Defender Engine Bay Heat - LH guard vent

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Originally Posted by rainman

Sorry flagg, do you mean having the hole in the guard? Serg or redrovertdi might have to answer that. I haven't driven it since I cut it out.

james.

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Yep, having the hole there.

I didnt notice any extra noise, but i always have the drivers window down and the firewall vents open with the radio loud. Mates county has 4 round holes with mesh in the bonnet sides near the windscreen[non opening firewall vents], i didnt go that way in case i ended up with the engine bay hot air coming in under the windscreen. I will probably install some small scoops in the front corner of the guards just beside the headlights[ i already have guard top scopes but one is dedicated to fan/heater pick up so doesnt get near turbo 300tdi]. I wrapped my exhaust and turbo in heat cloth and that also made a difference, i was told not to wrap my 3inch exhaust as it would shorten the life and cause the metal to crystalise and fatigue[i thought that was stainless only but not according to the exhaust place[whom has done lots of custom work for me over the years]]
Richard

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Originally Posted by redrovertdi

[snip]
I wrapped my exhaust and turbo in heat cloth and that also made a difference, i was told not to wrap my 3inch exhaust as it would shorten the life and cause the metal to crystalise and fatigue[i thought that was stainless only but not according to the exhaust place[whom has done lots of custom work for me over the years]]
Richard

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My 3" pipe's been wrapped for five years now and it's been fine.
I went all the way from the dump to the back of the t/case.

Inc tipped me off to mild steel being OK as I was told the same thing as you.
Inc was a fitter on the old Manly Cats and said their mild steel exhausts post turbo were wrapped all the way and it was never an issue

noise didnt change.....then again I have a fist size "vent" in my bulkhead foot well :(

I like Jame's vent size better, that is, he made it go down lower on the pannel for more area.

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Originally Posted by uninformed

noise didnt change.....then again I have a fist size "vent" in my bulkhead foot well :(

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Bahahahahaa! :Rolling:

I’ve been toying with the idea of buying a ‘Southdown’ snorkel for a while now, which would leave the original intake open as a vent. I just can’t bring myself to commit to cutting a hole in the top of the guard. This might be a solution for somebody out there?

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Originally Posted by Nera Donna

I’ve been toying with the idea of buying a ‘Southdown’ snorkel for a while now, which would leave the original intake open as a vent. I just can’t bring myself to commit to cutting a hole in the top of the guard. This might be a solution for somebody out there?

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well here is another solution. kneel on the black plastic cover, drivers side, top of gaurd. When it cracks and breaks, remove it with the intention of replacing it.....then after a month or so, convince yourself its helping vent the engine bay :D

vents cut in side of guard definitly work, left being ideal as it is turbo side.

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Originally Posted by uninformed

well here is another solution. kneel on the black plastic cover, drivers side, top of gaurd. When it cracks and breaks, remove it with the intention of replacing it.....then after a month or so, convince yourself its helping vent the engine bay :D

vents cut in side of guard definitly work, left being ideal as it is turbo side.

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Not on a Puma

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Originally Posted by uninformed

well here is another solution. kneel on the black plastic cover, drivers side, top of gaurd. When it cracks and breaks, remove it with the intention of replacing it.....then after a month or so, convince yourself its helping vent the engine bay :D

vents cut in side of guard definitly work, left being ideal as it is turbo side.

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Remember my wool tuft testing ?
Removing that top of guard cover doesn't work, the flow is really disturbed with most reversing back into the engine bay :(

A NACA duct or louvred cover may work, but a straight open hole doesn't.

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Originally Posted by Nera Donna

Not on a Puma

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Doesn't matter as we're trying to remove hot radiator/I-C air anyway.

I have the guard top vent scoops, heater/fan is dedicated so the driver side rams air into the engine bay but the air cant just flow out, i use a 200tdi left side guard type cover[cut in] and the hot air really does flow out when the thermos are on, as stated earlier i will be putting scoops at the front of the side guards to help move the air, i dont have issues cutting holes in my car as it doesnt have a straight panel on it with 409000ks. My personal opinion is that the body designed back in the late 50s was never designed to conceal a turbo running at 700 odd degrees so a few extra vents can only help reduce engine bay and cabin temps.
Richard