140Km on 50ltr LPG

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Originally Posted by silverhammer

Hi all, just caught up with this thread after being away on Simpson trip. I've had sequential LPG fitted to my D1 4.6 HC auto and am very unhappy with perfomance and economy, especially towing. 30-37L/100km!!! Low revs stuff off road OK but not anything above 2500rpm it just sputters and pings.

The system is sold by Elko in Melbourne. Have had it dyno'd 74Kw petrol 64K4 LPG, fuel mix for both spot on, timing set at 10 degrees. Am ready to torch it!!!

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there is something wrong with that system. My 4.6 D1 with gas injection has more power on gas and returns around 18ltr per hundred towing my camper.

I suspect it is your mixer is at fault.
Either the installer did not realise you had the 4.6. The 4.6 needs a bigger mixer than the 3.9. or the mixer has a fault or both.
I had an issue when a spring failed in the mixer causing it to not run enough pressure. The result was that it would not rev as hard and it felt like the engine had a miss. It still had enough pressure to drive satisfactory on the highway, but on or long hills i switched back to petrol.

trobbo
Thanks for the reply...your results are what I was expecting. What brand system have you got?

Silverhammer

I would like to add that anyone whom is running gas should really set their car up to run on premium unleaded (95ron) as the benefits of gas are incresed when using a higher octane fuel.

I have not touched a 91ron or ethanol pump in years, I don't even put 91 in my tinny :).

If you tune your car to run on the higher ron petrols you will get better milage and performance (specially when running gas injection).

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Originally Posted by silverhammer

trobbo
Thanks for the reply...your results are what I was expecting. What brand system have you got?

Silverhammer

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I had my system fitted by Deacon Auto - I think it is a romano mixer

The below is lifted from their web page.
Deacon - Spare Parts


Incorrect fitment of LPG At Deacon Auto Gas we do take the time to research our systems and the cars we fit them to. We only fit Vapour injection, we also only fit it to Land Rovers, we do not waste your time or money fitting the old Gas Carbie systems as they are just more trouble than they are worth. We know this as we have anywhere from 1-5 cars per week coming in with gas related problems as they went and had a cheaper system fitted else where.
If you are going to shop around and do your homework PLEASE unsure that the people fitting your gas vapour injection system are drilling DIRECTLY into your manifold NOT just into the plenum. Drilling into the Plenum is gas vapour injection, yes, but you will not be happy with the performance, economy and running of your vehicle. How do we know?? Because we see 1-5 vehicles per week running incorrectly or complaining of poor gas economy.
In the 1st image you can see where the computer has been located, directly onto the firewall, right next to the exhaust manifold, the excessive heat will cause issues with the on board LPG computer. In the 2nd image you can see where the injector rails are mounted, where the main LPG lines are run and where the LPG injector lines are run and fitted into the top of the plenum. in the 3rd image you have a close up shot of the plenum with the injector lines drilled and tapped into it. in the 4th image you are able to see the over all view of all of the gas lines on the top of the motor.


http://www.deaconauto.com.au/images/...ER-FITMENT.jpg http://www.deaconauto.com.au/images/...-FITMENT-3.jpg http://www.deaconauto.com.au/images/...-FITMENT-1.jpg http://www.deaconauto.com.au/images/...-FITMENT-2.jpg

The next sequence of images is what makes our system fitment that little bit better than other installers.

1st: We totally remove the plenum from the vehicle to expose the intake manifold – STRIPPED MANIFOLD


https://www.aulro.com/afvb/ 2nd +3rd: We drill and tap into the appropriate intake with the nozzle angle spraying the correct way to give us better efficiency and power.-GAS INJECTOR NOZZLES

http://www.deaconauto.com.au/images/...OR-NOZZLES.jpg https://www.aulro.com/afvb/
4th: We then mount the injectors on custom brackets so when fitted are directly in line with the intake minimising restriction and flow issues.

https://www.aulro.com/afvb/
5th: When mounted the plenum hides all gas lines and looks like it has been a factory fitted option with its presentation.

http://www.deaconauto.com.au/images/...OR-FITMENT.jpg http://www.deaconauto.com.au/images/XA-UNDER-BONET.jpg
6th: the LPG on board computer is housed hidden neatly away in the ECU housing (away from any heat and water)


http://www.deaconauto.com.au/images/...ER-FITMENT.jpg 7th: The final shot of Deacon Auto Gas Lpg vapour injection fitment.

https://www.aulro.com/afvb/

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Originally Posted by dobbo

Fuel equalisation, LPG in theory should be able to run on any angle, that and the price of the gas are the main advantages of such a system.

As for economy, on my trip to Bowtells bridge on Wednesday, with Lokka as a witness I put 33L of diesel in my 4BD1 County on Tuesday arvo, the fuel light was just starting to illuminate so say at most 9l left in the tank before the fuel up. Aggressive mud tyres, full roof rack, 8 people 2 esky's and all the crap the kids need for a cold day out. My low stress engine only got 10.39l/110kms, I would love to see a V8 get 13l/100km's but cannot see how.

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Quote:"I would love to see a V8 get 13l/100km's but cannot see how."
Dobbo on a 2500klm trip in my BA GT (5.4L V8) I averaged 11l/100klm(I know you are referring to LR V8, but you did say V8), at one time I had it up to 225klm/hr and getting there the fuel usage went up tp 32l/100klm, but at ordinary cruise speeds fuel usage was between 8l and 11l/100klm, a hell of a lot better than any Rover V8, I just travelled 300klm in my 93 Disco (4l.V8 with 3.5 EFI) round trip with a 310kg army trailer, loaded with a Rover V8 on the way back and averaged 20l/100klm, I am having a Gas Injection (LPG) system fitted to my Disco, maybe then I will be able to afford to get out more, Regards Frank.

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Originally Posted by trobbo

http://www.deaconauto.com.au/images/...D-MANIFOLD.jpg 2nd +3rd: We drill and tap into the appropriate intake with the nozzle angle spraying the correct way to give us better efficiency and power.-GAS INJECTOR NOZZLES

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How do you stop metal filings from dropping inside the manifold when you drill???? Its obviously done on the vehicle?????