Oztrack Warranty Terms & Conditions

Warranty & Terms – Performance Services

1. Intended Use

Oztrack performance parts and services include:

Dyno tuning

Camshaft upgrades

Supercharger installations

Fuel system upgrades

Engine reconditioning and assembly

Performance engine builds (street and race applications)

These services increase power and often increase RPM, cylinder pressure, and mechanical load.

All performance parts and services are supplied for motorsport and off-road use unless otherwise agreed in writing.

2. Nature of Performance Modifications

When you increase power, you increase stress on internal and external parts and accessories including but not limited to;

Pistons, rings, rods, crankshaft

Bearings and oiling system

Valvetrain

Cooling system

Transmission, clutch, driveline

Fuel system

Idle pulleys, belts and belt driven accessories

Higher RPM use reduces service life compared to factory specifications.

If you choose performance upgrades, you accept the increased mechanical risk and reduced service life that comes with them.

3. Warranty Coverage

Claims must be made within 30 days of completion.

Warranty is limited strictly to:

-Verified installation errors performed by Oztrack

-Parts that we supplied proven to have a manufacturer defect

If a verified installation error by Oztrack is confirmed

Warranty will cover all the same parts initially supplied and labour required to rectify the problem to the same condition as it was immediately prior to the problem.

4. What Is Not Covered

The following are not covered under any circumstances:

• Consequential extra engine damage – damage that happens after the engines first incident and then it is still driven or run.

• Labour costs beyond replacing the faulty part

• Towing or transport

• Vehicle downtime or loss of income

• Damage from racing or track use

• Abuse, over-revving, missed shifts

• Detonation, poor fuel quality, contamination

• Cooling or lubrication failures

• Third-party tuning or modifications after our work

• External mechanical failure of unrelated components

If you race a performance engine or supercharged vehicle, the warranty will not apply. This also includes using the vehicle in competition or beyond safe limits.

5. Race Engines

Race engines and competition builds:

• Carry no warranty

• Are built for high-load competition use

• Require strict maintenance schedules

• Have significantly reduced service life compared to factory engines

You are responsible for monitoring:

• Oil pressure

• Fuel quality

• AFR and knock

• Engine temperature

• RPM limits

6. Dyno Tuning

Dyno tuning is performed on a controlled Hub Dyno environment.

Results depend on:

• Mechanical condition of the engine

• Fuel quality

• Fuel system capacity

• Ignition system condition

• Cooling system efficiency

• Exhaust system flow

We do not warrant power figures achieved.

We do not warrant engine longevity after tuning.

7. Supercharger & Fuel System Upgrades

Forced induction increases:

• Cylinder pressure

• Thermal load

• Fuel demand

Failures caused by:

• Fuel starvation

• Injector limitation

• Blocked Cats

• Pump failure

• Contaminated fuel

• Lean operation

• Excessive boost

• Owner adjustments

Are not covered.

8. Inspection & Claim Process

If an issue occurs:

• Stop operating the vehicle immediately

• Do not restart the engine

• Do not disassemble any components

• Do not authorise third-party repairs

• Return the vehicle or engine to Oztrack in the same condition it was in when the issue occurred

Failure to follow this process voids any claim.

We will inspect and determine whether the issue relates to:

• Installation error

• Manufacturer defect

• Mechanical failure unrelated to our work

• Misuse, over-revving, detonation, or external cause

Communication & Conduct

We are committed to resolving concerns professionally and based on mechanical evidence.

All communication must remain:

• Civil

• Respectful

• Fact-based

Abusive, threatening, or defamatory communication will not be responded to.

This includes:

• Personal attacks

• Demands made in an aggressive manner

• Repeated after business hours messages intended to pressure staff

• Accusations made before inspection

Our business operates during normal business hours. M-F 9am to 5pm

Emails sent outside business hours will be reviewed and responded to during office hours only.

Staff are not required to respond to messages during evenings, weekends, or leave periods.

If communication becomes unreasonable, we reserve the right to:

• Cease written communication

• Require communication to occur by phone or in person

• Require all communication to occur during business hours only

• Refuse further non-essential engagement

We will not engage in arguments by email.

Mechanical concerns must be resolved through inspection and data review, not assumptions.

We will work with you to:

• Diagnose the issue properly

• Review relevant data

• Identify the mechanical cause

• Determine whether the issue falls within our warranty terms

We aim to resolve matters efficiently and fairly, and where possible, in the most cost-effective way, even where the failure is outside our control.

Respectful communication allows us to focus on solving the problem.

9. NSW Consumer Law

Nothing in these terms excludes your rights under the Australian Consumer Law.

Where applicable, remedies are limited to those permitted by law.

10. Explanation of Common LS V8 Engine Issues

Valve Seat Drop – 6.0L & 6.2L GM Cylinder Heads

Certain factory GM 6.0L and 6.2L cylinder heads used in VE and VF models are known to experience valve seat drop.

The intake valve seats are cast iron inserts installed into aluminium cylinder heads. They rely on an interference fit that may be as small as:

• 0.001–0.003 inch

Over time, or after overheating (typically above 120°C), the aluminium can lose grip on the seat.

When this occurs:

• The valve seat drops

• The valve can jam in a lower position

• The piston contacts the valve

Damage can range from:

• Broken rocker arms

• Bent valves

• Damaged or destroyed pistons

• Cracked cylinder heads

• Cracked engine blocks

This failure can occur on completely standard engines.

