Thread: LPG conversion for 99 P38

Hello all as well,

I am also interested in this option for a 98 hse, I have heard that the gas injection is the better option but would like to here from people with actual experience once conversion working. I am in the Canberra Sydney area if anyone knows a good fitter as well.

Cheers
Craig

Hi Guys,

This has been pretty much done to death . If you do a search you will find plenty of Info. Personally I would go with gas injection from a reputable land-rover specialist.

http://www.aulro.com/afvb/technical-...hlight=LPG+P38
http://www.aulro.com/afvb/wa-aulroia...hlight=LPG+P38
http://www.aulro.com/afvb/range-rove...hlight=LPG+P38
http://www.aulro.com/afvb/technical-...hlight=LPG+P38
http://www.aulro.com/afvb/technical-...hlight=LPG+P38

There you go, i've done the hardwork for you!

You could also check out rangerovers.net as there are heaps of poms with LPG on there P38's.

Stu

Thanks 81 Stubee, for all those links.

I am still getting some confused signals about the right system to use for the Thor type Rangies. Some seem to the think that the Impco mixer system is fine - LP Gas1 and AG Autogas in Melbourne both reckon its fine and will guarantee for 3 years against backfires. But there are those in this forum who are adamant that the gas vapour system is the only way to go.

The Impco is cheaper - best price so far is $3100. But they reckon fuel economy is 20% worse. And there is the possibility of destructive backfires.

The gas vapour injection system is more expensive - a whopping $6700 is the only price I've heard, here on the forum, though Ron B reckons he's got a cheaper source, though how much cheaper I don't know. I'll ring them tomorrow to find out. But - no backfires, and roughly the same economy as petrol.

If there really are backfire problems with the Impco, that rules it out. But I've had an Impco system on my '92 3.9 for the last 4 years and it has been faultless. But my 99 has the Thor system, so its a different kettle of fish.

I suppose what I'd really like to hear is experience of people with 99 on models on both systems. Is the gas vapour system worth the extra cash?

Willem

I firmly believe that a Gas Injection system is the only way to go. I'm not saying a mixer system won't work and many people have had great success, especially with the newer electronicly controlled type. But bear in mind that rangies already have average fuel economy so add 20% to that figure. You are also limited by tank size as you can only put a donut tank in the spare wheel well, which is about ~80L unless put one across the load space.

IMHO you are effectively putting a Carburettor on a car that was meant to be injected. A perfectly tuned carburettor will run perfectly and give great economy until you slightly change its operating parameters, whether it be dodgy batch of fuel, really cold snap or many other things. A computerised injection system can compensate for all these variables.

I had a quote from Deacon Auto of about $5100 for injection on GEMS, they said there was a better IMPCO injection system for about $6200 for the THOR motor but not worth it on GEMS as the BOSCH system can compensate more. Deacon are meant to be really good and do a great job, but can be a bit pricey.

Hope this helps.

Stu

P.S. Congrats on taking the plunge and getting a P38

Hi Willem,

I had vapour on a D1. It was OK but economy was lousy (170 - 220 km for 55L or around 30L/100km). Power was OK but i did get backfires which split the intake pipe. I have installed gas injection on my P38. Bloody brilliant! I cannot notice a power drop and it runs at about 15l/100 km according to the computer (need to check that against that real km and litres) (also got a Haltech installed and dyno - both petrol and LPG about 97kw at the wheels) although the power is distributed along the curve a bit different for LPG (lower at low revs when compared to petrol) which makes it a bit sluggish off the mark on gas. once rolling it is fine.

Mister Gas (Peter) in Sydney did mine for $4600 with a 72L donut tank. So far all seems excellent. The shop looks a bit dodgy but the quality of work was good and he had done a few P38's which is why i went to him rather than others.
PM me a contact number if you want to talk about it. I would also check out liquid gas injection (better economy and power than petrol supposedly) which has just starting coming out. I know Peter has done a couple although i am not sure how much to install.

Cheers,
Remy

I am waiting for my 98HSE to arrive home any minute now, then I will take it for a test drive. We have just had Gas Injection put on. Will let ya know soon.
Shano

I have done the gas injection on the wifes 95 p38, best thing we did! got told buy 3 shops that it can't be done before i got to him. Get about 300- 350 ks (around town) out of 60-65L of gas. you can't notice a power difference with the foot to the floor on gas or fuel. use a donut tank where the spare wheel was. Spare is now mounted in the boot

if people are looking for a good guy to use around A.C.T go see ace gas conversions, he was great, have had it in the car for about 3 months now with out any problems

Our gas guy tried to talk us out of injected, I have no idea why as I have heard of a lot of problems with the mixer set up. Anyway looking forward to the cheaper fuel for a few years until the gas excise comes into effect!!
Shano