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FAQs

We appreciate that the LPG Conversion process can be at times confusing. To make things clearer we have created a series of frequently asked questions for your reference.

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1.0 | What is an LPG Conversion?
1.1 | How long does an LPG Conversion take?
1.2 | How much does an LPG Conversion cost?
1.3 | Can my car be converted to Liquid LPG?
1.4 | Is Liquid LPG safe?
1.5 | What warranty applies?
1.6 | Will an LPG Conversion affect the value of my car?
1.7 | How do I fill up with LPG?
1.8 | Is driving a Liquid LPG car complicated?
1.9 | Does my car still need petrol after a Liquid LPG conversion?
2.0 | What’s the Difference Between ‘Liquid LPG’ and ‘Vapour LPG’?
2.1 | How does Orbital's Liquid LPG system work?
2.2 | Will my vehicle be less powerful when operating on LPG?
2.3 | Does a Liquid LPG system need servicing?
2.4 | How much money can I save by converting to Liquid LPG?

1.0 | What is an LPG Conversion?

An LPG conversion involves adding an LPG fuel system to your vehicle, so that the vehicle runs on LPG as well as petrol. LPG conversions are conducted by qualified LPG Mechanics in specialist workshops. There are many of these LPG workshops nationwide and they source LPG systems from many different companies both in Australia and overseas.

1.1 | How long does an LPG Conversion take?

Generally 2-3 days. If you are having your vehicle converted at Orbital’s Conversion Centre, why not ask our staff about the possibility of a loan vehicle.

1.2 | How much does an LPG Conversion cost?

There is no stock-standard price for an LPG Conversion. A number of factors can affect the cost. These factors may include:

  • The vehicle make, model and engine capacity
  • The brand and quality of equipment being fitted
  • Any included extras. E.g. spare wheel brackets or covers, a full tank of LPG, peace of mind inspection at 1500km
  • Manufacturer or installer warranties

The time required to conduct an installation can also affect the final price. Some installers have a lot of experience in fitting a particular brand of equipment and will be able to install it quite quickly. Other installers may prefer to allocate more time so that they can check that everything is running perfectly before handing the keys back to you.

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1.3 | Can my car be converted to Liquid LPG?

We offer Liquid LPG conversion kits for a variety of makes and models. Generally, we offer kits for Ford, Holden, HSV, Toyota, Subaru, Mitsubishi and Hyundai. Our engineers regularly develop new conversion kits based on popular demand.

If your vehicle does not appear in our Liquid LPG Kits section, it is most likely that we simply haven’t worked on developing a kit for your vehicle yet. It may also mean that there is a specific limitation of your make/model, such as engine incompatibility or space restrictions.

 
Conversion Kits

1.4 | Is Liquid LPG safe?

Absolutely - Liquid LPG injection systems are not only extensively controlled to strict safety standards by our own engineers; They are regulated by strict Australian government standards and requirements which we strive to meet and exceed. LPG systems have a number of fail-safes such as defaulting to petrol if any problems are detected or shutting down in the event of an accident.

1.5 | What warranty applies?

All Orbital Liquid LPG systems come with a 3 year / 150,000 km warranty.

1.6 | Will an LPG Conversion affect the value of my car?

Yes – LPG is generally a highly desirable feature in a car. Since the biggest drawback of LPG motoring is the initial installation, having a vehicle that already has it is a huge asset. Liquid LPG can increase the resale value of your car.

1.7 | How do I fill up with LPG?

Over 3000 petrol stations around Australia offer LPG. The LPG fuel filler sits right next to your petrol filler. The LPG Bowser has a nozzle that screws onto the LPG filler – this keeps the LPG safely contained whilst you fill the vehicle. It’s easy and safe and nearly 500,000 motorists do it regularly.

1.8 | Is driving a Liquid LPG car complicated?

No! There is no extra work in driving an LPG car over a petrol car. Your LPG fuel gauge sits in a convenient location on your dash or console, and our advanced Liquid LPG system automatically monitors and adjusts whether your car should be using LPG or Unleaded fuel.

1.9 | Does my car still need petrol after a Liquid LPG conversion?

After Liquid LPG has been installed, your vehicle will still require petrol to operate correctly. However the amount of petrol you will use will be greatly reduced. The Liquid LPG system uses petrol to start and lubricate the engine and as a secondary source of fuel.

On some performance cars, the Liquid LPG system has been programmed to temporarily switch the engine back to Petrol at very high loads. This ensures durability of the exhaust emissions components under the most extreme conditions. You won’t notice it happening but when it does; you can be assured that the high load engine protection measures that the manufacturer developed remain unaffected.

2.0 | What’s the Difference Between ‘Liquid LPG’ and ‘Vapour LPG’?

LPG systems can be broken into two main types known as, Vapour and Liquid. Vapour LPG systems introduce LPG into the engine as a vapour, while Liquid LPG systems introduce LPG into the engine as a Liquid.

