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Thread: V8 Coolant Hose temp ? Engine Smell?

  1. #1
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    V8 Coolant Hose temp ? Engine Smell?

    I know the top hoses run hot on the Thor V8 and run at high pressure.

    However, the bottom hose on my engine into the Thermostat from the rad seems 'warm' but not hot like the top hoses after a long run. It's must be opening and closing OK, as I have never overheated and the temp is solid at midway.

    Does the Thermostat on these engines open and close at a high temp?. Do they open fully or partially? My front fan rarely runs and when it does the engine often smells of hot coolant and oil when standing after a good drive. I have zero leaks. I guess this odor is normal for the big V8 compared to my X-Trail which never smells hot..?

    Tempted to change the Thermostat and Water Pump as it's 11 years old. Or is it case of if it's not broke, dont fix it?

  2. #2
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    The D2 V8 runs at a terrifying 96,,
    so yes it runs hot!
    they only run way up there for emission purposes.
    I would love to stick an 88deg out of a Classic and see what happens,,
    "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]

  3. #3
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    Quote Originally Posted by Pedro_The_Swift View Post
    The D2 V8 runs at a terrifying 96,,
    so yes it runs hot!
    they only run way up there for emission purposes.
    I would love to stick an 88deg out of a Classic and see what happens,,
    Thanks Pedro, I thought this would be the case. My dad who's a mechanic says stop worrying it supposed to be hot!. I guess i'm not used to the V8!

    I though the same with the Thermostat! I could imagine how rich it would run? And most likely throw the ECU into confusion? I guess this high temp and pressure is why they can be leaky!

    Rob

  4. #4
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    Exactamundo!
    but temp vigilance is required!

    but I think the jury's still out on the ECU needing that high a temp---
    "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]

  5. #5
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    Quote Originally Posted by Pedro_The_Swift View Post
    Exactamundo!
    but temp vigilance is required!

    but I think the jury's still out on the ECU needing that high a temp---
    What Kind if vigilance? As per the manual checking the coolant level weekly? Mine has used only about 5mm in 6 months or 4k of driving, about the same as my x-trail. Any more idea's for ensuring it runs well?

    rob

  6. #6
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    If the temp gauge moves upwards at all be VERY concerned!

    there are several temp monitoring solutions, both low water and over-temp, one good one a long term site sponsor,,

    There is not a lot you can do to make a D2 V8 run better(other than physically taking bits off).
    Check for coolant stains at the rear (hell, everywhere!) of the engine, the orange colour stands out like the proverbials,, check your viscous fan is operating correctly, The MAF will slowly fail but is easily checked/replaced, not so leads and coil packs but they last considerably longer.

    But in the end heat will kill these before old age does.
    "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]

  7. #7
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    Quote Originally Posted by Pedro_The_Swift View Post
    If the temp gauge moves upwards at all be VERY concerned!

    there are several temp monitoring solutions, both low water and over-temp, one good one a long term site sponsor,,

    There is not a lot you can do to make a D2 V8 run better(other than physically taking bits off).
    Check for coolant stains at the rear (hell, everywhere!) of the engine, the orange colour stands out like the proverbials,, check your viscous fan is operating correctly, The MAF will slowly fail but is easily checked/replaced, not so leads and coil packs but they last considerably longer.

    But in the end heat will kill these before old age does.
    Thanks for this. I assume the MAF is the Air Mass Meter ? From the air filter? If so this has just been replaced. Viscous Fan? is this the one which kicks in at the front of the rad? The one behind driven by the Serpentine belt seems to constantly run.

  8. #8
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    Has anyone fitted a lower temp Thermostat to a Thor V8?.. If so is all OK? Same , Better ? Worst etc?

  9. #9
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    I'm actually ordering a PEL500110 stat now from the UK. From what I have read it lowers the overall temps a few degrees and remains at a steady temp rather than fluctuating.

    See here.

    FYI I have 56D engine.

    M
    Last edited by diesel; 10th August 2012 at 12:22 PM. Reason: Info

  10. #10
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    excellent link M
    "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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