Birty Dastards Jeep Club
Tech Forum => Workshop => Topic started by: Bulldog67 on April 13, 2012, 06:37:18 PM
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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 :003: ).
So any recommendations of the vents themselves - ideally sensibly priced?
And is there any obvious place they should go?
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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
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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 :icon_twisted:
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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)
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gen right do some nice ones, as are the nissan pulsar ones I got offof ebay :003:
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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.
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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 :003: ).
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
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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 (http://www.bearmach.com). part number BA5900.
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i made a bonnet bulge to let warm air out
(https://birtydastards.com/frm/proxy.php?request=http%3A%2F%2Fi166.photobucket.com%2Falbums%2Fu106%2Fdt00th%2Fjeep320121.jpg&hash=c73e3f5825a90d006f48e25a258e6f20c97b60a7)
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Two pairs of these would look good :icon_super:
[attachment=1]
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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
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gen right do some nice ones, as are the nissan pulsar ones I got offof ebay :003:
:icon_eek: :icon_eek:
I would have to go upmarket and ford RS instead :003:
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but price could be a prob there, I think the 5 louvre .... :sign0023:
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 (http://www.marinemegastore.com/find.asp?cid=MVNQYYQJ1UH168LI0YMMVMLHVLGCQHB2)
Linky comes up with search form : enter : stainless louvre vent
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Im on the ball: http://www.mailspeedmarine.com/boat-vents-ventilation/ec-smith/reinforced-ss-louvered-vents-five-1012077.bhtml (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 :003:
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I may just be a cheapskate :003:
Yep !!
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says the scrapyard challenge pimp his CJ builder :098:
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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.... :icon_super:
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like this?
[attachment=1]
gotta say I don't like em :icon_sad:
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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?
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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 :icon_super:
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these ?
(https://birtydastards.com/frm/proxy.php?request=http%3A%2F%2Fwww.body-kit.co.uk%2Fshopimages%2Fproducts%2Flarge%2FAC9.jpg&hash=ae5ffbd8076a96a1d94caff04bad668a1394c9d9)
http://www.body-kit.co.uk/product.php/1072/2290/air-intakes-2x-270x195-sierra-cosworth-cut-in-abs (http://www.body-kit.co.uk/product.php/1072/2290/air-intakes-2x-270x195-sierra-cosworth-cut-in-abs)
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[attachment=1] :icon_super:
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yeah im thinkin some bullet holes may be the only answer
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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 :003:
edit : let me clarify, I'll bring the shotgun as well :hysterical:
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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
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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 :003:
edit : let me clarify, I'll bring the shotgun as well :hysterical:
Pants to that, give him ya cartridges, a nail and a hammer, and perhaps some safety specs, I'll bring the popcorn :peekaboo:
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Shoot it :070:
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if anyone is shootin it aint gonna be me, I will just shoot myself :003:
does ya bullet holes go staright thru will or have a grill of some sort behind them?
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bullet hole version ain't mine...
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doh :eusa_doh:
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bullet hole version ain't mine...
with the triple by-pass king air shox, full width led lightbar, twigglepin front winch, quarter led's, king air bumps etc...........feckin nice TJ and equally nice sized wallet :003:
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I wouldn't use mesh, pain to keep clean/clear and you would need more or bigger holes to get the same air flow
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use instead ..........?
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nothing, you want a fukin hole, why fill it with crap?
the whole point of "bullet" holes is they are small enough to leave open, they get the air volume by having lots of em as aposed to one big ass vent
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coz otherwise crap will throw itself in there anyway
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http://www.dmark.co.uk/what-we-do/panelling/ (http://www.dmark.co.uk/what-we-do/panelling/) click on louvres
http://www.cbsonline.co.uk/search,b.html?q=louvre (http://www.cbsonline.co.uk/search,b.html?q=louvre) in kent
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it will anyway m8, look under the jeep where the engine is, theres one fukin great hole between the chassis legs and its closer to the crap, a few holes in the hood won't make that much difference
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At 85 Mph on the motorway.....doubt it
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http://www.dmark.co.uk/what-we-do/panelling/ (http://www.dmark.co.uk/what-we-do/panelling/) click on louvres
http://www.cbsonline.co.uk/search,b.html?q=louvre (http://www.cbsonline.co.uk/search,b.html?q=louvre) in kent
first page bentley and ferrari :icon_eek: i shall travel inwards no further :003:
and good point both Dutch and NB
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when was the last time you heard heat sinking?
