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Thread: Which Fuel for the D2 bent 8?

  1. 2nd November 2006, 02:11 PM #11
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    grumpybastard
    grumpybastard is offline Master
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    Octane rating is all about how much the fuel can be compressed until it goes bang and causes pinging / knocking.... other factors like head design play a large part of it.

    So generally the higher the compression rating the higher octane fuel is required.

    My old 97 Statesman runs 8.4:1 so std unleaded is all thats needed
    My 94 Calibra runs 10.8:1 so is very grumpy with anything but premium

    The D2 runs 9.34:1 so is reasonably high (hence the question)

    Normally the knock sensor will retard the timing to assist "pinging" but this of course leads to a decrease in power and an increase in fuel consumption
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  2. 2nd November 2006, 02:30 PM #12
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    Bytemrk
    Bytemrk is offline ForumSage Silver Subscriber
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    Quote Originally Posted by Feral
    This was to be expected. It means that you enjoyed the slightly extra horses that the premium gave you

    Cheeers.
    Lyndon.
    nope

    Absolutely nothing noticable in performance or fuel economy.... just a few more dollars for each tank full...

    You can keep your premium on a Disco II


    I've had significant performance differences with other cars... but none on the Disco

    Mark
    Mark

    Of all the things I've lost, I miss my mind the most

    2015 TDV6 D4.... the latest project... Llams, Traxide, Icom 455, Tuffant Kimberleys and Mofos.... so far.
    2012 SDV6 SE D4 with some stuff... gone...
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  3. 2nd November 2006, 03:44 PM #13
    PhilipA
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    Everyone is right!!!!
    The D2 initially had 8.13:1 or thereabouts, so could run on unleaded.
    Even the first Thors I think were 8+:1.
    however in 2001 or 2002 the spec changed to 9.35 or thereabouts. these require at least 95 octane.
    Look on the engine number plate on the LH of the engine between 2and 3 . If 9.35 then you must use 95 or better.
    regards Philip A
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  4. 2nd November 2006, 04:41 PM #14
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    ladas
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    Just to clarify the ratio (ie 9.35:1) is stamped just above the engine number.

    Ladas
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  5. 2nd November 2006, 05:40 PM #15
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    Pedro_The_Swift
    Pedro_The_Swift is offline The MOD Father
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    damn,,,
    8.23.




    major bummer.
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!

    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

    [IMG][/IMG]
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  6. 2nd November 2006, 06:29 PM #16
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    grumpybastard
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    Everyone is right!!!!
    The D2 initially had 8.13:1 or thereabouts, so could run on unleaded.
    Even the first Thors I think were 8+:1.
    however in 2001 or 2002 the spec changed to 9.35 or thereabouts. these require at least 95 octane.
    Look on the engine number plate on the LH of the engine between 2and 3 . If 9.35 then you must use 95 or better.
    regards Philip A
    Philip knows his stuff!




    Standard for me too
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  7. 2nd November 2006, 06:52 PM #17
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    Pedro_The_Swift
    Pedro_The_Swift is offline The MOD Father
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    Hey Matt!!
    BUB002 is 29 engines after yours!!!

    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!

    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

    [IMG][/IMG]
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  8. 2nd November 2006, 06:58 PM #18
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    ladas
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    Looks like I have to go on paying for premium.
    Last edited by ladas; 11th January 2007 at 04:36 PM.
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  9. 3rd November 2006, 08:49 AM #19
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    grumpybastard
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    Hey Matt!!
    BUB002 is 29 engines after yours!!!
    HAHAHA!

    In the engine family scheme of things...that means my LR is your long lost older sister
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