Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

V8 on LPG ?

Discussion in 'VF Holden Commodore (2013 - 2017)' started by Graham downunder, Jun 11, 2015.

  1. Graham downunder

    Graham downunder New Member

    Messages:
    18
    Likes Received:
    1
    Trophy Points:
    3
    Joined:
    Jun 11, 2015
    Location:
    sydney
    Members Ride:
    vf calais
    New member here, I am thinking of getting my VF Calais V wagon which is a V8 converted to LPG using the Orbital Liquid LPG system . I have two other commodores on LPG which I'm happy with ,a VY sedan 3.8 aftermarket conversion and a VZ 3.6 wagon with a factory conversion with about 330,000 kms which I'm also happy with . Does anyone have experience with a V8 on LPG and are they happy/ not happy with it ? I have a good LPG installer that I will use he says they are great on LPG as he has done a few hire cars . As I have done about 15,000 Klm in 5 months the saving is worth considering and the car will stay in the family .
     
  2. EYY

    EYY Well-Known Member

    Messages:
    4,923
    Likes Received:
    1,012
    Trophy Points:
    113
    Joined:
    Mar 6, 2011
    Location:
    Vic
    Members Ride:
    VS Statesman
    You'll get more power, and the cost of filling up is less than half of the price of petrol (here in vic, anyway). Being a liquid injected system, the mileage on gas should be about the same as petrol. At most, usage might go up by two litres/100km. Which is still well worth it.

    You'll be pretty happy with it.
     
  3. sleepa

    sleepa Shiny...

    Messages:
    923
    Likes Received:
    32
    Trophy Points:
    28
    Joined:
    Feb 23, 2010
    Location:
    Brisbane
    Members Ride:
    2010 VE SS Sportwagon, Audi A4, Combo work hack
    I have a LS1 which I converted to Vapour Injected LPG about 4 years ago, runs perfect with it, no issues, plenty of power, hardly any extra fuel usage, no complaints.
    I would do it again in a heartbeat.

    Liquid Injected LPG should get you more power and use less fuel too.
     
  4. Loaded Dice

    Loaded Dice .... Lets roll.

    Messages:
    687
    Likes Received:
    11
    Trophy Points:
    18
    Joined:
    Dec 4, 2011
    Location:
    Victoria
    Members Ride:
    MY12 SSV Redline
    Yep, same here, got the vapour injected system, uses 11.7L/100 on gas or 12.5L/100 on petrol! The liquid injection system should be even better with better than petrol power, as LPG is 107RON or if you can get straight propane, 110RON. Propane gives same economy figures, but much better power under foot, retails for about 3cpl dearer, so that makes it about 55cpl LOL!

    Other than a small leak, no probs at all with mine after 149,000Kms
     
  5. vk2him

    vk2him Member

    Messages:
    117
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Mar 14, 2015
    Location:
    Sydney
    Members Ride:
    VF SSV Redline
    Did you get the tank in the boot or the replacement wheel tank? Does the tank take up much of the boot?
     
  6. sleepa

    sleepa Shiny...

    Messages:
    923
    Likes Received:
    32
    Trophy Points:
    28
    Joined:
    Feb 23, 2010
    Location:
    Brisbane
    Members Ride:
    2010 VE SS Sportwagon, Audi A4, Combo work hack
    I got the spare wheel replacement tank, it's only around 45L but as the efficiency is better it still gets me around 330km to a tank (around town)
    They just installed a clamp on the side which the spare goes on, this one is worth it in my opinion, you still have access to nearly the whole cargo space.
     
  7. Graham downunder

    Graham downunder New Member

    Messages:
    18
    Likes Received:
    1
    Trophy Points:
    3
    Joined:
    Jun 11, 2015
    Location:
    sydney
    Members Ride:
    vf calais
    Well I've had the conversion done in the last couple of days so I must say it works perfect so far .It starts on petrol then switches to gas after 50 seconds without being able to detect it unlike my VZ factory one . Fuel economy is hard to judge so far only about 250 kms. Will keep you informed on how well it runs .
     
  8. vk2him

    vk2him Member

    Messages:
    117
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Mar 14, 2015
    Location:
    Sydney
    Members Ride:
    VF SSV Redline
    Which one did you get Graham and who installed it? Did you get the spare wheel tank or the one that takes half the boot? I'm thinking seriously myself.
     
  9. sleepa

    sleepa Shiny...

    Messages:
    923
    Likes Received:
    32
    Trophy Points:
    28
    Joined:
    Feb 23, 2010
    Location:
    Brisbane
    Members Ride:
    2010 VE SS Sportwagon, Audi A4, Combo work hack
    If it's anything like mine, then you will love it :)
     
  10. blackve76

    blackve76 Well-Known Member

    Messages:
    1,603
    Likes Received:
    374
    Trophy Points:
    83
    Joined:
    Feb 9, 2013
    Location:
    there
    Members Ride:
    VE SS ute 360rwkw N/A, 2016 VF2 SS M6

    How much? pick of under bonnet would be nice to
     
  11. Graham downunder

    Graham downunder New Member

    Messages:
    18
    Likes Received:
    1
    Trophy Points:
    3
    Joined:
    Jun 11, 2015
    Location:
    sydney
    Members Ride:
    vf calais
    VK 2him its the same as HSV use I think its Orbital autogas . Brian at NU Gas at Taren Point ( Sutherland Shire ) did it .He has a great reputation and has done work me ,my family and many people I know ,so I recommend him as do many people who have Gas cars .
    Give him a call I think it was about $4,000
    I got the tank that takes the place of the spare wheel ,who needs a spare I ride motorbikes so an electric pump and plug kit is norm for me ,plus I have roadside assist .

    blackve76 Absolutely nothing looks different under the bonnet EXCEPT the plastic cover sits about 20 mm higher . Its liquid injection not vapour like old systems .

