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Thread: 4bd1/4bd1T and fuel consumption

  1. 25th November 2009, 10:59 PM #1
    Sprint
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    4bd1/4bd1T and fuel consumption

    what are the isuzu's like on fuel, especially when towing?
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  2. 25th November 2009, 11:16 PM #2
    clean32
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    Quote Originally Posted by Sprint View Post
    what are the isuzu's like on fuel, especially when towing?
    toped up today
    105 ltrs = 934 klm around town with a bit of kit on and 31"
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  3. 25th November 2009, 11:21 PM #3
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    isuzurover
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    I average 11-11.5 L/100km in mine - that is with turbo, 33's, and driving it fairly hard.

    I don't do a lot of towing, but Dave S and I drone an NA 4BD1 through the US, and at one stage we had 100km/hr headwinds and couldn't pull 4th, let alone 5th. So we did a few hundred km at 90km/h in 3rd (basically at the governor). Fuel consumtion was 16.5 L/100km for that stretch. I have never seen above 15 in mine no matter how hard I drive.
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  4. 25th November 2009, 11:48 PM #4
    Sprint
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    also, as a comparison, are the turbo's any better/worse?
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  5. 26th November 2009, 12:35 AM #5
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    Quote Originally Posted by Sprint View Post
    also, as a comparison, are the turbo's any better/worse?
    After fitting a turbo, fuel consumption has become marginally worse (say 0.5 L/100) - however that is because I sit on whatever speed I want, rather than as fast as I can go with the given headwind. Whatever the conditions, I can sit at 120km/h on the highway. The only difference is the EGTs are anywhere between 450 and 750 depending on the headwind. With an intercooler I hope the EGTs will be lower.
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  6. 26th November 2009, 06:34 AM #6
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    10.5 to 11.5 l/100 unladen town and highway, up to 15l/100 towing at 100kmh with CT and full load of fuel and touring kit on board.
    550,000km on injectors and pump, turboed and intercooled.

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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  7. 26th November 2009, 10:00 AM #7
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    Generally around 10.5l / 100Km - non turbo (N/A) 4BD1 - not towing, mixture of town & hwy.

    Jon
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  8. 26th November 2009, 10:11 AM #8
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    from 10.5 empty thru to 15 heavily laden with heavy trailer and roofrack
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  9. 26th November 2009, 12:49 PM #9
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    Quote Originally Posted by isuzurover View Post
    I average 11-11.5 L/100km in mine - that is with turbo, 33's, and driving it fairly hard.

    I don't do a lot of towing, but Dave S and I drone an NA 4BD1 through the US, and at one stage we had 100km/hr headwinds and couldn't pull 4th, let alone 5th. So we did a few hundred km at 90km/h in 3rd (basically at the governor). Fuel consumtion was 16.5 L/100km for that stretch. I have never seen above 15 in mine no matter how hard I drive.
    Very accurate description.
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  10. 26th November 2009, 01:18 PM #10
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    yep 10-11 for me always.. but I don't drive it hard. Non-turbo.

    Logically a turbo would have to use more as there is more air to mix it with..
    Hercules: 1986 110 Isuzu 3.9 (4BD1-T)
    Brutus: 1969 109 ExMil 2a FFT (loved and lost)
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