Servicing the Hills District for over 30 years Specialising in standard, performance and 4wd performance exhaust systems
What We Offer
Standard Exhausts
Your vehicle's exhaust system plays a critical role. Contact our team for good advice, a fair price and a quality replacement exhaust system for your vehicle.
We are a fully licenced mechanical facility and offer a wide range of services including
general mechanical repairs,
log book servicing, performance upgrades and dyno tuning for most popular makes and models.
Performance Exhausts
Whether you are a performance car enthusiast, a 4x4 owner or just want a better note from your car, we can make your vehicle perform better and sound better.
We are able to install both products supplied and also product supplied by customers. We are able to install wide range of
accessories, standard replacement parts, performance parts and enhancements for most makes
and models.
4wd Exhausts and Diesel Performance
We offer a wide range of performance exhaust systems for 4wd vehicles in both
mild steel and stainless steel.
At Castle Hill Exhaust we pride ourselves at not only just having the ability to fit bolt on accessories and components.
We have the equipment, knowledge and skill to fabricate products and parts.
"Their attention to detail and dedication to customer satisfaction is hard to come by in the automotive industry.
Their packages not only offer great performance but driveability and fuel economy. Their products offered are not a sales pitch but a recommendation of tried and tested components.
I can honestly recommend this business for all your performance needs and wants."
David Keys is the managing director of Castle Hill Performance Centre and has had extensive experience in not
only the exhaust industry but also in all aspects of the automotive industry.
David has also been involved in building several street and race cars including his own street/show/drag turbo rotary powered 1972 Mazda RX3.
This car has won numerous awards including Best in Show, Top Engine Bay and Best 4 door sedan at various car
shows, and has also achieved a best ¼ mile time of 9.41@142MPH on the first and only time the car has visited
the race track.
As well as the Castle Hill Performance race car which as ran a best time of 7.5 @ 184mph and
the Castle Hill Performance VT Street car that features 1000rwhp turbo LS based engine combo.
Dale Heiler
Dale Heiler has had 15+ years in the automotive industry and made his start working on a formula ford race team,
since then he has expanded his knowledge into ECU tuning.
He is an expert with all ECU tuning from factory computers to hi-tech aftermarket computers and has been tuning
for over 15 years. He has built up a reputation as being one of the leading tuners in the performance tuning
industry.
Chris Turner
Chris Turner has 2 years experience working in the exhaust industry before starting at Castle Hill Performance
Centre in December 2005. Chris is an enthusiastic car builder and fabricator who excels in performance
fabrication.
He has been involved in several extensive build-ups including his own 700hp turbo v8 VS Commodore,
show quality EH Holden street car 500rwkw VY Turbo 6.0L ute and played a large part in the CHP race car and
Street car.
4wd Performance
We carry all leading brands including X force and Redback Extreme Duty. We have bolt on performance exhaust
systems for most 4WD applications whether it be petrol, diesel, Turbo diesel or late model 2x4 configured
vehicles.
Castle Hill Exhaust can also make complete custom exhaust system for applications where bolt on systems are not
available, or for modified vehicles that require larger diameter systems or customised exhaust to clear various aftermarket components.
Castle Hill exhaust are diesel tuning and performance specialists, Castle Hill Exhaust can offer tuning solutions on most popular late model common rail applications, we are equipped to custom tune/ ECU remap most popular late model vehicles and are authorised Unichip Agents offering supply, install and custom dyno tuning of the wide range of unichip tuning modules including the ever expanding plug and play kits.We also offer extensive performance upgrades including intercooler kits and can customise package to suit all applications and requirements
When it comes to 4wd & Diesel Performance including tuning we have you covered..
Fabrication
At Castle Hill Exhaust we pride ourselves at not only just having the ability to fit bolt on accessories and
components.
We have the equipment, knowledge and skill to fabricate products and parts.
From complicated custom exhausts and intercooler systems to basic brackets or modification of parts
that do not quite fit as expected, we have the job covered.
We are able to work with mild steel, aluminium and stainless steel, the quality of our work is
second to none.
This does set us apart from a lot of other shops.
Mechanical/Servicing
At Castle Hill Exhaust we pride ourselves at not only just having the ability to fit bolt on accessories and
components.
We have the equipment, knowledge and skill to fabricate products and parts.
From complicated custom exhausts and intercooler systems to basic brackets or modification of parts
that do not quite fit as expected, we have the job covered.
We are able to work with mild steel, aluminium and stainless steel, the quality of our work is
second to none.
This does set us apart from a lot of other shops.
Performance Exhausts
Custom Exhausts
Our experienced exhaust specialists can custom make a system to suit your requirements whether it is a full
system or a cat back system, mandrel or press bent, mild, aluminised or stainless steel.
Performance exhaust systems
We have a comprehensive range of bolt on performance systems for many makes of cars, utes & 4x4's. These
have been specifically designed for the make & model of vehicle & will normally give you a performance
gain & depending upon your driving style improved fuel economy.
