Block- OEM Alloy or Cast Iron
Max. Bore 4.300
Maximum Valve Lift .900(Valve)
Roller Camshaft Permitted
Lifter .904 Diameter (No Keyway Lifters)
Rpm Limit 9200rpm (Logging Required)
One inch travel dial
indicator and mounting plate to measure
cam lift to be supplied by the racer
All
engines must be sealed prior to
competition.
HEADS
Any OEM or Aftermarket Non-Billet
Accepted.
INTAKE MANIFOLD
Any Mass-Produced Cast Manifold
Permitted. Original identification
required
Internal Porting Permitted.
Welding Repairs for Minor Damage
Permitted.
OILING
Wet Sump Only.
Single Stage External Oil Pump
Permitted.
INDUCTION
EFI 8 Injectors Maximum Only.
One Only 4500 Style Base Throttle Body
or One Carburettor 4500 Style Base.
IGNITION
Any ECU Approved by IHRA Australia
No Traction Control Permitted
AUTO TRANSMISSION
OEM Based Automatic Transmission
Maximum 3 Speeds
No Lockup Torque Convertors.
MANUAL TRANSMISSION
Maximum 5 forward
Speeds
FUEL
Any IHRA Australia Approved Unleaded,
Methanol, E85 fuels only. Nitrous Oxide
and Nitromethane Not Permitted.
BODY
As Per Current / MS Body Regulations.
No Wheelie Bars
WEIGHT
7.25lbs Per Cube. Minimum Weight 3045lbs
TYRE SIZE
May be no larger than 275/60R15 or
28x10.5 radial, (30x9x15 slick/radial
slick is optional) as labelled by
manufacturer.
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| E/MS
and E/MSA |
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ENGINE
340 –
370 c.i. V8 Only
Block-
OEM Alloy or Cast Iron
Max
Bore 4.080
Max
Valve Lift .800(Valve)
Roller
Camshaft Permitted
Lifter
.904 Diameter (No Keyway Lifters)
Rpm
Limit 9200rpm (Logging Required)
One
inch travel dial indicator and mounting
plate to measure cam lift to be supplied
by the racer.
All
engines must be sealed prior to
competition.
HEADS
Any OEM
or Aftermarket Inline Valve Only.
Cantered, Splayed Valve, Billet Heads
Not Permitted.
INTAKE
MANIFOLD
Any
Mass-Produced Cast Manifold Accepted
original identification required
Internal Porting Permitted.
Welding
Repairs for Minor Damage Permitted.
OILING
Wet
Sump Only
Single
Stage External Oil Pump Permitted
INDUCTION
EFI, 8
Injectors Maximum Only
One only 4150
base Throttle body or One only 4150
style carburettor. (clarification Holley
base bolt pattern spacing) No Dominators
IGNITION
Any ECU
Approved by IHRA Australia
No
Traction Control Permitted.
AUTO
TRANSMISSION
OEM
Based Automatic Transmission
Maximum
3 Speeds
No
Lockup Torque Convertors.
MANUAL TRANSMISSION
Maximum 5 forward Speeds.
FUEL
Any
IHRA Australia Approved Unleaded,
Methanol, E85 fuels only. Nitrous Oxide
and Nitromethane Not Permitted.
BODY
As Per
Current / MS Body Regulations
No
Wheelie Bars Allowed
WEIGHT
9.00lbs
Per Cube Minimum Weight 3060lbs
TYRE
SIZE
May be
no larger than 275/60R15 or 28x10.5
radial, (30x9x15 slick/radial slick is
optional) as labelled by manufacturer.
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| D/D
and D/DA - D/A and D/AA |
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ENGINE
340 –
370C.I. V8 ONLY
Block-
OEM Alloy or Cast Iron
Max
Bore 4.080
Max
Valve Lift .800 (Valve)
Roller
Camshaft Permitted
Lifter
.904 Diameter (No Keyway Lifters)
Rpm
Limit 9200rpm (Logging Required)
One
inch travel dial indictor and mounting
plate to measure the cam lift to be
supplied by the racer.
