Here at Speedy’s, we specialize in custom exhausts. Offering 1¼” to 2 ½” press bent systems and 1” to 6” mandrel bent systems. Available in mild steel or stainless steel. We do offer stainless welding and tigging. We can make your system to any requirements, to suit your engine….
Because we custom make it, you can add or take out pretty much whatever you like, making your system ideal for when you are on the race track or on the street.
When it comes to your standard system’s you have two options…
Power, precision, performance and pitch all in one package. Do you want to increase your cars (hp/kw), hear a sportier exhaust note, and get better fuel economy without compromising the ground clearance. We make our performance systems with all of these features in mind to give you the best all round sports exhaust.
Powerful Reasons for choosing a Sports System.
Improved fuel economy
We can help you get the most out of your vehicles exhaust system.
Firstly, the engine has to work much harder to force the exhaust gases out of the combustion chamber. Secondly, the engine cannot discard burnt exhaust gases out of the combustion chamber efficiently. This leaves exhaust gases in the combustion chamber to dilute incoming air/fuel mixtures and rob your engine of horsepower.
Installing extractors/dump pipe and a sports system allows the exhaust gases to flow more freely and reduce back pressure within the exhaust system. This will provide more horsepower and torque by drawing spent exhaust gases out of the combustion chamber through the process known as scavenging. As well as better power and torque, you often get better fuel economy by reducing back pressure. Here at Speedy’s we can fit a ready made sports system, or custom make one to meet your requirements.
When it comes to your Sports System’s you have two options.
Press Bent Sport Systems
Mandrel Bent Sport Systems
Extractors are usually used when the original manifold has cracked due to extreme heat, or if you want more performance or fuel economy out of your vehicle.
We fit and recommend Genie, Pacemaker, Wild Cat, Redback, X Force, Zetti, Hi Tech, Hurricane, Boss, Lukey/Motivator and Hm headers and extractors.
How do extractors work?
This dumping cause’s turbulence in the manifold, since there is not enough space for all the exhaust gases, a higher level of engine back pressure is created, making the engine work harder to force out exhaust gases, wasting engine power.
Because the exhaust gases cannot get out of the manifold, into the exhaust system efficiently enough, some of this gas is forced back into the combustion chamber, diluting the air/fuel mixture. Robing your engine of more horsepower and resulting in fuel combustion efficiency being reduced, causing the engine to run hotter and wear faster.
Why are extractors not fitted as standard equipment?
- Extractors cannot be made on a high speed production line as easily as compact cast iron manifolds.
- Extractors are slightly more expensive to produce then standard manifolds.
Why should I choose/use extractors?
Extractors provide your vehicle with more power and more economy. Typical power increases of 5-15% are common. With even more horsepower increase possible by fitting a larger more free flowing exhaust system, creating a smoother and powerful ride.
This component is a very important part of your exhaust system. It converts all the harmful gases produced by an engine into environmentally acceptable carbon dioxide, nitrogen, oxygen and water. Our catalytic converters are constructed from stainless steel and have a ceramic substrate internal, a honeycomb like structure. Our catalytic converters comply with Australian standards, so when you use our catalytic converters you are helping to keep our air clean.
We also have a wide range of high flow cats available in polished stainless steel for that show car look. Give us a call or come in and speak to the guys about what we can do for your system.
We have a wide variety of cannons ranging form 4” to 12” round and oval, in stainless steel or titanium*.
( * sizes are restricted)
Resonator (Hot Dog)
A resonator or hot dog as it is known in the industry is a “little muffler”, used to help quieten down exhaust systems. Made with either a perforated or fluted inner lining it has a straight throw design which does not restrict the flow of exhaust gases, but does reduce the noise. Most commonly used on sport’s system, but can be used on standard systems.
Flex Pipes are mainly designed for east to west engines. These engines place more stress on the exhaust systems because of the way they move towards and away from the exhaust. A flex pipe is placed in the exhaust system because it can absorb engine vibration which reduces the vibration transmitted to the exhaust system and the motor vehicle body, helping to take the stress out of the exhaust system. Flex pipe are also sometimes used in north to south engines and always on diesel engines.