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[ V8 Engine Fitting Information ] [ Rover 3.5, 3.9, 4.2 to 4.6 Conversion ] [ LPG Conversion details ] [ Fuel Injection Section ]
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330 bhp V-Max Chipped 5.2 Rover V8 @ 36ppl LPG Duel Fuel.

Could this be
The Mother Of All Range Rovers?

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  List of LPG Fuelling stations. (new full map look up & more)
Will I really save money by Converting to LPG?
What is the difference between single-hole and 4-hole tanks?
What are the Costs and Options available?
Before you start, consider the following
LPG Frequently Asked Questions
LPG Dual Ignition Timing and Spark upgrades.
The Diesel pollution issue 'Some would think it important'
American 4 Barrel fuel-injected engines
Do you have a Brochure?
Do you have a supplier in my Country?

List of LPG Fuelling stations. 
Here you can find our unique list & maps of over 1000 (UK) LPG fuelling sites.

'Scotland, Wales and N-Ireland'

LPG has become so popular in the UK in line with Europe, thus this list has grown from under 200 locations when we started 4-5 years ago. A sure sign that LPG is still rightfully regarded as the clean fuel of the future & is here to stay.

Will I really save money by Converting to LPG?

More than just proven.

Now, with at least 5 years testing, we can assure you there is no doubt about it, if you have a V8, then you will halve your weekly, monthly and annual cost of running it!. If you have a diesel, then the direct savings are about 30%', but wider issues (dealt with later) are far cleaner emmisisons, significant power gains, longer engine life, and enhanced vehicle values to name but a few.

What is the difference between single-hole and 4-hole tanks

A brief explanation.

Essentially, there are two types; 4-hole & single-hole (and many shapes) of LPG tanks that are 2003, 67R-01 European-approved for use. Some suppliers (like us) have maintained that nothing less than a 4-hole tank is acceptable.

A 67R-01 approved LPG gas tank always requires [at least] most of the following:

Ability to withstand a continuous & intense fire without explosion. Very high impact resistance. Fittings that would break away, rather than tearing a hole in the tank. A gas filling valve. An outlet valve (with electronic shut off). A gas level float & sender, plus an 80% max fill level cut-off system. Pressure tested to well above 30bar with a max. working pressure of 20bar.

Single-hole Tanks The main differences are; all 4 functions are in one unit and failure of one part means replacement of all, also a smaller pressure relief and fill valve is used.
4-hole Tanks have separate gas valve and safety components, individually mounted within a thick steel panel (min 1.5 cm) on the LPG tank. This means all parts of the system are easily servicable, filling is much quicker, where simple maintenance and overall safety are paramount.

See our exclusive range of LPG Tank options for all Rover 4WD Models

or Download our tank brochure here
Warning, this file is 7.6mb at the moment

What are the Options available
Download programmes

Or see below
Simply click the link above and download our unique V8 conversion programmes & costs. You will see we cover almost all possible Rover V8 applications. You should easily be able to see what's best for you and your model. Why so simple? It's easy, we only do Rover V8s.

If you would like to check out the likely condition of your engine before you go any further, then this Is the web page to start with.

If you feel you need more information or specific advice, then please phone or mail us and simply ask away, we will always do our best to help.

Over the years, we have experienced so many 'one make' LPG systems (no names mentioned!), but, needless to say, we soon learnt that it's not so much the brand of the system you fit, but the relevance of the sum of its parts, that will achieve the best (or worst) for your unique Rover V8 application.
For this reason (amongst many others) we have chosen to cherry-pick the best, among all that's availabe from all possible suppliers, to make sure we offer the best conversions and component supplies, uniquely for the Rover V8.

Further Tank options (Range Rover, Land Rover 90-110 & Discovery EFi if load space loss is not a problem). Up to a 120 litre tank fitted east-west behind full rear seat. œPOA (4 hole) or 80 litre tank fitted behind rear single seat facing north-south. This allows full access to the twin rear seat and all load space behind it (suited to those with large dogs, or in need of large floor space retention). 66 litre upright Toroidal tank fitted in spare wheel compartment. (further additional œPOA to single tank price).
Very convenient as no load space is lost. Carb Models Basic kit price is œPOA less

New Single 80 Litre Ellipsoid tank to replace std. Petrol tank (see below) with Stainless Steel inner wing Petrol tank (accepts std. fuel pump and tank level gauge). Full kit with 80 Litre 4-hole ellipsoid tank and 7 Gallon Stainless Steel petrol tank etc. fitted œPOA, plus upgrade option to offer up to 140 litre total capacity with no lost load space for Discoveries, Range Rovers and some Land Rovers if combined with twin 30 or 37 litre chassis tanks offering a massive distance potential, further boosted by 7 gallons of Petrol.

