NP 03 gas conversion

[sinbad]

Hi
Who in Adelaide has had a NP 3.5 petrol converted to Gas in Adelaide. Whats the go injection or standard and what are the benefits of both beside price.

Also who would you recommend in Adelaide near the city Thebarton.
Any idea on latest pricing too please would be good.
Thanks

[wrexed03]

Pay the extra go injected. I went standard lpg conversion and kicking myself. Backfires when they do occur on these vehicles are expensive.
Airflow Meter $740.00
Lower part of airbox $500.00apx
Upper part of airbox $150.00apx
Have a couple of blow ups and destroy the above then multiply the above by number of blowups and the figures keep climbing.
Sad part with the Airflow meter it takes out the mesh part, you cant buy it seperatly otherwise you could salvage the AFM.
I will be injected by the end of the year. Its going to cost me more but thats life i intend on keeping the vehicle for a long time.
Theres some threads on this forum re lpg hunt around you should be able to find them.
Do it once do it right. There are three of us here on this forum who have had backfires with the standard system.

Sorry im not from Adelaide but thought i would post my experience.

Regards

[Calspec]

Sinbad,

I am no expert - I have been in the process of gaining similar info recently in anticipation of purchasing a NM/NP and converting it. Here is what I have learned.

Firstly - Injected only. Standard single point gas induction system is less efficient, loss of power more noticable and problems have been experienced with backfiring. The "injected" system uses 6 individual gas injectors at each inlet. I guess the difference is similar to comparing carby to EFI motors.

One installer I recommend (only because they were recommended to me) is in your area. Southern Automotive specialists. 59 South Rd, Hindmarsh. Page 1128 of the Adelaide yellow pages. I have spoken to them and they seem to have a lot of knowledge on the subject. Well worth a phone call if you have any more questions.

I was quoted $4100 for an injected install in an NM, don't think it would alter for an NP. Government gives you $2000 of that back on presentation of receipt to a Medicare office. Range on LPG should be 350-400km per 59 litres usuable capacity - this would depend on driving style and load. LPG tank sits in rear seat well, just put the third row seat in the shed! The injected system operates in conjunction with EFI, so vehicle starts on petrol and switches to gas when warmed up, so always keep some petrol in the tank. Any loss of power resulting by running on gas is not noticable, apparently.

Good luck

Calspec

[zacc]

i have had both , i would definately go injected less hassles lot better. as for economy i think getting 350klm to 59 ltres my be a bit generous maybe on a highway run but expect around 320 city cycle . but still cheaper than diesel running

[cutting it]

I have the injected gas system.. NL pajero... 350Km is about right, have had up to 390km so far with a mix of city and open highway.
Do the research.. but injected is the way to go... all computer controlled, no backfire issues, none of this crap about plugs.. you will find it runs better on gas as well.
One thing though.. i don't run the flash lube system...think it's a con because the injected system starts on petrol.. lubricates the valves etc.

Besides that.. the 3.5lt is lpg compatible going by mitsi site

Ray

[bazz]

Hi
Who in Adelaide has had a NP 3.5 petrol converted to Gas in Adelaide. Whats the go injection or standard and what are the benefits of both beside price.

Also who would you recommend in Adelaide near the city Thebarton.
Any idea on latest pricing too please would be good.
Thanks

I have a non injected system on a 2003NP with 3.5 motor. Installed at about 50,000 kms, have now done over 60,000 kms since installation. Estimated fuel savings so far at about 10 cents per km is $6,000. Cost of installation was about $2,300 versus injection system roughly $2,000 more. But I have paid out at least $2,000 in repairs due to backfires, plus the inconvenience. So go for the injected system.

[wrexed03]

I feel your pain Bazz. Going injected route now due to above mentioned issues. Have replacement parts now for all the broken bits. I will be injected within the next couple of weeks. No more explosions. Will take longer to re coupe the costs but i enjoy the vehicle. Aside from the gas problems.

Regards

[sinbad]

Thanks for the replay's looks like injected is the way to go then,
Any ideas on a good fitting shop and what sort of prices, also are there different versions or company's that do injected ?

I don't think i can get the gov rebate back, because i get an allowance to use my Paj for work use. but not sure.

[beaky]

Thanks for the replay's looks like injected is the way to go then,
Any ideas on a good fitting shop and what sort of prices, also are there different versions or company's that do injected ?

I don't think i can get the gov rebate back, because i get an allowance to use my Paj for work use. but not sure.

just had mine done at autotech main north rd enfield $4400 they used an Impco injected system nice neat instal

[cutting it]

Sinbad,

The only way you don't get the rebate is if your car is registed as a commercial vechile... technically you probably shouldn't get it... but if it's a private registed car... you may just wing it... make some calls

[Calspec]

Sinbad,

You may like to get in touch with MegaGas Australia, OG Rd, Klemzig. They are the manufacturers/suppliers of components for the "Sequential Vapour Injection" LPG systems. I have been informed that they are the persons best able to direct you to an installer of the injected gas system. They have a webiste: www.megagas.com.au


Cheers,

Calspec

[wrexed03]

Well i bit the bullet and finally done it. My NM is now running Sequential LPG injection. Yes its cost me more this time around since i paid for the initial install just on 12 months ago. (Mixer between throttle body and AFM setup)
My new gas system is a Lo Gas sequential system.
Powerwise feels better than petrol. Idles great and drives great. During switch over between fuels you cant really tell unless your looking at the lpg guage and listening for the audible beeps.
Mileage wise dont know yet havent gone through my first tank yet.
Really happy should have done this first time around would have saved me bucket loads of cash due to backfires previously.
One thing i will advise if your thinking about lpg just go the injected route.
Pay the extra now and enjoy. Peace of mind.

Regards

[thorno]

I have an '03 NP 3.5 with the normal LPG setup. I had a couple of backfires early on, but have done 20,000k's now with no problems. Getting 310-340 k's from the tank. I'm very happy with the standard setup.

[Moriarty]

Owww. I didn't know about back firing problems. I have a 03 NP on gas since 11000km and have not had this problem ever in 65000km. I must be lucky.
It is a standard conversion (not injected).

Does injected give better economy? I get around 20litre/100km in town and around 15 l/100km on flat highway running. On a round trip Toowoomba - Brisbane - Toowoomba with city running in Brisbane I average 18l.100km consistently.

Cheers

David

[Calspec]

David,

Economy sounds good, don't think there is a huge difference between the two. Most reports I have heard seem to center around the NM. I know the first NP's ran the same motor, so unless they changed something in the breathing of the motor, would expect similar problems could be experienced with 3.5 NP. I understand that no choice is offered with 3.8 due to emmision regs - sequential injection only.

I am yet to get my Paj, pick it up in a few weeks, but from what I've heard, the extra $300-400 to go with the seqential system seems to be cheap insurance against back fires and resulting possible air-box/metering damage.


Cheers,

Calspec