Page 2 of 2 FirstFirst 12
Results 11 to 17 of 17

Thread: What kind of range should a 3.9v8 be getting on LPG? (mine may have problems)

  1. #11
    Join Date
    Jul 2010
    Location
    Clarkson
    Posts
    51
    Total Downloaded
    0
    my 92 rrc with a mild 3.9 in it gets about 450kms with 85 ltrs of pulp and 350kms of lpg and i have a 80 lr gas tank on board . I only ut the gas in just on a month ago its a omvl r/e90 type with sprint electrics.

  2. #12
    Join Date
    Aug 2007
    Location
    Gosnells
    Posts
    6,058
    Total Downloaded
    0
    Heaking back to when I drove an 89 Classic with 1.5+ tonne behind... it would give around 3.7 km/litre on LPG. Around 4.5 to 5 km/l on petrol

    That was a 3.5 engine, in good nick.

    Have you, or are you inclined to lash out on Snake Oil Spark Plugs ?

    If so, here's a good place to start...

    The world's most powerful spark plug from Enerpulse

    At $11 or so each, not tooo bac when compared to local platinums. I'd allow $US 25 to 40 for shipping.

    James in Gosnells

  3. #13
    Join Date
    Feb 2010
    Location
    maitland
    Posts
    138
    Total Downloaded
    0
    my 94 3.9 had major difference between gas and petrol, had it tuned by gas power in newcastle, some valves removed, plugs changed and a dying lead change now is getting between 230 to 250klms from 52 to 55 lts of gas dont use fuel until gas gone and only to get to servo, (other half thinks no gas needed until it wont go forward any more) the brief runs ive had in it since the tune has showed better to drive and minimal difference between gas and fuel.

  4. #14
    Join Date
    Jan 1970
    Location
    back in the suburbs, near joondalup
    Posts
    3,438
    Total Downloaded
    0
    1994 3.9 RRC
    26L per 100km
    I dont think thats very good at all, but I will be replacing leads, plugs etc soon. Once I have swapped them out I will try the advanced timing thing, might take it for a tune up somewhere if that doesnt help.
    Anyone recommend a TOP notch LPG place near (WA) Belmont, welshpool, joondalup, had my fill of cowboy mechanics.

  5. #15
    Join Date
    Jun 2007
    Posts
    4
    Total Downloaded
    0
    Took a run in my 1995 Discovery auto V8i with decade old Impco conversion, from Canberra to Temora last weekend and managed to get 19.1L/100km (46.5l 243km) travelling around 90kmh on the way out, and 19.6/100km (53.8l 274km) at speed limit on the way back. I had just replaced the faulty vacuum advance and the MAF (no name from ebay - the original one was missing the wire gauze) for good measure and set timing to 8 btdc. New motor (4.0 with original 14CUX etc) fitted 12 months ago along with NGK BPR6IEX, Magnacore leads, UniFilter rampod.

  6. #16
    Join Date
    Jan 1970
    Location
    back in the suburbs, near joondalup
    Posts
    3,438
    Total Downloaded
    0
    [quote=chrisandebreg;1456734]
    "some valves removed"
    230 to 250klms from 52 to 55 lts QUOTE]

    Which valves where removed from where?
    Seems my L/100 is pretty close to yours now


    Quote Originally Posted by HangOver View Post
    1994 3.9 RRC
    26L per 100km
    I dont think thats very good at all, but I will be replacing leads, plugs etc soon. Once I have swapped them out I will try the advanced timing thing, might take it for a tune up somewhere if that doesnt help.
    Anyone recommend a TOP notch LPG place near (WA) Belmont, welshpool, joondalup, had my fill of cowboy mechanics.
    So in the past few weeks I have changed:
    vacumn advance
    swapped plugs for iridium (-1 temp, erm gap of 6? or there about)
    Magnecore leads
    New Distributor cap + rotor arm/button
    new coil (Bosch GT range)
    new condensor/capacitor
    blanked of the valve saver
    *Have yet to check the timing is 10 Degrees BTDC, (Next job)

    After that I'm now getting an average of 23.2 L per 100km over a distance of 1700Kms. But 400km of that was towing a caravan.

  7. #17
    Join Date
    Jan 1970
    Location
    back in the suburbs, near joondalup
    Posts
    3,438
    Total Downloaded
    0
    update on an old thread, after a longer period I 'm averaging 22L per 100ks
    I cruise at 110 when I can and have a bit of a heavy right foot, so 22L I'm pretty happy.

Page 2 of 2 FirstFirst 12

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!