Topic: Hood vents (Read 11534 times)

Bulldog67 · « **on:** April 13, 2012, 06:37:18 PM »

Hopefully the Chief will run a lot better now all the bits are on and been renewed etc, but on a long run on a sunny day sittin in traffic it used to get too hot (ie pullover and rest hot) so thinkin of bein pre-emptive and gettin some hood vents (yes Bubba, they probably are ghay

).

So any recommendations of the vents themselves - ideally sensibly priced?

And is there any obvious place they should go?

Nosebolt · « **Reply #1 on:** April 13, 2012, 06:43:02 PM »

ok vents work best when moving, less effective when in traffic.

the most common mistake is to fit them like scoops, they work by letting air OUT not in so fit them between the back of the fan and air filter, past the air filter the airflow is disrupted and may cause a low pressure area reducing air into the carb.

personally I would go for a more effective rad or try water wetter before cutting into the hood

wildwood · « **Reply #2 on:** April 13, 2012, 06:49:53 PM »

Over the manifold!

over the inlet ie carb to get cool ain't to induction to help running
And as much air to and or around exhaust manifolds....

Apart from vent in hood....
Also try exhaust wrap around manifold and or headers this will move heat away from engine bay.
cut some of inner arch/fender away to allow mor heat out.
And I have seen this on Pirate..... A small fan on either side at rear of fender inner to suck air out.
Or aux electric fan as a pusher on the rad....... I had to do that with the YJ when in road use as the 8274 obscured tooooo much rad for normal use at over 60...

Warthog/ mark will tell you of the Lardy trick of a fan on underside of hood above exhaust manifold blowing thro hood vents but then you with a V8 will need two.

Bit of a ramble of an answer but there you go..... Tis now Merlot time

Dave69 · « **Reply #3 on:** April 13, 2012, 06:55:55 PM »

water wetter does work to a degree but it is aimed for use in hot climates not as an every day use to reduce temperature. fit bigger rad or bonnet vents. as for placing that will raise another argument/discussion.

front of the bonnet for normal cruising as this draws the heat taken from the rad out, for offroading and slow driving then place them towards the back of the bonnet to draw the heat away from the rear of the engine, on a v8 these would be place over the rear part of the exhaust headers (bit obvious)

willo · « **Reply #4 on:** April 13, 2012, 07:02:16 PM »

gen right do some nice ones, as are the nissan pulsar ones I got offof ebay

Cockney Boy · « **Reply #5 on:** April 13, 2012, 07:18:56 PM »

I'm planning on fitting a Bonnet Fan, but I wouldnt want to see that on the Chief, go for a better Radiator. Chances are yours isn't cooling as good as it should. Remember your waggon was made for hot climates.

Bubba · « **Reply #6 on:** April 13, 2012, 07:31:59 PM »

Quote from: Bulldog67 on April 13, 2012, 06:37:18 PM

Hopefully the Chief will run a lot better now all the bits are on and been renewed etc, but on a long run on a sunny day sittin in traffic it used to get too hot (ie pullover and rest hot) so thinkin of bein pre-emptive and gettin some hood vents (yes Bubba, they probably are ghay ).

So any recommendations of the vents themselves - ideally sensibly priced?

And is there any obvious place they should go?

yeah they should no be fitted to the tailgate thats the blunt end for best efect fit them to the sharp end

tedthefed · « **Reply #7 on:** April 13, 2012, 07:47:43 PM »

I put 2 bonnet vents on the XJ near the back facing the windscreed (see the heat coming out) The vents are for the Defender, got them from a place in Derby but are listed at www.bearmach.com. part number BA5900.

dtooth · « **Reply #8 on:** April 13, 2012, 08:03:59 PM »

i made a bonnet bulge to let warm air out

Dutch · « **Reply #9 on:** April 13, 2012, 09:54:25 PM »

Two pairs of these would look good

[attachment=1]

Bulldog67 · « **Reply #10 on:** April 13, 2012, 09:56:55 PM »

They were on my radar, thinkin some anti-colour could sort out the shine, but price could be a prob there, I think the 5 louvre would be needed coz the size of the Chief

Bulldog67 · « **Reply #11 on:** April 13, 2012, 09:58:13 PM »

Quote from: Willo on April 13, 2012, 07:02:16 PM

gen right do some nice ones, as are the nissan pulsar ones I got offof ebay

I would have to go upmarket and ford RS instead

Dutch · « **Reply #12 on:** April 13, 2012, 10:03:21 PM »

Quote from: Bulldog67 on April 13, 2012, 09:56:55 PM

but price could be a prob there, I think the 5 louvre ....