Vapour LPG systems have been around for a number of decades and were the original style of system used to convert vehicles to LPG. While these systems are relatively cheap and do offer fuel savings, they have a number of drawbacks including, loss of power and increased maintenance costs.

Conventional LPG systems turn LPG into a vapour to inject into the manifold. This change in state leads to a build-up of contaminants in the LPG system components, which then require regular servicing.

Liquid LPG systems were developed to eliminate these drawbacks and increase potential savings. Orbital is one of only two companies in Australia that offers this state of the art technology.

The Orbital Liquid LPG system minimises system build-up and eliminates the costly expenses associated with the upkeep of a conventional LPG system.

By contrast the change in state in an Orbital Liquid LPG system occurs at the inlet manifold - meaning contaminants are drawn into the engine and burnt. The result is minimal system contamination and trouble free motoring.

2.1 | How does Orbital's Liquid LPG system work?

Orbital’s Liquid LPG system pumps LPG at high pressure from the tank to the vehicle’s inlet manifold through a Liquid LPG injector. The injector sprays Liquid LPG into the inlet manifold where it immediately vapourises causing the surrounding air to cool rapidly. The nozzle tip of the Liquid LPG injector can see temperatures around minus 30 degrees. This rapid cooling increases the density of the air which leads to improved engine efficiency and output. Not only is the power output improved but torque is increased at lower RPM.

The Orbital Liquid LPG system is unlike most conventional LPG conversion systems. Conventional systems take Liquid LPG from the storage tank and turn it into a vapour in a device called a converter or vapouriser. This is achieved by using heat from the vehicles cooling system. This heated LPG vapour is then fed into the manifold by either a mixer or an injector and as a result, displaces some of the incoming air. Less air and extra heat means lower engine efficiency and output when compared to petrol. A typical vapour system can restrict vehicle performance in comparison to petrol.

A specialised computer, known as an ECU, is used by the Orbital Liquid LPG system to control various components. It’s true power comes from its ability to read signals from the petrol computer and translate them in real time to the LPG injectors. LPG injection signals precisely follow the petrol fuel injection strategy whilst optimising the LPG injection timing. The ECU is calibrated with vehicle specific software. Just like a petrol computer, the ECU software is fixed by Orbital and no further adjustment is required. Other LPG computers require adjustment during installation and service in order to “tune” the system and restore it to running condition.

Orbital Liquid LPG system diagram

2.2 | Will my vehicle be less powerful when operating on LPG?

One of the main concerns car owners have when considering an LPG conversion, is that their vehicle will "lose power". With an Orbital Liquid LPG conversion this just simply isn't an issue.

A vehicle with an Orbital Liquid system produces, at the very least, the same amount of power when running on LPG, as the vehicle would running on petrol. Driving a vehicle that has been converted with an Orbital Liquid LPG conversion kit "feels" no different to driving a petrol car.

With an Orbital Liquid LPG system there is often an increase in both power and torque when compared to petrol operation.

The dyno graph below shows the performance figures achieved by one of Orbital's own vehicles. The Holden Commodore VE 6.0L produces more power and torque when running on LPG than when running on petrol.

Holden Commodore VE 6.0L Sedan

2.3 | Does a Liquid LPG system need servicing?

In short, yes. All LPG systems need servicing or maintenance but the fact is, some require more than others.

When considering an LPG conversion, most vehicle owners weigh up the price of the conversion and how long it will take to recoup the cost, without considering the consequences of choosing a cheap LPG system. Orbital's Liquid LPG system is designed to minimise system build-up and eliminate the costly expenses associated with the upkeep of a conventional LPG system.

When purchasing a conventional LPG system, many vehicle owners fail to factor in the cost of replacement filters, drainage and servicing of LPG Converters and the critical upkeep of the entire vehicle's cooling system.

Conventional LPG systems turn Liquid LPG into a vapour and then deliver this into the manifold. This change in state leads to a build-up of contaminants in LPG system components which require regular servicing to ensure continued operation.

By contrast the change in state in an Orbital Liquid LPG system occurs at the inlet manifold meaning contaminants are drawn into the engine and burnt. The result is minimal system contamination and years of trouble free motoring.

With Liquid LPG systems, servicing generally consists of a simple one hour service that involves leak checking, visual inspection of connections and fittings and connection of a diagnostic computer.

Liquid LPG systems are so reliable that the technology is now employed in more than one hundred, factory-approved, vehicle applications across Europe. In South Korea, more than one million Liquid LPG systems have been factory-fitted to Hyundai and Kia vehicles since 2002. In Australia, both Ford and Holden Special Vehicles have chosen Orbital's Liquid LPG system for their factory LPG vehicles.

2.4 | How much money can I save by converting to Liquid LPG?

Our Liquid LPG system makes running a large family vehicle as economical as most 4 cylinder petrol cars. The typical motorist can save approximately 40% on their normal petrol fuel bill just by converting to Liquid LPG.

To see how much you could save with an Orbital Liquid LPG conversion, use our savings calculator below.






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