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Thread: fuel prices

  1. #1
    Join Date
    Oct 2014
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    Northern NSW.Australia
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    1,542

    fuel prices

    Good afternoon.
    With fuel prices rising, i was wondering what you all run in your series daily driver series land rovers ?
    I had been running 98, but Gilbert runs as well on 95. Could O go lower ?
    What other adjustments need doing.
    Thanks.

    whitehillbilly

  2. #2
    Join Date
    Jan 1970
    Location
    Canberra
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    Why would you be running 95 or 98 in a Series 1?

    91 with some valve saver is even higher than needed.

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  3. #3
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    Oct 2014
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    Northern NSW.Australia
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    Thanks.
    Have harden valve seats. Gilbert is my S3.
    what should be done with the timing.

    whitehillbilly

  4. #4
    Join Date
    Jan 1970
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    Quote Originally Posted by whitehillbilly64 View Post
    what should be done with the timing.

    whitehillbilly
    Nothing if your engine is basically standard and not running something like 10:1 compression ratio.

    These engines were designed to run on crap fuel - 98 and 95 are not better fuels than 91, they just have a higher octane rating for higher compression engines - unless modified your engine will run fine on 91 octane.

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  5. #5
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    23,611
    Yes. If your engine is unmodified, it will run withoout issues on anything you can buy today.

    Valve seat recession is not an issue on these engines unless doing mostly freeway driving, and probably not even then.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  6. #6
    Join Date
    Oct 2014
    Location
    Northern NSW.Australia
    Posts
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    Thanks John and Garry.
    Put in 91, only one servo selling it in Murwillumbah. BP.
    I think a little down power, but so much cheaper.
    Running 3 BTDC, seems happy.
    Plug colour better.

    whitehillbilly

  7. #7
    Join Date
    Jan 1970
    Location
    Canberra
    Posts
    15,907
    Quote Originally Posted by whitehillbilly64 View Post
    I think a little down power, but so much cheaper.
    Running 3 BTDC, seems happy.
    Is the placebo effect, your imagination . 98, 95 does not provide more power for a given state of tune - exactly the same - higher octane allows you to go to a higher state of tune, namely compression ratio and advance.

    I would be looking at increasing your advance but tuning experts should advise on this. My Rover V8 runs fine on 91 and I run it at 10BTDC.
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  8. #8
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    23,611
    I would adjust your ignition timing by ear - with the engine warm and idling, adjust by rotating the distributor for best idle. This should be close to the six degree mark, but note that this figure is for static timing, with the engine stopped (but close when idling with vacuum line disconnected).

    If the distributor is working correctly (both centrifugal and vacuum advance) this will be close to the optimum. You can try advancing it from this in small increments until you get pinging on full throttle at low engine speeds and then back off a little.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

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