P38s on gas

I've been down that road before on wether or not to install a multi vapour injection on mine, but couldn't see the value in it.

Just about all Land Rover mechanics i spoke to though they don't despise LPG system, they don't overly recommend them due to the slightly higher combustion temperature and the more added labour in removing all the extra hoses when needing to work on the engine i.e change a head gasket. That was the question my Land Rover asked recently when i had my gasket and camshaft changed, it would of added another $400 to the Labour cost.

My suggestion is to do a bit of research as i'm sure you're already doing, and weigh up the cost versus the bennefits to the potential long term issues and extra servicing cost.

Mine starts on petrol, and after the thermoswitch on the heat exchanger reaches 50oc it switches to gas. I agree an unknown amount of petrol is being used by the system and I think it is substantial judging by how often I have to put $20 worth of 98 in the tank.

I use gas now as a reserve source of fuel rather than the main source.

Rob

The Barra ford motor and the 3.9, 4.0 and 4.6 Rovers are the best motors for LPG. Just stick LPG sequential injection on. How often is anyone contemplating changing head gaskets in order to add in the costs of removing lpg gear first...:o

Slight increase in internal temps - not noticeable on scanguage 2. Smoother and more torquey than petrol

Cheers

Quote:

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Originally Posted by ozscott

The Barra ford motor and the 3.9, 4.0 and 4.6 Rovers are the best motors for LPG. Just stick LPG sequential injection on. How often is anyone contemplating changing head gaskets in order to add in the costs of removing lpg gear first...:o

Slight increase in internal temps - not noticeable on scanguage 2. Smoother and more torquey than petrol

Cheers

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Fair point. Which begs the question why Land Rover didn't offer a factory option for LPG and Ford did! You got to ask the question.

Yep. Seems they missed a market especially here and UK. I love mine. I firsf had a venturi system with lambda controlled main tap and idle tap and then went to BRC Impco sequential. I have had LPG on the truck for 9 yrs. Im well ahead on running costs at 18l/100k around Bris and 15 on highway with lift roof racks, 31 GG AT's, bull bar etc. Cheers mate

if anyone is still interested,,
sequential injection on a brand new 4.6 D2,
around 6kpl, flat ground, 100kph, for 100 kays, Toowoomba to Dalby.
and yes the first couple of kays are on 98.

and thats around twice as good as when towing the van;):(:D. Mind you now with the new engine there is **** all time difference caravan/no caravan.:cool:

Hey Ozscott!
How does yours start when hot?

Hi Pedro on petrol and then immediate changeover to lpg. Mine is set to change at 59 degrees C.

Cheers

I think they might have changed the mix a little (ie propane v butane) and I am only averaging 181/100k on LPG in and out to Brissy (a long way off highway running!) versus 17l/100k mid to late last year and 16.2l/100k on premium petrol. However if you work that out even on the current high LPG prices (to reflect heating requirements in Europe) for what I am paying in the Western burbs (nearly 90c per litre lpg!! - verus 84 at Shell on the north side) it costs be $16 to run the truck 100k. On petrol that same 100k costs be $30...its a no brainer. Thats a saving of $3,400 per year doing 25,000k - in fact you save more because LPG is not usually that high across the entire year, but really is 1 - 1.5 years and its all paid and you are saving $3,400 per year easy and having extra range for holiday touring and sequential is really a very slick system - auto change to and from LPG and you really dont notice it, save that LPG is slightly smoother and there is more low down torque. Power feels the same to me.

Cheers

sorry,, thats the right answer I guess:p
Mine starts first compression when cold, but when hot seems to take around 4-5 seconds to fire,, I think its trying (is?) to start on gas.