All
engines must be sealed prior to
competition
HEADS
Any OEM
or Aftermarket Inline Valve Only.
Cantered, Splayed Valve, Billet Heads
Not Permitted
INTAKE
MANIFOLD
Any
Mass-Produced Cast Manifold Accepted
must retain original identification
Internal Porting Permitted.
Welding
Repairs for Minor Damage Permitted.
OILING
Wet
Sump Only. Single Stage External Oil
Pump Permitted
INDUCTION
EFI, 8
Injectors Maximum Only
One only 4150
base Throttle body or One only 4150
style carburettor. (clarification Holley
base bolt pattern spacing) No Dominators
IGNITION
Any ECU
Approved by IHRA Australia No Traction
Control Permitted.
AUTO
TRANSMISSION
OEM
Based Automatic Transmission
Maximum
3 Speeds
No
Lockup Torque Convertors.
MANUAL TRANSMISSION
Maximum 5 Forward Speeds.
FUEL
Any
IHRA Australia Approved Unleaded,
Methanol, E85 fuels only. Nitrous Oxide
and Nitromethane Not Permitted.
BODY
As Per
Current Altered and Dragster Body
Regulations
WEIGHT
4.50lbs
Per Cube Minimum Weight 1530lbs
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| E/AP
and E/APA |
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ENGINE
340 – 370C.I. V8 ONLY
Block- OEM Alloy or Cast Iron
Max Bore 4.080
Max Valve Lift .800 (Valve)
Roller Camshaft Permitted
Lifter .904 Diameter (No Keyway Lifters)
Rpm Limit 9200rpm (Logging Required)
One inch travel dial indicator and
mounting plate to measure cam lift to be
supplied by the racer.
All
engines must be sealed prior to
competition.
HEADS
Any OEM or Aftermarket Inline Valve
Only. Cantered, Splayed Valve, Billet
Heads Not Permitted.
INTAKE MANIFOLD
Any Mass-Produced Cast Manifold Accepted
must retain original identification
Internal Porting Permitted.
Welding Repairs for Minor Damage
Permitted.
OILING
Wet Sump Only. Single Stage External Oil
Pump Permitted
INDUCTION
EFI, 8 Injectors Maximum Only
One only 4150
base Throttle body or One only 4150
style carburettor. (clarification Holley
base bolt pattern spacing) No Dominators
IGNITION
Any ECU Approved by IHRA Australia No
Traction Control Permitted.
AUTO TRANSMISSION
OEM Based Automatic Transmission
Maximum 3 Speeds.
No Lockup Torque Convertors.
MANUAL TRANSMISSION
Maximum 5 forward
speeds.
FUEL
Any IHRA Australia Approved Unleaded,
Methanol, E85 fuels only. Nitrous Oxide
and Nitromethane Not Permitted.
BODY
As Per Current AP Body Regulations
WEIGHT
6.50lbs Per
Cube Minimum Weight 2210lbs
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| PROTECTIVE CLOTHING UPDATE |
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Friday 27th November 2020 |
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IHRA
Australia Technical Review Committee
have updated the Professional -
Performance and Sportsman Clothing Matrix's. |
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A new Matrix has been created -
Sportsman Supercharged Outlaws |
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These
updated Clothing Matrix's will be
effective from 1st February 2021 |
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These new Matrix's will help you the
competitor easily identify which item of
Protective clothing you are required to
wear. |
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Note: To download
view / print in PDF please click on the
images below: |
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PROFESSIONAL CLOTHING MATRIX |
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PERFORMANCE CLOTHING MATRIX |
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SUPERCHARGED OUTLAWS CLOTHING
MATRIX |
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SPORTSMAN CLOTHING MATRIX |
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| Release Date
10th June 2020 |
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IHRA Australia and its Technical Review
Committee (TRC) have used COVID-19 and
the unfortunate downtime in drag racing
activities to further increase and
develop a safer sport, to improve driver
/ rider / vehicle safety specifications.
