diesel/gas conversion

[gazza 1]

gooday, anyone out there had a diesel/gas conversion done on thier rigs. ihave a 4.2 turbo diesel patrol wagon 2000. Ive got mine booked in next week , just thought i should ask around for any tips i should know.
Thanks gazza

[MJP]

G'day Gazza,

Haven't had this done but would be interested to hear your thoughts on it once you have the truck back. I have the same truck and am always on the lookout for more power. Then again aren't we all?!

Mark.

[gazza 1]

G'day Gazza,

Haven't had this done but would be interested to hear your thoughts on it once you have the truck back. I have the same truck and am always on the lookout for more power. Then again aren't we all?!

Mark.

yeh no worries,i have been told anywhere between 20-25% more power and approx. 15% better fuel economy , less servicing , etc etc
Gazza

[sickgq]

Yeah, keep me in the loop to, thought about doing my self as well, would be good to see what you think

[bushy555]

There are around 20 to 25 diesel gas joints in Australia now.
Saw a 2.8litre GU done the other day. The completed finish came up so well that under the bonnet you could hardly tell that it had a conversion on it.

Apparently the dude flogged it over 500 klicks worth, fully loaded, and he said it didn't go over 11 litres/100 k. (Fairly standard wagon)
If that is true, that is fairly impressive.

[deanchristensen0001]

I have gassed my Chev 6.5 recently with Hunter Gas Technologies.

While I was there they had a 4.2 on there Dyno that had been converted by Diesel gas. They were doing a re-tune of the dieselgas setup.

Once the re-tune was done it was 47% up on power and 44% up on torque over the standard run (with the gas off)

When it arrived(dieselgas tune) the LPG was giving it about a 25% improvement in power and torque.

By properly tuning the LPG another 20% was gained. After the tune the vehicle was using less gas than the diesel gas setup, so economy was also improved.

Getting too much gas will reduce power and torque. Its a fine balance and the guys at Hunter Gas technology are passionate about getting it right.

[T_Diesel]

There is aparently an article in the October 07 4wd Monthly on Diesel/gas setups. A mate of mine with a diesel defender just got it done through a mob in Warragul, VIC and is absolutely raving about it.

Aparently he can go up hills now fully loaded in 5th gear and still accelerate up the hill. I am seriously thinking that it could be a very worth investment for the diesel go slow GQ.

[michael a]

Got it done.

my car s the white gq on the deisel gas web page. Check out dyno results.

Buy a pyro but they dont check the exhaust gas temps after installing the gas system.

mine was hitting 700 NOT HAPPY!!!!

[gazza 1]

Got it done.

my car s the white gq on the deisel gas web page. Check out dyno results.

Buy a pyro but they dont check the exhaust gas temps after installing the gas system.

mine was hitting 700 NOT HAPPY!!!!

Gooday, thanks for your imfo, i could not find your rig on the diesel/gas web site, i assume you mean diesel/gas technologys web site, i know they have a renewed site now.
thanks Gazza

[GUtripper]

Got it done.

my car s the white gq on the deisel gas web page. Check out dyno results.

Buy a pyro but they dont check the exhaust gas temps after installing the gas system.

mine was hitting 700 NOT HAPPY!!!!

Someone coreect me if I'm wrong here.

My undersatanding is that with turbo diesels, the reason you should not exceed exhaust gas temps of 500/550 is that there is so much UNBURNT fuel mixed with the exhaust gas, it could ignite post the combustion chamber and destroy your turbo, with resulting heat also burning valves, pistons etc.

So...with diesel gas, isnt the efficiency gained via the gas injection allowing up to 98% of fuel to burn in the combustion chamber, instead of the normal 80% odd? Therefore there is almost no unburnt fuel in the exhaust gas.

In that case, exhaust gas temperatures would not be so critical.

Or am I way off?

[gazza 1]

Got it done.

my car s the white gq on the deisel gas web page. Check out dyno results.

Buy a pyro but they dont check the exhaust gas temps after installing the gas system.

mine was hitting 700 NOT HAPPY!!!!

Someone coreect me if I'm wrong here.

My undersatanding is that with turbo diesels, the reason you should not exceed exhaust gas temps of 500/550 is that there is so much UNBURNT fuel mixed with the exhaust gas, it could ignite post the combustion chamber and destroy your turbo, with resulting heat also burning valves, pistons etc.

So...with diesel gas, isnt the efficiency gained via the gas injection allowing up to 98% of fuel to burn in the combustion chamber, instead of the normal 80% odd? Therefore there is almost no unburnt fuel in the exhaust gas.

In that case, exhaust gas temperatures would not be so critical.

Or am I way off?