Common symptoms:

• Engine runs normally

• Vehicle is parked warm

• On restart there is a sudden clunk or misfire,. then mechanical noise.

• Often occurs after stopping for fuel when the engine is hot from solid driving.

If you suspect valve seat drop:

• Do not restart the engine

The only permanent prevention is replacing intake valve seats with correctly machined seats that have improved interference fit. We offer cylinder heads with this upgrade as a recommended option.

New factory heads may reduce risk temporarily but do not permanently eliminate the design weakness.

Flexplate and Flexplate Bolts

Extra torque can put more load on flexplate bolts and the flexplate. This can introduce as rattle that is unsettling since it sounds like it is in the engine. The only way to rectify this is with new bolts and a flexplate. We can replace with one that is a better standard than the GM version. To do this the gearbox needs to be removed. This is an optional job and is unrelated to the work done unless we were paid to supply and install a new flexplate. Also some models have flexplate bolts prone to loosening from factory.

Bent Valve/s

Bent valves can be caused by a mechanical over-rev.Aged valve springs can allow valve float and bounce.Burnouts can cause excess heat in the valve springs. These create situations where vlaves can be bent.

Clearance of piston to valve is assessed on assembly and proven during tuning. If valves bend later on on it is not covered under warranty unless there is mistake in assembly (which would normally appear during tuning).

Bearing Failure after Cam Upgrade

Cam upgrades replace the lifters and valve springs, as well as the cam and better pushrods. The work is done in the top end of the engine. Bearing failure is in the bottom end and is a effect of bearing wear. There are cam bearings, conrod bearings and main bearings. These can only be replaced during an engine rebuild.  The bearings are not covered under warranty from a cam upgrade.  The best way to prevent bearing failure and wear, is to use the correct grade oil and do frequent oil changes.

Thrust bearing

11. Parts Selection & Reliability Approach

We choose components to maximise reliability in performance applications.

Typical choices include:

• Dual valve springs – if one spring fails, the second retains the valve preventing valve drop.

• LS7 lifters with new buckets – strong long-term reliability record in our builds

• GM multi-layer steel head gaskets

• LSA oil pump for improved pressure and volume

• Rollmaster Pro timing chain where applicable

• Replacement of plastic tensioner with a dampener block zero failure rate

• CNC ported heads with valve servicing

• Replacement intake valve seats on rectangular port 6.0L/6.2L heads when required

When replacing components such as:

• Water pumps

• Starter motors

• Ancillary items

We use parts with a proven service record.

12. Owner Responsibilities After Performance Modifications

Performance engines and tuned vehicles require higher maintenance standards than factory vehicles.

By proceeding with modifications, you agree to the following responsibilities.

Fuel Requirements

• Only use the minimum fuel octane specified at time of tune. Usually on 98 unless specified and noted.

• E85 vehicles must use quality, tested ethanol fuel

• Do not mix fuel types unless retuned

• Do not operate the vehicle if fuel quality is uncertain

Damage from poor fuel, low octane, contaminated fuel, or ethanol content variation is not covered.

Oil & Maintenance

• Use the oil grade specified by Oztrack

• Check oil level regularly

• Change oil and filter at reduced intervals appropriate for performance use  <7500km each change

• Monitor oil pressure

Oil starvation, contamination, or neglected servicing voids any claim.

RPM & Driving Limits

• Do not exceed the programmed rev limiter

• Avoid sustained over-revving

• Avoid missed shifts or mechanical over-rev

• Manual transmission over-rev events are detectable and not covered

Higher RPM reduces engine life. This is normal for performance engines.

Boosted & Supercharged Vehicles

• Do not alter pulley sizes

• Do not increase boost

• Do not adjust boost control

• Do not install different injectors or fuel pumps without recalibration

• Monitor catalytic converters for not being blocked
• Ensure the water to air intercooler system has maximum coolant and a functioning circulating pump.

Running lean or exceeding designed boost levels voids any claim.

Tuning Integrity

• Do not install third-party tunes

• Do not flash the ECU after our calibration

• Do not modify airflow, fuel system, or engine hardware without retuning

Any changes after delivery require recalibration.

Damage caused by altered tuning is not covered.

Monitoring

You are responsible for monitoring:

• Engine temperature

• Oil pressure

• Fuel pressure (where applicable)

• AFR / wideband (if fitted)

• Warning lights or abnormal noises

If a fault is suspected:

• Stop driving immediately

Continuing to operate a vehicle after signs of a fault will void any claim.

13. Pre-Existing Condition

Performance tuning does not repair worn or damaged engines.

You are responsible for ensuring the engine is mechanically sound before modification.

We are not responsible for failure caused by:

• Worn piston rings

• Bearing wear

• Previous overheating

• Pre-existing detonation damage

• Weak valve springs

• High kilometre fatigue

• Poor prior repairs

A dyno session does not certify engine health.

14. Used Engines & Customer-Supplied Parts

If we assemble or modify inc cam upgrade:

• A used engine

• A high-kilometre engine

• Customer-supplied parts

No warranty applies to:

• Unknown internal wear of engine or gearbox or other components

• Hidden cracks

• Metallurgical fatigue

• Incorrect previous machining

Customer-supplied parts carry no warranty from Oztrack.