Defender Engine Bay Heat - LH guard vent

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Originally Posted by Tombie

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... [emoji41]

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:thumbsup::thumbsup::thumbsup:

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Originally Posted by Tombie

Because the air doesn’t draw out from there... [emoji41]

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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.

I thought long and hard about the left hand wing vent , weighed up others experience with it done , then made the cut !!.Attachment 140202

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 .:BigThumb:

Like these?

Defender guard air vents - Google Search

Yes , a tdi 200 vent cover .

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Originally Posted by goingbush

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

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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)?

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