No , i thin k you are pretty right, the gas acts as a catalyst to assist the almost the complete burn of the diesel, it also makes the motor quiter by the gas pressure in the cylinder, reduces the carbon build up wich is the unburnt diesel, theres a lot more info on the Dieselgas Technologies website
thanks Gazza

[michael a]

If the gas temps exceed 550 -600 you are causing damage to you motor gas or no gas. pistons still melt heads will still crack.

[gazza 1]

If the gas temps exceed 550 -600 you are causing damage to you motor gas or no gas. pistons still melt heads will still crack.

gooday, michael a on thier web site it is clear that when the there is a engine overheat or exhaust temp over heat the gas automatically reduces supply or shuts off, regardless of the cause. Thier web site is quite imformative.
thanks gazza

[jtraf]

so what's it worth?

[gazza 1]

so what's it worth?

depending on what size gas tank approx. $4260.00 less $2000.00 gov rebate ($3000.00 i think in Perth)
gazza

[michael a]

I have the deisel gas tech one only a map sensor. there is no exhaust temp sensor or coolant temp sensor on mine.

[gazza 1]

I have the deisel gas tech one only a map sensor. there is no exhaust temp sensor or coolant temp sensor on mine.

see page 2 of 4 third paragraph down Dieselgas Sequencial 11 vapour injection
gazza

[gazza 1]

I have the deisel gas tech one only a map sensor. there is no exhaust temp sensor or coolant temp sensor on mine.

see page 2 of 4 third paragraph down Dieselgas Sequencial 11 vapour injection
gazza

Well guys , i picked up the 4by last night after the conversion, and all i can say so far is wow . The engine noise or lack of is terrific ,i have not done any kls yet so i will keep in touch , the addittional power , i cant explain, driving home last night in 5 th gear

up a slight hill and put the foot down , it just went faster ,no down change of gears or lag.
Cheers Gazza

[allterrain2000]

So Gazza who did your conversion??

Cheers
Jase

[turps]

Would still recommend fitting a Exhuast gas temp gauge. That and fit the probe just before the turbo.

[gazza 1]

So Gazza who did your conversion??

Cheers
Jase

A guy at a1 exhausts in Pakenham .Dave Stewart, Main street Pakenham
His no is 5941-4999. It looks a really neat job, even the tank under the cab and under the bonnet is very tidy. If mum lets me go for a drive tomorrow ill let you know it goes. But it is mother-in laws birthday, so i dont like my chances.If not i have to wait till next weekend and i will let you know, cheers Gazza

[itchyvet]

I had LPG fumigation fitted to my 2.8 Td 6 by Diesel Gas Aust in November last year, here in Perth, W.A.
All up cost was just a little over $3,000 99% of which I got back via the rebates offered by Fed Govt and State Govt.
Done 9,000 K's with it now, one third of which was pulling a Cub Spacematic camper trailer for 3,000 K's, and folks, I gotta say fitting this thing was one of the best things I've ever done.
Contrary to all the claims of doom and gloom, it's been a bonus bigtime, the only down side was needing to replace the clutch/pressure plate/flywheel cause it's power increase was simply too much for the standard set up.
The engine had done 240,000 K's at instalation, and there was a build up of soot within, first I used the C.E.M. engine flush to give a clean out, and then fitted KLEENOIL bypass filter whose element gets replaced every 5,000 K's, I've noticed that the engine is slowly begining to run smoother, quieter and more frugal with the diesel, giving me more and more K's per liter every trip I go on.
The last was a Geraldton return trip which gave me $55 diesel both ways sitting on the max speed limit.
This is by far the best I've yet got outa the old girl.
Towin is now a breeze, whereas previously I'd find myself going from third into second goin up Greenmount towin the trailer, now I just leave her in fourth and let her go, no worries, flies up there.
I guess I should also point out, replaced exhaust system with 2" straight thru and she's been over the pits, so it's legit. Havent done any EG temp readings, found no irregularities with cooling system or over heating anywhere.
All in all, I'm very happy with this system, its made the Patrol a much more enjoyable vehicle to drive.
I'd recommend this system to any diesel driver wishing to increase his HP and driveability of their vehicles.
Oh, regards mileage, I get 2-3 K's more per litre when running on LPG, not much, however that's NOT the reason I had it fitted anyway, just another nice benefit.
I guess I should also point out that since the gas was fitted, all I've used for diesel is BIO from Gull, NO Dino for me.

