Gas conversion

[grandpascot]

Hi All



Has anyone ever had their Stag converted to gas. What are the pro's and cons?

[Chris.Liles]

imported post

Hi grandpascot (made-up name?!), yes someone in Norfolk converted their Stag to LPG (Autogas) several years ago.

I travelled from Norfolk to Brooklandsin his carand we got part-way around the M25 before he had to switch (seamlessly) back to petrol. My guess is that the range was around 100-125 miles, with Autogas less than half the price of petrol.

So, benefit: halved fuel costs. Downsides: Slight reduction in performance & quite large chunk of the limited boot lost for the gas tank. Also, filling stations are still few and far between, but improving daily.

Cost likely to be circa £1,500 I guess since you would be well advised to have it fitted by an LPG Association approved installer (http://www.lpga.co.uk) rather than DIY. Otherwise you could hit insurance problems now or in future.

Have I had my Stag converted - no. Why? Because doing around 3,000 miles/annum it would take me years to recover my outlay. Plus the loss of power when blasting up the gears (unless you flick over to petrol at those times which defeats some of the object)

Let me explain that I am an Autogas 'convert' myselfsince I run my 4.6 litre V8 Range Rover on gas for 95% of the time. However, it was already converted when I bought it and I do around 12,000 miles pa in that car. Overall I get a cost equivalent of 30 to 35 mpg, not bad for a loverly burbly V8 engine in a 2 tonne car with aircon & every electric bell & whistle! On petrol the consumptionwould be top teens.

For info, fuel consumption on gas is around 20% LESS than on petrol but with the cost under half of petrol, the benefit is restored. After advice from Arthur Smith (SOC stalwart) I always allow my Rangie to warm up fully before flicking over to gas (it automatically starts on petrol). This is to offset the lower lubrication factor of gas whilst the engine is at its most vulnerable i.e. when cold.

My advice? Keep your money in your pocket &/or invest it in somemore worthwhilegoodies for your Stag and enjoy the full power ofyour beautiful beast.

Chris Liles

[djw113uk]

imported post

Anyone else does this yet?

I have a BMW that runs well on gas.. nearly continuously, with only the occasional backfire making life interesting.

Also have a Range rover 3.9 on LPG, but at 10mpg it wont be about for long.

My 2.5PI now has SU's and runs LPG, but keeps killing its heads.

Stag is the next to go over, but will it be as Triumph engine or the Rover?.. What I need is a Rover injection manifold to fit the Stag.. Anyone got one?

[Stagdad]

imported post

I've just got a 3.9EFI out off a discoveryfor my stagthat came with LPG alreadyfitted so most of the work is done .came with a 90L tank which is a bit big and heavy so i would get a smaller wheel tank if i use the gas.

one thing i was a bit surprised at was how restrictive the gas ring on the plenum is ,it must cut the inlet area down by half so now I'm a bit undecided due to the loss of power it will cause.the previous owner had an extra bit of kit added which was a lamda gas control and reckoned this saved even more money on fuel.



Cheers Steve

[GDPR]

imported post

I think Top Gear should make a Stag run on cow poo like they did those Rover 214s - actually I think Top Gear should revisit the Stag, and be nice about it for a change