Diesel to Gas

Submitted: Monday, May 09, 2011 at 21:46
ThreadID: 86179 Views:2317 Replies:7 FollowUps:5
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Hi guys

I was all set to get a Nissan Patrol and had waded through all that Toyota v Nissan - Petrol v Diesel - Auto v manual debates I had thought - and then when I walked into Nissan the other day they tell me I should be going for a Pathfinder cos of bigger torque.
So, my query is - seeing that these seem to be all diesel - can they ever be converted to gas?. Although there is no van to tow yet - it will be at least 22-24ft I would say.
Any thoughts on the vehicle choice or if diesels can be converted or not?

Cheers

Rob

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Reply By: wizzer73 - Monday, May 09, 2011 at 23:45

Monday, May 09, 2011 at 23:45
I don't think you completely change a diesel to run on lpg but you inject lpg to help with the burning of the diesel.
Have a look at this website for info
http://www.dieselgasaustralia.com.au/

cheers
wizzer
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Follow Up By: goddosglory - Tuesday, May 10, 2011 at 13:45

Tuesday, May 10, 2011 at 13:45
any mods to a diesel engine shorten the life expectancy....gas tanks take up a lot of space...once you get out of the city ..gas is not so readilly available..or cheap
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Reply By: TerraFirma - Monday, May 09, 2011 at 23:58

Monday, May 09, 2011 at 23:58
Gas gives you cheap refills per litre but you need more of them and you can't hold enough for extra long distances, Diesel gives you range per tank but at a higher cost. Diesel prices at the moment need explanation by the government...You can add gas to diesel but not replace diesel.
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Reply By: Member - Doug T (NT) - Tuesday, May 10, 2011 at 05:29

Tuesday, May 10, 2011 at 05:29
Up to 24ft ....I'd be looking at a Ford F250, and before you say ...to expensive on fuel do some research on them.

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Follow Up By: Member - Doug T (NT) - Tuesday, May 10, 2011 at 05:40

Tuesday, May 10, 2011 at 05:40
This might even be a better way to go.

The All-New Ford Ranger

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Follow Up By: Bonz (Vic) - Tuesday, May 10, 2011 at 20:07

Tuesday, May 10, 2011 at 20:07
the ranger looks like an excellent choice, I may go down that path one day
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Reply By: Robin Miller - Tuesday, May 10, 2011 at 09:58

Tuesday, May 10, 2011 at 09:58
Hi Rob

They are not all diesel - we have both late model petrol Pathfinder and Patrol in our family.

The Pathy is cute but Patrol is more capable though and both can go on gas
but Patrol does it better.

The compression ratio of most diesels causes pre-ignition so while conversion is possible it tends to be difficult expensive and not usually done , this is why a mixture of diesel & gas is main way this is done.
Robin Miller

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Reply By: Member - wrapf - Tuesday, May 10, 2011 at 17:29

Tuesday, May 10, 2011 at 17:29
i went round oz with my 06 nissan patrol in 07 towing a 3 ton van the gas improved economy 4.0/lt to 5.5/lt the only place i could not get gas was between broome and port headland.i would recomend it i had mine fitted in brisbane by diesel/gas.
hope this helps
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Reply By: Member - Bruce C (NSW) - Tuesday, May 10, 2011 at 18:58

Tuesday, May 10, 2011 at 18:58
Hi Rob (Grubby),

I have diesel over gas on my turbo 1HD FT Landcruiser.
The gas ratio is only about 15% of the fuel mix when talking diesel. It is not either or but a combined fuel load.
The gas can be switched off at anytime and does not interfere with the normal settings on the diesel pump or injectors.
It is a separate system altogether but works in conjunction with the diesel.

If gas is unavailable then you run on diesel. No problems. I often run on diesel only especially when I am not towing.

Gas really only works on turbo-ed diesels as the small benefit gained on normally aspirated diesel vehicles does not warrant the cost.

However, if your vehicle is turbo-ed then the difference is startling. It is as good as a chip or a 3" exhaust.

My turbo used to suffer from serious turbo lag and when I had the injectors and pump done the difference was quite noticeable. When I had the gas done up it was heaps better again. Plenty of pickup and she performs better than a petrol cruiser on pickup and she pulls like a diesel should. Best of both worlds. Just can't get used to the smell or the roughness of a diesel engine when compared to a petrol six.

I still miss my 1FZ FE 80.

Cheers, Bruce.
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Follow Up By: Member - Bruce C (NSW) - Tuesday, May 10, 2011 at 19:08

Tuesday, May 10, 2011 at 19:08
I should have added that because the amount of gas used is small, a much smaller gas tank is required. My tank fits up inside the chassis and only hangs down a small amount. The exhaust had to be rerouted to allow the gas tank to take its place.

My spare tyre is still fitted under the rear of the vehicle as it was when it the vehicle was made.
Bruce.
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Follow Up By: Member - RFLundgren (NSW) - Wednesday, May 11, 2011 at 00:16

Wednesday, May 11, 2011 at 00:16
I am with Bruce. I have a GU Patrol that runs diesel / gas and the difference is astounding.

Towing is now enjoyable, and although many people want to do it for the economy, that is not really the aim of the exercise. What it will give you in increased power and torque to the tune of about 30% or so. It does also lower your overall per litre fuel cost considering the price of gas.

I run a 28 litre usable tank and go through about 1 1/2 tanks to the 125 litres of diesel. Not towing that gives me somewhere between 1200 - 1300 kms / tank. Towing takes it down to about 900 or so. I am running around 25 - 30% gas injection. Mine paid for itself within the first year (although at the time was living in WA and got the additional rebate back)

Something to consider if you do go for a diesel.
Cheers

Richard

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Reply By: Grubby - Sunday, May 15, 2011 at 19:46

Sunday, May 15, 2011 at 19:46
Thanks for your replies everyone - sorry it took me a while to get back to it all - I have been away in my little 'wizbanger' as Bruce would call it LOL.
I have a lot more to think about it seems. So many decisions - eekkkk.

Cheers

Rob

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