Other additional tank options. As it is possible to use a combination of most of the above tank options on the same vehicle, the following additional costs would apply (prices based on a œPOA single tank conversion price as detailed above).
Additional œPOA for first extra (std type 4 hole ) tank and œPOA to œPOA for any further additional tanks as appropriate.

Before you start. consider the following.
Before you start.
First consider what you have already and its suitability to LPG conversion

Added economy & efficiency advantages are always attainable using RPi LPG upgrades such as Optimax ECU re-programming (Efi models) and RP4 cam upgrade. Plus Mallory and Electronic ignition upgrades. After all, economy comes from both cheaper fuel and increased efficiency, or at least curing the drainage of what little efficiency your engine may have now, especially if it's in High Mileage & less than perfect shape. See where to look to find out more.

The following possible V8 LPG Conversion plus engine upgrades would normally yield minimum 15-30% efficiency and power/torque gains over a std. factory new or existing engine, and vastly more than a less than perfect used engine, (you can use info on our General info page above to assess your engine's condition and available improvements.

LPG Frequently Asked Questions (Carb & EFi model Rovers).

) How do I change over my float in the LPG tank?
We have a web page that shows you in easy steps how to do this.

) I have read that there are a number of different filler connections, are these available from you?
We do the industry standard type, you will have no trouble with 99% of filling stations with this, and there are adaptors available for those LPG pumps not yet up-to-date.

Is there a dash gauge for the LPG level?
Yes, we use an LED display on most systems. However, contrary to what manufactures will tell you, they are not extremely accurate on some tank types (especially twin underneath), due to the ability to empty either tank first. We are developing a twin-gauge system that will average out the readings, but it's not too essential, as LPG will warn you before it runs out, and you still have your petrol ability.

How long would it take to install the twin under-sill tank conversion? (assuming no other work is required).
2 days normally but we are so busy we will need up to a week (or less time if you wish to come over and assist). We can arrange this with Local Accommodation and it's a great idea to learn more about how it all works, how it all fits and what to do if it needs setting up again.

Does it require any special or periodic maintenance?

There is little or no need for any further maintenance, except checking over at normal service times, although after the initial 2-500 miles the system will have settled down with respect to the diaphragm in the regulator and may need re-setting at this stage, this is why we like to put a few miles on the vehicle locally before it is collected.

How smooth is the changeover from LPG to petrol (and vice versa) with carbs? I have heard that there is a period during switch-over when the engine is starved of fuel.
Don't listen to all the rumours, they will only confuse you. There is no problem with this issue, once started on gas it will always start on gas, and if you run out of gas the switch back to petrol is instant. When you are on petrol and switch back to gas it is necessary to run the carbs out of petrol before turning the gas on, as it will "dual-fuel" and flood if you don't. This is why carb engines are suppled with a 3 position switch (not an issue with EFi).

I have been told I will need to first start my engine on Petrol, is this true?
Not at all. With systems of 15 years ago this may have been the case, but the V8 has no problem starting on LPG at all. With the EFi models the system is automatic, allowing for the engine to start and immediately switch itself to LPG, thus avoiding any risk of backfire on initial startup. This is the only reason why EFi vehicles prefer to start on petrol, and this function can be manually overridden if required.

I have also been considering the following mods;

K&N air filters, LPG really dislikes free flow on carburettor engines and you will lose engine power/efficiency not gain it.

Camshaft UpgradeThis is always a good idea & a consideration for the V8, especially on higher mileage models, This will not only prevent a worn cam from further damaging your engine, but a far more efficient RPi cam will further increase engine efficiency and power. Indeed, in most cases well beyond its previous output and economy available before the conversion and upgrade.

Stainless steel sports exhaust, this is not a problem as it will increase engine efficiency (we can supply same but fitting better).

Changing from Zenith/Stromberg to SU HIF carbs? This will make very little difference as LPG does not use any of the carb functions, only the throttles, so use whatever Carbs are in best condition.

What effect would these have on setting up an LPG conversion and how much would they cost?
If your Carbs are in need of updating we have various Carb options available.

What are the most important factors I should consider?
The most important issues are with the actual condition and specification of your engine to run LPG efficiently. If you first consult our V8 Engines in general page you can give yourself a good idea of what your engine condition is likely to be. There is little point in fitting LPG if your engine has worn camshaft or leaking head gaskets.

LPG is a higher octane than petrol, what benefit can this have?

It is a known fact that LPG is 112 octane, and petrol has continued to decrease in quality over the years and is now only 92-95 octane at best, This has caused manufacturers to not only keep lowering engine compressions but to install ignition systems with less and less ignition advance (early V8s 20 deg. and later ones only 12 deg.). Although we do not expect that adjusting your compression is a worthwhile upgrade, improving ignition spark quality and adding increased timing advance certainly is.