I see I have been demoted :jpshakehead:
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i have a pick
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when was the last time you heard heat sinking?
I see I have been demoted :jpshakehead:
not the heat sinking - its the muddy liquid he was referrin to coming up so worryin bout a few holes is reundant
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i have a pick
NO!
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but if we take the bonnet off and do it from underneath the oles will be all jagged and sticking out all mad maxy
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My vote goes for Roeland to shoot it :003:
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My bullet holes are 1 and 1/4 inch and I think there's 5 along each side...
I did it when I cut 4" off the hood and hi lined the fenders by the same amount.... Cos I could
They make bugger all difference :hysterical: I just kinda like em :massage: :icon_twisted:
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http://www.sdslondon.co.uk/louvre-vents.html (http://www.sdslondon.co.uk/louvre-vents.html)
or just buy a bunch of starrets
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They make bugger all difference :hysterical: I just kinda like em :massage: :icon_twisted:
there must be a tiddly bit of difference
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Tiddly is prob right.... :icon_biggrin:
You can feel heat coming out at rest but at speed no difference ..... But I think this has been said already..... Lots of louvres and holes will help at crawl but at speed it is all down to the rad at the front the general cooling systems health
And capacity of rad.
The aux fan only helped to maintain temp when it got to thinking about running hot.then the aux fan would maintain temp at the max I felt comfortable with but not reduce it.... Until I dropped below 50 ......
It was all down to the winch on the front and 35s
And if I'm honest a rad that had a few holes and chunks out of the cooling fins :icon_twisted: didn't help???
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its got a new rad on it, but since all the work its been flushed thru as well, and of course it was runnin bad anyway previously, so guess I need a decent run to test it out, altho it was only crawlin at 40mph in heavy traffic and in 80f heat that it caused me to pull over
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Should be able to cope with that 40mph stuff
have you got the correct rad cap..... Tis marked in psi YJ TJ ZJ is 15or16 psi and this raises the boiling point of water coolant mix if it leaks pressure and therefore fluid it will get hot.... Had this on the ZJ new cap cured it.
otherwise it's the ford Taurus 2 speed fan trick that the US boys use.... DoubleJ had one cool anything and suck some stoopid amount of CFM like 3,500 :icon_super:
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will check cap, hadnt thort of that
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is a flush worth doing even if it has a new rad?
still v close to overheating on the short run to dymchurch on friday :011:
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Leecy fan?
if mech fan has it got a shroud..... If not wont work as well or at all
Correct pressure rad cap?
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rad cap check today, seems it should be 16psi
water wetter could be an option
pretty sure it has a shroud, will get the guy that has it to check
may well have to go leccy fan but im bored of shovellin money at this one now :die:
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What you need is a nice efficient diesel that doesnt generate as much heat :003:
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If you go Leecy fan to augment the mechanical.
You might fall foul of the following!
I did this to the YJ cos of a honkin great 8274 blocking the rad at motorway speeds and holding me to 50mph
So fitted the largest Leecy that would fit across rad in front that worked as a pusher
at overheat speeds on motorway/ A1 etc turn fan on and it will hold engine at a temp where it is safe to now do 60mph
But won't cool any further......
at all Offroad situations normal engine driven fan is more than adequate no Leecy needed and since 1Ton status have never hit the switch
Seems that Leecy fans work best behind rad as Pullers and only if fully shrouded. as said big Yankee SPAL type fan or Ford Taurus 2 speed that pull ridiculous CFM are the ones favoured by the US boys so will work for us :icon_super:
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Have you had the engine tuned up yet? If the timing is off or anything out of adjustment it maybe running hot. It sounds funny but also check you have the correct fan, vee and serpentine belts turn the fans in opposite directions. It has happened during swaps that that the wrong fan gets installed and blows air forward.
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Delk is right..I've come across a fan turning the wrong way twice before [blowing instead of sucking!] Also bad timing can cause overheating too.
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and running lean will cause it to run hot (too much air, not enough petrol) seen this hot enough to melt pistons on a bike
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hot enough to melt pistons on a bike
Yes it can, on my GS550 many many moons ago :icon_rolleyes:
BD,
Lean burning can cause your poor performance too ...
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cheers gents, will leave the fan mods etc until the after the tuners then
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Have some hood vents coming for the ML, will keep you posted on this!!!
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Cheers :greggmo:
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:icon_redface: I still have a childish boner to do this tho :003:
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