[gazza 1]

I had LPG fumigation fitted to my 2.8 Td 6 by Diesel Gas Aust in November last year, here in Perth, W.A.
All up cost was just a little over $3,000 99% of which I got back via the rebates offered by Fed Govt and State Govt.
Done 9,000 K's with it now, one third of which was pulling a Cub Spacematic camper trailer for 3,000 K's, and folks, I gotta say fitting this thing was one of the best things I've ever done.
Contrary to all the claims of doom and gloom, it's been a bonus bigtime, the only down side was needing to replace the clutch/pressure plate/flywheel cause it's power increase was simply too much for the standard set up.
The engine had done 240,000 K's at instalation, and there was a build up of soot within, first I used the C.E.M. engine flush to give a clean out, and then fitted KLEENOIL bypass filter whose element gets replaced every 5,000 K's, I've noticed that the engine is slowly begining to run smoother, quieter and more frugal with the diesel, giving me more and more K's per liter every trip I go on.
The last was a Geraldton return trip which gave me $55 diesel both ways sitting on the max speed limit.
This is by far the best I've yet got outa the old girl.
Towin is now a breeze, whereas previously I'd find myself going from third into second goin up Greenmount towin the trailer, now I just leave her in fourth and let her go, no worries, flies up there.
I guess I should also point out, replaced exhaust system with 2" straight thru and she's been over the pits, so it's legit. Havent done any EG temp readings, found no irregularities with cooling system or over heating anywhere.
All in all, I'm very happy with this system, its made the Patrol a much more enjoyable vehicle to drive.
I'd recommend this system to any diesel driver wishing to increase his HP and driveability of their vehicles.
Oh, regards mileage, I get 2-3 K's more per litre when running on LPG, not much, however that's NOT the reason I had it fitted anyway, just another nice benefit.
I guess I should also point out that since the gas was fitted, all I've used for diesel is BIO from Gull, NO Dino for me.

Great to hear someone has some good news, and i think 2-3 k's is fantastic, thats about 20-30 % increase in fuel economy. And ocourse the extra power is great as well.There doesnt appear to be a lot to be critical of, the quieter ride. better fuel economy, more power, less servicing, better for the enviroment, better for your motor, less fuel stops,
thanks for you comments Itchyvet
Cheers Gazza

[michael a]

I read the web page the new style module must be dirrerent to mine. All I have is a map sensor to read boost pressure. There are no other sensors fitted to mine. Wether I got ripped off or not I dont know.

I would still reccomend getting a pyro gauge anyway. It is alway better to be safe than sorry. $300 is cheap insurance.

[danaz]

Are you getting 2-3k better economy per litre including the gas or is this just including deisel - Overall are you using more or less fuel (both gas and deisel).

Also, everyone getting this conversion done seems to already have a turbo. Is it worth doing if you dont have a turbo but are after a bit more economy / power?

[gazza 1]

Are you getting 2-3k better economy per litre including the gas or is this just including deisel - Overall are you using more or less fuel (both gas and deisel).

Also, everyone getting this conversion done seems to already have a turbo. Is it worth doing if you dont have a turbo but are after a bit more economy / power?

Gooday, on thier website they make a comment about naturally aspired cars also get a big increase in power and fuel economy, have a look.
at the site http://www.dieselgas.com.au/home.htm all the info you need is here. By almeans i dont mind letting you know how i go with mine
Cheers Gazza
P.s. The reps for the individual states are very helpfull

[gazza 1]

I read the web page the new style module must be dirrerent to mine. All I have is a map sensor to read boost pressure. There are no other sensors fitted to mine. Wether I got ripped off or not I dont know.

I would still reccomend getting a pyro gauge anyway. It is alway better to be safe than sorry. $300 is cheap insurance.

Gooday,Mate i must appologise , i dont know anything about a pyro gauge. How does it work ? Is it only a temp guage i will assume it cant turn off the gas or anything like that.

Thanks Gazza

[michael a]

Yeah it is just a temp gauage. I watch mine when driving mainly on large hills when I hit 550 I turn gas of at the switch so I can keep into it. With out the gas on mine will only get to 525 but with gas on can go over the 600 mark not good.

Have a look at some old post in regards to EGTs there is some intersting info.

Some people say 650 is still safe on the td42 but after seeing what 650 done to my piston and head I was not real happy with deisel gas for not checking my EGTs.

Just keep it in mind if it does exceed you may crack heads and melt pistons.

[MJP]

Hey Gazza,

Where do they put the gas tank in a GU? Do you have any pics of where it is under the truck that you can post?

Ta,
Mark

[cuzza]

If you fit it to a naturaly aspired diesel dont expect a noticible power increase, as i did it to my td42 and i ended up going a turbo as well. I got better economy but did not see a huge gain in power, it just held on better up hills. The theory that i have been lead to believe is that when fitted to a N/A vehicle you are just simply displacing oxygen and therefor not getting a complete burn. When you put the turbo on (gas on and off makes a noticible difference), more oxygen is available which leads to a more compete burn and therefor noticible difference. Just my two cents

cuzza