What can be done with ignition system quality and function (Carb Models only)

The best ignition system by far for all Carb engines is the Mallory Dual Point, which will give the slower burning LPG 8 degrees more ignition advance and almost double the spark intensity of standard electron units (higher octane requires better spark intensity to burn quicker), it will also (and perhaps most importantly) not be suffering from the normal mechanical wear that will be present in the advance system (vacuum and mechanical) and shaft of a standard older distributor. (Mallory can be found here) Luminition on an older distributor is a very poor compromise. This added attention to your conversion will make the efficiency loss of LPG almost nil for the Rover V8 with Carbs.

New New! What is your 'Advance by Retard' system?
LPG can be as economical and powerful as petrol, but the issue is with the ignition timing and spark intensity due to the slower flame front of LPG. Either upgrade to a Mallory dual-point as above (Carb type only), or fit our unique new 'Advance by Retard' system (Electronic ignition types only). We have just released this device, which replaces the original ignition amp on (or separate from) your distributor (we can supply it with a brand new distributor also), and allows you to set base timing to 18deg. thus giving a healthy 38-40 degrees of advance when on LPG. This is the answer to all LPG prayers, and, what's better, when running on petrol, it retards the ignition back to std. 8 idle - 28 deg. @4000.

See our Dual Timing upgrade and other LPG ignition issues

What is the cost of this upgrade?

Dual Timing Advance by Retard system as detailed œPOA (can also be used with above type existing electronic distributors if in very good order).

My EFi Does not have Catalysts, so why do I need Lambda probes added to my exhaust?
All later catalyst type vehicles will use the existing Lambda probes (if working correctly) to supply a looped feedback system of information to the The LPG Ecu as well as the Petrol Ecu as normal. Thus ensuring the vehicle keeps its fuel emissions as clean as possible, achieved by constantly updating engine air-fuel ratios.
For EFi vehicles without catalysts (normally Pre 93. 94), this is still an important issue with getting the best from your LPG installation, and is why all our systems employ a Lambda probe fitted to the exhaust to give the LPG ECU this same essential information.

What are the Petrol Companies saying and doing?
The Latest Brochure (BPCF026) Entitled BP AUTOGAS A Greener alternative) Available from all BP outlets states the following:

At BP we are committed to improving the quality of fuels and making a positive contribution to a cleaner environment.

By 2005 motor fuels in the UK will be manufactured to new specifications, but BP are not waiting till 2005, we are acting now, and plan to develop the UK's largest LPG retail Service Station network with at least 300 BP Autogas facilities over the next 5 years.

A cleaner Fuel for your vehicle compared to
Diesel, practically no smoke emission, zero particulate pollution, much less noise and lower nitrogen oxide emissions.
Petrol Less carbon monoxide, less carbon dioxide, less nitrogen oxide emissions.

LPG Kinder to your car. as there is minimal sooty residue build-up in your engine. Kinder to you pocket and your £1 will get you much further. BP study on the same amount of fuel produced these results on average: Petrol 89 miles. Diesel 105 miles LPG Autogas 139 miles

American 4 Barrel Fuel injected engines.

This Chevy atep-side truck is now affordable to run, and the conversion to LPG is very simple.
Chevy Step Side Chevy underbonnet.
Almost all American V8s will run happily on LPG and the savings mean you can enjoy driving the car you like more often, if not all the time.
4 barrel Mixer

One drawback at the moment is that this system requires quite a lot of bonnet clearance.
We are working on a system that works inside the Air cleaner instead of underneath it, this will close bonnet clearance by at least 4 inches and make it suitable for Rover V8 (Weber 500) applications.

Do you have a Brochure?

Sorry, we do not have a brochure available at this time. but we can print you an up-to-date information pack, although most of what you need to know is available for download from our Web Pages, as we find this is a more effective way of keeping our information up to date. Please feel free to print or reproduce any of the information contained on these pages.

If you require an information pack, please mail us your full address and give some indication of what it is you have, and what you would like to receive information on. Please be advised that we cannot print out multiple copies, so make best use of our web pages if possible (from which you can print as many copies as you wish). Also feel free to link our pages to any other web site that you feel could gain from our information. Please do not link to pages that are not in some way appropriate, especially sites that would be classed as distasteful.

The pollution issue (some would deem important).

Time to Come Clean

At last it seems this Government is waking up to the obvious, Petrol and Diesel are killing not only us, but more importantly our Children. We have already been told about the Greenhouse effect and of the effects of lead in fuel, but do you really believe that Diesel is Green? In reality it contains a cocktail of some of the most harmful chemicals known to man, especially harmful to our Children.