From some other petrol head :

Engine Bay heat reduction - John Peach.
Engine Cooling : Many hoods are now fitting extra louvres to the bonnet sides, to aid the removal of the hot air from the engine compartment.

I have purchased these vents, pictured, from my local marine stockist ( visit any boat yard to find one ). They are stainless , with 5 louvres, and cost £10.90 each. Ask for part number 4181 from the ECSmith catalogue. They are not always on the shelf, but delivery of mine took just 3 days.[/i]

Or buy on-line at the Marine Megastore :

http://www.marinemegastore.com/find.asp?cid=MVNQYYQJ1UH168LI0YMMVMLHVLGCQHB2

Linky comes up with search form : enter : stainless louvre vent

Bulldog67 · « **Reply #13 on:** April 13, 2012, 10:07:23 PM »

Im on the ball: http://www.mailspeedmarine.com/boat-vents-ventilation/ec-smith/reinforced-ss-louvered-vents-five-1012077.bhtml

but £60 for some vents seems extreme to me, but I may just be a cheapskate

Dutch · « **Reply #14 on:** April 13, 2012, 10:10:29 PM »

Quote from: Bulldog67 on April 13, 2012, 10:07:23 PM

I may just be a cheapskate

Yep !!

Bulldog67 · « **Reply #15 on:** April 13, 2012, 10:15:34 PM »

says the scrapyard challenge pimp his CJ builder

wildwood · « **Reply #16 on:** April 14, 2012, 12:29:43 AM »

Arha these would be the ones I spotted on A Lt weight Lardy on my welding course and posted up pics of!!!!

they do look good .......

can't find the pics or the thread but some time in Sept... Last....

Nosebolt · « **Reply #17 on:** April 14, 2012, 12:35:38 AM »

like this?

[attachment=1]

gotta say I don't like em

Bulldog67 · « **Reply #18 on:** April 14, 2012, 09:10:45 AM »

hmmm, gotta say I dont much like the look of that either

suppose anti colour vents on an anti colour bonnet may not be as eurrrgh

what about bullet holes down the side ala Wildwood?

wildwood · « **Reply #19 on:** April 14, 2012, 11:18:29 AM »

They look better on the side of the hood at the rear just above fender sides.
But they the ones

Just need to powder coat black eh BD

Dave69 · « **Reply #20 on:** April 14, 2012, 12:53:14 PM »

these ?

http://www.body-kit.co.uk/product.php/1072/2290/air-intakes-2x-270x195-sierra-cosworth-cut-in-abs

willo · « **Reply #21 on:** April 14, 2012, 08:50:18 PM »

[attachment=1]

Bulldog67 · « **Reply #22 on:** April 14, 2012, 08:55:51 PM »

yeah im thinkin some bullet holes may be the only answer

Dutch · « **Reply #23 on:** April 14, 2012, 08:58:06 PM »

Quote from: Bulldog67 on April 14, 2012, 09:10:45 AM

what about bullet holes down the side ala Wildwood?

I've got some prohibited Cal 12 No 3 (geese shot) cartridges lying around.

FOC for you buddy

edit : let me clarify, I'll bring the shotgun as well

willo · « **Reply #24 on:** April 14, 2012, 09:00:14 PM »

Quote from: Bulldog67 on April 14, 2012, 08:55:51 PM

yeah im thinkin some bullet holes may be the only answer

there is a bunch in the uk, who you can send ya bonnet to and they will press louvres in anyhow any style you want. not too dear either

Author Topic: Hood vents (Read 11534 times)

Nosebolt

Cockney Boy

dtooth

Nosebolt