Will a bonnet scoop reduce heat in the engine bay?

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Originally Posted by Eevo

im so confused. front facing, rear facing, side pannel vents... why cant there be a simple answer

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You must be new here. [bigrolf]

G'Day Gang,
I have had some overheating issues on my 98 Defender and 97 Disco. I was thinking of adding a extra a/c condensor behind the real a/c condensor but plumbing it into the heater circuit. If I was living in a area where the heater would be required change over taps could be added. I guess if the cabin heater was required over heating would not be an issue.
I haven't actually done it yet but intend to.
Cheers
Dennis

Worked perfectly...

Massive reduction in under Bonnet temperature.

No issue with water crossings or rain...

https://www.aulro.com/afvb/images/im...018/01/428.jpg

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Originally Posted by quinny139780

https://www.aulro.com/afvb/images/im...018/01/426.jpghttps://www.aulro.com/afvb/images/im...018/01/427.jpg

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Looks good

i have a solution. i'll just drive with the bonnet off.

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Originally Posted by Eevo

i have a solution. i'll just drive with the bonnet off.

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I've done that on Patrol!

Proved the theory. :)

It is illegal though.....

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Originally Posted by rick130

Proved the theory. :)

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what was the theory?

Air wasn't escaping the under bonnet space fast enough.

Some cars need that fan at the front to push the air from the high pressure region under the bonnet as it can't escape up the trans tunnel and underneath fast enough, even with ram air at the front pushing at highway speeds.

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Originally Posted by blackrangie

Have to be carefull with increasing flow, sometimes you increase flow too much and you dont get the cooling effect from the rad, also with electrics just another thing to go wrong, not saying it cant help, just things to keep in mind.

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It only increases flow when needed, not all the time. As for another thing to go wrong, not really as you are replacing another thing that can go wrong, that is the mechanical pump.

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Originally Posted by Preston

It only increases flow when needed, not all the time. As for another thing to go wrong, not really as you are replacing another thing that can go wrong, that is the mechanical pump.

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Yes, however my comment was that sometimes increasing flow doesnt help cooling, it can actually have the opposite effect.
Would you say an electric pump with variable speed controller has the same reliability as the stock mechanical pump?