RRC 3.9 efi on LPG

[discowoman]

as per the title, been looking at these (im missing the V8 burble - but not the fuel costs).. now in real terms, how does the 3.9 on LPG compare to a diesel 200/300? 
sorry to say it'll be a 'chelsea tractor' with the odd bit of greenlaning thrown in perhaps once a year, so I need to know what the running costs should be based on 5000 miles a year - mainly around town .
We used to run a 3.5 V8 on petrol and were getting an average of 18mpg - so if its half the price then that equates to 36 miles to the same amount of cash? is that correct?
Also as the one im looking t is on an F pate - is there anything that should be a first port of call to check out?
Final question, does the LPG system need to be serviced???

[MrTFWitt]

Half price is a bit optimistic as it uses more lpg but this is offset by the lower price.

http://www.lpg-vehicles.co.uk/ has lots of info but reckon on only a 40% saving.

http://www.go-lpg.co.uk/range.html Has some figures on running a 3.9i and claim 37.1 Mpg


From personal experience I have had an LPG vehicle and probably wont have another.

- Mine did 75 miles on a full tank of LPG and sputtered to a halt
- The boot was half taken up with a depth charge like cylinder and I didnt want to stack stuff on top of it.
- Filling up was tricky, lots of safety features on the forecourt equipment and it took 10 minutes of mucking about to get it connected properly
- went past five stations before I found any LPG
- You cant take one on the Eurotunnel, so no booze cruises with it, not that you would get much in the boot!


On only 5,000 miles a year its going to take a while to offset the £2,000 conversion.
This will take less time if you are heading into London regularly as LPG vehicle are currently congestion charge exempt.

Might be cheaper to buy one thats already been converted but make sure it comes with an installation certificate, mine didnt so I sold to to a Polish chap for export.

[Discopoo]

Buy the right one and have it serviced and it is the same as a Deisel to run. I have a 200tdi Disco and my Bro runs a RRC on Gas. He went for the underslung tanks and about 140 miles on 60 ltrs. At anywhere between 45 and 55p a litre it works out at about 36-40 to the gallon, better than my tdi.

[discowoman]

Thanks guys, yes it has already been converted - I think the tank is in the boot (still waiting for pictures), have owned and run several V8 RR's in the past and miss them - but with the price of fuel at the moment its a worry with the cost of filling up - hence looking at LPG converts.
this is the RR ( I have dealt with him before so its not an unknown quantity)

http://www.swapz.co.uk/swapz/automotive/motorcycles/rangerover_vogue_v8_gas_converted_f_reg/

[Bush Tucker Man]

Just looked at a site I was told about that offers LPG conversions for the (V8 engined) XJR & XKR
£2,950 :shock: :shock:

http://www.jaguarfuelconversions.co.uk/

However, it does look a nice neat application in the N/A engine bay





I was also told they offered a diesel conversion for the XJ40's, & used the Nissan 3.5 :-k

[Range Rover Blues]

Mt LSE will do 12.5mpg, so it's costing around 20p/mile to run which is about on a par with the 300TDi at just below 30 mpg.  Blue is on a single point draw through system and only a 3.9 so it's better at around 17.5p/mile.

The 'best' ones are the old 3.5EFi when running properly.

[andrew2986]

OK, well im getting (on average) 230 miles out of 100lt of gas.  mine is a 97 d1 3.9 efi with 265/75 tyres. Ive just gone over 150,000 on the speedo

Andy

[carracarra13]

I run a 3.9 v8 on gas and its worth considering, Ive just done away with my cill tanks (kept nearly ripping them off) so got a 115 leater in the boot
still leaves me with plenty of room, cheep to run Im a hard driver as in heavy foot but out of £25 worth of gas 120 miles, maintence same as petrol with ane extra filter (gas one) ours only runs lpg, but I would not recomd this rought in case you get cought out duel is allways a good way to go then you got backup

[hairyasswelder]

The 'best' ones are the old 3.5EFi when running properly.

Now you coming round to my way of thinking  :lol: :lol: :lol: :lol: :lol:

When mine was standard  it would do 14 mpg round town and 17 on a run @ 45p litre ish

Now it is slightly modded  :-k I have stopped counting  :'( :'( :'( :'( :'( :'( and the price has gone up  :(

[Range Rover Blues]

The 'best' ones are the old 3.5EFi when running properly.

Now you coming round to my way of thinking  :lol: :lol: :lol: :lol: :lol:

Mine'll still beat yours from the lights :twisted:

[carracarra13]

oh and a ps on the gas as the tank gets lower you will notice a slight loss in power but with a engin that big well can live with that :D

[hairyasswelder]

The 'best' ones are the old 3.5EFi when running properly.

Now you coming round to my way of thinking  :lol: :lol: :lol: :lol: :lol:

Mine'll still beat yours from the lights :twisted:

Yours eats most things from the lights  :clap: :clap:

[Range Rover Blues]

oh and a ps on the gas as the tank gets lower you will notice a slight loss in power but with a engin that big well can live with that :D

Hmmmm :-k not sure about that one, there is a pressure regulator in the front for just that reason.  Mine are still going like stink when the gas runs out.

[ukmudmaster]

Just a thought, the Congestion charge exemption does not apply to converted cars, so check this out before you spend on a system. Decided not to do mine as I will not get a return on my low annual milage.
Dave

[Range Rover Blues]

But you can apply for a cheapo parking permit in Sheffield with a LPG conversion.

[carracarra13]

since new tank put in you are right now every thing working well no power loss at all  :dance:

[Reggieroo]

They all seem to be a little different, mines a 3.9 EFI & I don't think its cheap to run anymore with the price of LPG. I get on average 150-160 miles out of a 90 litre tank. Its also under powered but still sounds nice. If I had a choice of diesel or V8 LPG it would be V8 LPG just because I don't really like driving diesels much.

Quite simply I don't think there is a cheap answer to driving 4x4s but we still drive them.................. :-k

I drove from Coventry to Evesham (35 miles) the other day & it cost me £10.78 at 59.9 per litre, I can do that in my 4.4 V8 petrol BMW for around that sort of cash, there & back for £20.

Basically when LPG was 32p per litre it was cheaper to run but now its around the same as my car.

[Range Rover Blues]

Very true, LPG has seen an effective 50%Vrise compared to 35% at a guess for petrol. It's as much about us being ale to keepo the cars we like than a sensible buying statergy for a new(er) car.

but if you like V8 then go LPG, it's kinder to the engine, cleaner, makes the oil last longer and doesn't poisen you at the pump like petrol does (no benzine).

[carracarra13]

have to admit had a better company give the old gas system the once over (glad I listened to vb8money pit he"ll no what Im refering to) stuck the laptop on it and running so smooth now and put in 80ltr and got 189.6 miles and still got us to the petrol station

[discowoman]

Well I decided in the end to get something different, so ended up with a 2.5 Pajero SWB. :D
crap fuel economy - but a lovely ride, and lots of toys to play with  :drool:

[carracarra13]

you wont regret that they are very comfey, only thing I will say is keep an eye on the head gasket DONT LET IT OVERHEAT, hope you have as much fun out of yours as we did with ours