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There will be updates provided over the
next few months and we urge anyone in
the drag racing industry to refer to
IHRA Australia’s Website for all of
these latest rule updates.
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The following rules have been created
and you will need to take note
specifically of their implementation
dates. |
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It is a responsibility of all
drivers/riders/crew chiefs to be
familiar and up to date with all of
their class regulations. As
Follows:
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ELECTRIMOTION
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General
Reg 4096, Electrimotion
Effective 01/01/2021 any vehicle running
a quicker ET than 6.50 ¼ mile or 4.15
1/8 mile must have Electrimotion system
fitted with the following functions,
Fuel Shut off, Ignition shut down and
parachute release device must be
functional.
Mandatory
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http://www.electrimotion.com/
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HELMET EJECT SYSTEM
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General
Reg 2885, Safety Driver / Rider, Helmet
All
Professional Categories, effective 1st
January 2021. Eject Helmet Removal
System (Part Number 890-01-30) mandatory
and must be installed as per
manufacturer’s instructions. A Stand 21
Lid Lifter head sock meeting SFI 3.3 may
be used in lieu of the Eject Helmet
Removal System.
Mandatory
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General
Reg 2886, Safety, Driver, Helmet
All
other 4 wheel categories exceeding 6.50
ET ¼ mile (4.15 ET 1/8 mile)
Effective 1st January 2021.
Eject Helmet Removal System (Part Number
890-01-30) must be installed per
manufacturer’s instructions. A Stand 21
Lid Lifter head sock meeting SFI 3.3 may
be used in lieu of the Eject Helmet
Removal System.
Mandatory
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General
Reg 2887, Safety, Rider, Helmet
Any
Motorcycle running quicker than 7.50 ET
¼ mile (4.75 ET 1/8 mile)
Effective 1st January 2021.
Eject Helmet Removal System (Part Number
890-01-30) must be installed per
manufacturer’s instructions. A Stand 21
Lid Lifter head sock meeting SFI 3.3 may
be used in lieu of the Eject Helmet
Removal System.
Mandatory
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ROLL CAGE HELMET BARS
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General
Reg 1090, Chassis / Frame, Roll Cage,
Helmet Bar
Chassis
Helmet Bars to conform to Figure 10.0
Mandatory
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FIGURE 10.0 |
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General
Reg 1100, Chassis / Frame, Roll Cage,
Helmet Bar
If
Dragster or Hot Rod or Funny Car or
Roadster or Altered or Junior Dragster
then fitted with helmet bars.
Mandatory
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General
Reg 1105, Safety, Chassis / Frame, Roll
Cage, Helmet Bar
If
Dragster or Hot Rod or Funny Car or
Roadster or Altered, any flat steel
strap forbidden.
Effective 01/01/2021.
Mandatory
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General
Reg 1110, Safety, Chassis / Frame, Roll
Cage, Helmet Bar
Existing
Pre 2020 Dragster or Hot Rod or Funny
Car or Roadster or Altered, then helmet
bar constructed of 3/4-inch x 0.058 inch
minimum or larger round tube only.
See
Figure 10.0
Allowed
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General
Reg 1112, Safety, Chassis / Frame, Roll
Cage, Helmet Bar
Junior
Dragster All NEW chassis helmet bars
must be constructed of 3/4 x 0.058 inch
Chromoly, 3/4-inch x 0.083 Mild Steel,
round tube only. Effective immediately.
See
Figure 10.0
Mandatory
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General
Reg 1115, a Safety, Chassis / Frame,
Roll Cage, Helmet Bar
If
Dragster or Hot Rod or Funny Car or
Roadster or Altered, (excluding Junior
Dragster). All NEW chassis helmet bars
must be constructed of 1-inch x 0.058
inch Chromoly, 1-inch x 0.118-inch Mild
Steel, round tube only. Effective
immediately.
Mandatory
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General
Reg 1120, Safety, Chassis / Frame, Roll
Cage, Helmet Bar
If
helmet bars required, then between
ALL uprights of the roll cage.
Mandatory
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IHRA AUSTRALIA
TECHNICAL DEPARTMENT
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