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Thread: Defender Engine Bay Heat - LH guard vent

  1. #71
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    Thumbs up

    Quote Originally Posted by Tombie View Post
    That’s what I’m eluding to..

    The vent will allow heat to escape = Tick..

    But it won’t have any great effect on creating an “engine bay bubble” when doing water crossings.

    The wading sheet will help, but the Defender engine bay gets soaked on deep crossings regardless of any vent in the guard... Defender Engine Bay Heat - LH guard vent
    2011 Discovery 4 TDV6
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  2. #72
    DiscoMick Guest
    Quote Originally Posted by Tombie View Post
    Because the air doesn’t draw out from there... Defender Engine Bay Heat - LH guard vent
    Yes, I know you've said that before, and I accept it probably doesn't make much difference in normal conditions, since a Defender bonnet is certainly not airtight.
    However, in the OPs example, with water rising in the engine bay during a river crossing, I reckon some air would be forced out the top.
    Personally, I'd rather take advantage of what is already there rather than start cutting new holes.

  3. #73
    Join Date
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    Allestree , its all good.
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    I thought long and hard about the left hand wing vent , weighed up others experience with it done , then made the cut !!.IMG_1097.jpg

    Im not one for making radical changes /mods to the 130 , but this one weighed up .
    The motor is new new , larger intercooler and the pdf fuel pump tweeks .Belting up the Hume mid feb at 105kms hr , the egts dipped below 400 and only rose when going up the glenrowan rise.
    Then we stuck a new a/c condensor up front , rebuilt the trans case and stuck a O/D out back. The return 700 km plus trip was a 30 deg plus day and with the new gearing temps rose to a constant 500 . Hot air really pushes out the new vent ,on a run out to Charlton Anzac day we measured 85 deg at the vent, 520 egt at 105 kms hr. Used a druk unit remote temp sender attached to the inside of vent grill for engine bay air temps.
    Any hot air removed from the engine bay cant be a bad thing .
    '99 Tdi 300 130 Twin Cab
    When I'm here I want to be out there.

  4. #74
    DiscoMick Guest

  5. #75
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    Allestree , its all good.
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    Yes , a tdi 200 vent cover .
    '99 Tdi 300 130 Twin Cab
    When I'm here I want to be out there.

  6. #76
    Join Date
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    Koojan WA (part time Perth)
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    Quote Originally Posted by goingbush View Post
    My V8 Landys were always hotter under the bonnet than my chipped & boosted Td5 is,

    I never get that open the bonnet and a heatwave hit you in the face like opening an oven with any of my turbo diesels like I did with my 4.4 or 5.0 V8 Landys



    Sounds like like it might be worth giving it a go on the old v8 county
    After towing a couple of tonne of hay in the middle of summer she gets a bit warm under the bonnet
    Ill have to have a look where the AC system sits on the passenger side guard

    Any one had a go one (v8 county)?

  7. #77
    Join Date
    Sep 2021
    Location
    Cornwall
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    Update

    Hello all, I'm thinking of doing the same to my Defender TD5 to try and get the engine heat out on very long journeys, how has everyone found it with the vents fitted

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