    As for fuel consumption 320 kms used 47.74 litres @ 56cents so thats $26.75 ,now thats a lot of urban motorway driving as well as suburban stop start short hall . Thats better than I get out of my VZ wagon thats factory gas 3.6 motor ,so Im happy . I have seen as low as 7.4 litres /100 on the computer display for 25 Klm section . I suspect fuel economy will be about 10 more used than petrol BUT that does depend on the right foot !!
     
  12. Loaded Dice

    Loaded Dice .... Lets roll.

    Messages:
    687
    Likes Received:
    11
    Trophy Points:
    18
    Joined:
    Dec 4, 2011
    Location:
    Victoria
    Members Ride:
    MY12 SSV Redline
    Trip computer lies, you need to work it out properly by what you put in / kms travelled.
     
  13. Graham downunder

    Graham downunder New Member

    Messages:
    18
    Likes Received:
    1
    Trophy Points:
    3
    Joined:
    Jun 11, 2015
    Location:
    sydney
    Members Ride:
    vf calais
    We will see with time what we get, but the 320 kms was from full to full for 47.74 litres , this compares to about 300 klm for 55 litre in my VZ wagon V6 factory dual fuel in similar situations ,so I pretty happy .My experience with the VZ is it uses about 10% more LPG than petrol, Ive got about 340,000 Klm on my VZ . My Vy on vapour system uses about 15% more LPG than petrol . So I now have a V8 wagon that cost around 9-11c per Klm for fuel ,which I'm pretty happy with .
     
  14. vk2him

    vk2him Member

    Messages:
    117
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Mar 14, 2015
    Location:
    Sydney
    Members Ride:
    VF SSV Redline
    I got my SSV Redline converted last week by Brian at NewGas using the Orbital Liquid system, very happy with performance and all so far.
    One minor problem, the engine cover wasn't fitted as the gas injectors stick up a bit too high for it. Graham downunder, did you need to do anything to get your cover fitted, or is there a LPG engine cover I'd need to buy?
     
  15. vk2him

    vk2him Member

    Messages:
    117
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Mar 14, 2015
    Location:
    Sydney
    Members Ride:
    VF SSV Redline
    if anyone has had their V8 converted to gas, did your engine cover have to be modified to fit, or is there an LPG version of the cover?
     
  16. blackve76

    blackve76 Well-Known Member

    Messages:
    1,603
    Likes Received:
    374
    Trophy Points:
    83
    Joined:
    Feb 9, 2013
    Location:
    there
    Members Ride:
    VE SS ute 360rwkw N/A, 2016 VF2 SS M6
    keep if off keeps manifold cool.
     
  17. vaxx

    vaxx Member

    Messages:
    92
    Likes Received:
    1
    Trophy Points:
    8
    Joined:
    Dec 5, 2006
    Location:
    Queensland
    Members Ride:
    VN Executive S1 Sedan, VR Ute
    Its even better if you build the engine to suit lpg only.

    More compression longer duration cam :boxing:

    Heaps more grunt for the same fuel cost :D
     
  18. Graham downunder

    Graham downunder New Member

    Messages:
    18
    Likes Received:
    1
    Trophy Points:
    3
    Joined:
    Jun 11, 2015
    Location:
    sydney
    Members Ride:
    vf calais
    Sorry I haven't been on for a few days .I just sat mine there , Brian gave me the parts to put it on with cable ties but when I was fitting these I just sat it there and it looked ok . I will see how it goes and what it rubs etc on the weekend and let you know . I'm getting about 300 -320 Klm for 50 litres ,I've done about 3,000 Klm since getting it done and would do it again . one thing you may notice is a bit of water vapour in your exhaust even when the engine is warm ,its normal as the maual says for LPG engines .
     
  19. vk2him

    vk2him Member

    Messages:
    117
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Mar 14, 2015
    Location:
    Sydney
    Members Ride:
    VF SSV Redline
    Thanks Graham - that would be great to get your feedback - do you add the parts to the engine cover or to the rails the cover clips onto? I'm also unsure of the how the engine oil cap would fit too? I might ring Brian to see where I can get those extra parts from if yours works well. Cheers
     
  20. Loaded Dice

    Loaded Dice .... Lets roll.

    Messages:
    687
    Likes Received:
    11
    Trophy Points:
    18
    Joined:
    Dec 4, 2011
    Location:
    Victoria
    Members Ride:
    MY12 SSV Redline
    After conversion my turtle shell fits perfectly on the wall of my man cave ;)
     
    vf2v8 likes this.

Share This Page