Current research, which won't see daylight for years, shows that fine particulate pollution PM10 carries cancer-causing, mutagenic chemicals (especially dioxins - the most dangerous group of chemicals there is) into the bottom of people's lungs, where they are bio-accumulative time bombs waiting to go off. Children are most at risk from this for several reasons; they are smaller and breath faster and are much closer to ground level where these particulates are at their most concentrated. They are more active, play outside more and their body weight is much lower so they acquire a greater level of contamination per kilo of body weight, which many experts and regulators fail to take account of.

That effectively rules diesel out in my opinion as a fuel for cities and towns, it is the worst toxic polluter there is - (do you think the Government realized just how many diesel vehicles there would be in our cities and towns by the year 2001?). You are talking almost all Company Cars, Delivery Vans, Courier Vehicles, 4WD's, RVs, Taxis, Buses and Lorries, it's a wonder we can still breath at this end of the millennium. And you can bet that the huge recent rise in Child Asthma cases is no coincidence either.

So what are the alternatives.

Electric power?. Many years of research still shows the need to carry tonnes of batteries around, and when you re-charge them the chances are the power has originated from a Nuclear or Fossil Fuel burning power station.

Steam ? Well I am Sure Fred Dibnah would recommend this one, but again, it's bulky and burns coal (oh and Fred's had his Landy converted to LPG too).

LPG? - It's been around for years. Emissions are virtually Zero, indeed there is no production car that we have seen that runs cleaner than LPG. Shell & BP (amongst others) have a commitment to install 500 more re-fueling sites. Major car companies such as Ford and Volvo (amongst others) are producing fleet vehicles to run on LPG. LPG is 112 octane, so produces no 'Pinking' like poor-grade unleaded, and will extend the life of an engine three fold due to its almost perfect clean burn and virtually zero contamination of your engine's internals And the bit most people find important (the Price) LPG is available at only 37p a litre, making it less than half the price of petrol or diesel

It is already available from over 250 outlets in the UK (with another one at least added on average every week) and for those who have their own LPG supply installed, it can be less than 22p a litre (ex VAT) (normally fleet or other large users).

All petrol engines can be easily converted to run (Dual Fuel) LPG, and the benefits will be realized immediately. The modern conversions ensure no noticeable loss of power, and give you a Dual-fuel environment with your Petrol or LPG available at the flick of a switch, doubling the range of your vehicle between fill-ups. And most importantly, in most cases effectively cutting your fuel bill by 50%, with this saving set to continue to rise due to the government's already announced plans to raise diesel and petrol prices 6% above inflation every year. Add this to ongoing oil price rises and it's easy to see the gains when LPG prices are frozen for at least 5 years. To a 4WD that covers in excess of 15,000 miles per annum, that's a saving of £1500 (about £30 per week) in the first year alone, and rising in future years when you consider the 35ppg per annum promised price rise to conventional diesel and petrol fuels

All LPG installations are carried out under COP2 (Code of practise) standards, conform to all insurance and safety regulations and are certificated, so you can be 100% sure of safety.

You will never know what you are missing until you test drive a Dual-fuel vehicle,

It's friendly to the environment and the future of our planet. Its 60% cheaper than petrol/diesel. It burns pollution-free in your engine allowing an average engine life 3 times longer than that of a conventional petrol engine.

It's a renewable source of fuel unlike coal or oil that take millions of years to form. The Government and the Queen own a number of LPG Dual-fuel vehicles as do many other prominent figures.

Conversion cost subsidies are available on vehicles under 1 year old up to 75% total cost.

The big petrol companies are actively installing hundreds of filling sites within their network of petrol stations and there are already over 250 LPG dispensers country-wide.

Much of Europe is already benefiting from a high proportion of Dual-fuel vehicles. In some countries over 30% of vehicles are Dual-fuel.

It is anticipated that there will be a healthy used market for vehicles converted to Autogas fuelling. In fact, according to a recent edition of Fleet News . . ., 'if the government sustains its support for cleaner fuels there is no reason why buyers could not end up paying a premium for green vehicles in the future.' The fact that the Queen and Government Ministers have already changed their vehicles to run on Autogas may indicate that LPG could offer a cheaper and, more importantly, cleaner alternative to petrol for towing your horses around!

Do you have a supplier in my Country?

We actively ship our parts all over the World (over 50 Countries to date). Do not worry if no one is listed in your area as we can handle all shipping details for you. And even if you have trouble speaking English, our worldwide network of customers can normally help with any Translation For European Languages.

Translation's. 'Click'

RPi Recommended Worldwide V8. Specialist's "Click"

links to other FAQ pages
[V8 Engine Fitting Information] [Rover 3.5, 3.9, 4.2 to 4.6 Conversion] [LPG Conversion details] [Fuel Injection Section]
[Weber 500 & SU Carbs ] [ Mallory Ignition Systems] [General Engine Problems] [General Information]

Prices do not include local EU.Tax.(VAT).
Prices & stock are subject to change without notice. Information and advice, as always, is free.

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