adding LPG to Nissan Patrol 3ltr turbo (2004 model)

Don't think anyone is game. It would void the warranty

Somebody (either on this forum or the Patrol forum) has already done this mod. I think you'll find it actually LOWERS the EGT.

Giggi, good timing of your question. Where are you?

I'm in WA and am about to have my 2005 GU series IV 3L fitted with the Diesel Gas Australia system at United Fuel Injection (in two weeks).

I have also been lead to believe that pre-turbo exhaust temp can be lower if the gas injection rate is set at a sensibly low level. To give reasonable power increase and better efficiency. However I have heard several cases of getting big power figures at the risk of raising exhaust temp above safe levels.

Has anyone on the forum actually had their 4x4 fitted with a Diesel Gas Australia system.

I have seen the system fitted to several other vehicles a Discovery td5 and Cruiser 100 series GXL 4.2TD but really want to see it on another GU Patrol to find out if there are any specific issues regarding exhaust modifications and other fitting issues.

I am also interested if other GU owners have fitted an Exhaust gas temp gauge or boost gauge.

I will post details of how it goes after fitting and will get it on the dyno before and after to see the difference.

Geordie

Giggi,

We had our 2004 3ltr Patrol fitted with "diesel-gas" in Feb this year. I cannot speak highly enough out the system. Gained over 25kw of extra power with a set-up that is mid range between power and economy. The power is instant when you put your foot down and it takes a bit of getting used to as it is not like driving a diesel at all. My biggest problem is now trying to get the wife out of the drivers seat and to stop driving my car!
We do lots of towing with a camper trailer and now have less of the auto dropping down a gears. As far as cooling goes, there is no problem as it seems to run cooler with the gas. Fuel economy is great and getting about an extra 200kms from the tank. My Nissan dealer has had no bad reports about the gas fitted to several Patrols and Navara's coming through the branch and have been told there is no problem with the warranty. Got $3000 back from the gov. for the conversion so only cost $1000. Best thing the little Johnny has done!
I wish you all the best in your quest.

Regards,

Chris Harvey

G'day Giggi,
We did a GU 3Ltr Turbo 5spd. Gained 30% in fuel economy & 40% at the rear wheels.
36ltrs usable tank under the belly with an exhaust mod. Filler in the standard filler hatch.
Completely different vehicle to drive with the gas switched on.

Regards
Dallas

Hey Giggi,
Sorry mate, i just realised i didn't actually address your concerns mate.
The beauty of doing the lpg conversions on the diesels is that the diesel fuel is basically completely burnt while it's still in the cylinder instead of it continueing to burn as it goes out through the exhaust prots accross the trubo etc & warming your exhaust pipe for you. This means that yes you get energy that you weren't getting before because we're burning more of that diesel portion> Also mate, it actually reduces the temp's at the turbo because you are only having exhaust GASSES pass over it now instead of an actual flame front of burning diesel so trubo longevity is improved. PLUS because lpg is a controlled & stable flame front, the Diesel KNOCK is reduced in a big way, reducing the hammer effect on engine internals. All round mate, putting gas onto the diesels increases the engine life as long as it's done well of course.

Regards
Dallas Green