Extractors
Also know as headers. Extractors allow improved airflow from your engine, reducing back pressure. There are a number of
different manufacturers of header in Australia – Genie, Pacemaker, Hi-Tec, Hurricane.
Hi Flow cats
Catalytic Converters are an important part of your car's exhaust system & are a legal requirement in
cars manufactured after 1986. Hi Flow cat is almost a necessity on all well designed performance
exhaust systems, this is due to the fact the catalytic converter is usually the most restrictive part
in the exhaust system, you can have the best exhaust available however if you have a restrictive/factory
cat in place your will only be able to flow what that catalytic converter is capable of, this makes
your exhaust not nearly as effective as it could be.
What's best for my vehicle?
These days with no shortage of information available on the internet research can be done easily
which can be great and very helpful working out what is best for your vehicle, application and
requirements.
However with the information overload available more often than not it can actually become more
difficult and confusing then first though. There are so many different accounts, opinions and
conflicting information available in a lot of cases it ends up all too confusing for the
consumer. Time after time we see people end up with the wrong products for their application
and requirements. At Castle Hill Exhaust Centre we are only too happy to share our many
years of experience and offer correct advice to our customers as we are passionate about
exhausts whether it be standard replacement or performance exhausts. If you have an inquiry
do not hesitate to contact us so we can get you on the right track, Our advice, quotes &
estimates are free.
Standard Exhaust Systems
Your vehicle's exhaust system has a critical role to play in the efficient operation of your vehicle and for the
safety of you and your family.
Your vehicle's exhaust system
The two functions of your exhaust are:
Removes hot poisonous gases produced by your engine, keeping these gases away from your vehicle and its occupants,
converting them into more environmentally friendly outputs.
Reduces engine noise to acceptable and legal levels, and Improves your engine's performance and fuel economy.
For good advice, a fair price and a quality exhaust system for your vehicle contact Castle Hill Exhaust Centre.
Exhaust System Components:
Many components come together to make a quality exhaust system. Each component has a different role to play. This section
of our website aims to help you understand the role of exhaust system components and the reason some fail.
Exhaust Manifold / Extractors / Headers
The exhaust manifold is at the front of your system, bolted on to the engine. In some cases the manifold will have been
replaced by extractors or headers. Manifolds are usually made out of cast iron and are prone to cracking due to the extreme
heat they have to withstand (up to 1300°C).
Engine Pipe
The engine pipe connects the manifold to the catalytic converter. Exhaust gases will have cooled down to around 1100°C by
the time they pass through the engine pipe. Again, the most common reason for engine pipe failure is cracking due to
excessive heat.
Catalytic Converter
As its name implies, this component converts the harmful gases produced by an engine. Three way converters are the most
common in today's vehicles. They contain a ceramic substrate (honeycomb like biscuit) which is impregnated with three
precious metals. As the engine's harmful gases pass through the substrate they are converted into carbon dioxide, water,
nitrogen and oxygen. This catalytic reaction starts as operating temperatures reach 200°C with optimum efficiency reached
at 600-800°C. The life expectancy of a converter is around 80,000 kilometres or 5 years, which ever comes first. When did
you last have your catalytic converter checked? Your local A1 store will be pleased to check it is operating properly &
safely .... free of charge.
Front / Centre / Intermediate Muffler
In between the catalytic converter and the rear muffler is a front / centre / intermediate assembly. In some systems this
component consists of a resonator positioned at the front and a muffler at the rear. This is where the system starts to
reduce the noise made by the engine as it goes through the combustion cycle. A resonator is a simple small muffler that
takes the resonance out of the noise going through the system. The front / centre muffler tends to be more complicated in
design so that it continues to reduce the noise.
Intermediate Pipe
An intermediate pipe connects the front assembly to the rear muffler. This component goes over or under the rear axle
dependent on the vehicle type.
Rear Muffler
This component gives the final note to your exhaust system. The temperature of the exhaust gas as it passes through the rear
muffler is around 200°C. Condensation forms in the muffler and can cause corrosion leading to system failure. Corrosion of
rear mufflers is particularly agressive on vehicles that travel short journeys.
Tail Pipe / Exhaust Tip
Your system is usually finished off with a tail pipe or exhaust tip. The tail pipe ensures that the exhaust gases pass away
from the vehicle correctly. Exhaust tips come in many sizes and styles and purely give your system a finished off look.
Some final thoughts on components
Most exhaust components are manufactured from aluminised coated mild steel which resists corrosion. Some components,
especially rear mufflers, are now being made out stainless steel or have some stainless steel content. The exhaust system
is attached underneath your vehicle by rubber hangers or mountings. These help reduce problems caused by vibration. It is
important to have the condition of these hangers checked when your vehicle is being serviced to prevent damage or cracking
to your exhaust system.
