repper
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| posted on 29/5/09 at 07:02 PM |
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what rad for V8 viento
hi all
i made a moc up rad for my V8 viento and tuck it to my local rad maker and showed him it i left it with him to price up an all alloy one
i was not expecting it to be cheep but £500 was even moor than i had expected.
i mentioned that a lot off fello builders had used the polo rad but he said it would be to small and not cool the V8 enough so he sent me a way to ask
your opinions on what size or rad would be best for my car any advice would be great
chears jim
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Paul (Notts)
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| posted on 29/5/09 at 07:07 PM |
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I was unsure what rad to fit to my Viento. As funds were tight I found the biggest rad that would fit at an angle in the nose cone and tried it.
almost two years and no cooling issues.
Rad was from a volvo ( would have to look back at post to find which type )
new it cost - £45 from ebay for the ally type.
Paul
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NeilP
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| posted on 29/5/09 at 07:08 PM |
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Jim,
A decent, new, made to order 4 core rad will cost in the order of £300-£400 so it's a tad high. Your other choice is a rad from a Landrover
Defender 2.5TDI (I think it's the one off the intercooled turbo as that is narrower and therefore will fit). Will cool a V8 beautifully.
Expect to pay £250-£300 for a new one and best of luck if you find a decent used one as they seem to be a bit rare...
HTH, Neil.
Edit: Think one of the guys has got one of a Volvo in.
[Edited on 29/5/2009 by NeilP]
Edit2:  That'd be Paul then!...
[Edited on 29/5/2009 by NeilP]
If you pay peanuts...
Mentale, yar? Yar, mentale!
Drive it like you stole it!
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turbodisplay
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| posted on 29/5/09 at 07:13 PM |
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When i was looking at a fiat coupe 20v turbo i was supprised how small the rad is, yet it is able to cope with a 220hp engine, might be worth a
look.
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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DanP
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| posted on 29/5/09 at 07:14 PM |
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I have a volvo rad (old 840 IIRC) with a big puller fan attached and it keeps mine cool no problem - my fan turns on at 90 and off at 80 and it only
takes a few mins to drop the temp 10 degrees with the fan.
Rad was basically the biggest i could find in the scrappy that i knew would fit in the nose cone. Had to make up my own carrier for it because i
beleive the viento is intended to take a landy TDi rad - and luego wanted a fortune for it.
HTH
Dan
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kenton
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| posted on 29/5/09 at 07:18 PM |
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When i was building my viento i had one from the guys who bought the company from the liquidators. £285. I have a pair of pacet fans for cooling, no
overheating as yet.
kenton
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repper
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| posted on 29/5/09 at 07:20 PM |
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we did discuss a landrover rad as he had one on the floor it was of a 2.5 td the one with the oil cooler builtin to it but as he had left my mocup at
his other depo wear the alloy specialist worked from we wear not able to comper it as in size was looking to spend around the £300 mark but coughed a
bit when £500 was mentioned and then as i got up off the floor he said thats + vat to he did mention he would make it out off coper and brass but
would still be about £350 ish witch is not to bad for a one off will look into the landrover and volvo rads with moor detail cheers all
jim
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mark chandler
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| posted on 29/5/09 at 09:40 PM |
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Landrover/rangerover stuff is much cheaper than they are quoting you.
200TDI dicovery rad splits, you can buy without the intercooler bit.
First google got me this
Any good 4x4 independant will be around £100 for one of these.
Nice stubby thick rads.
Regards Mark
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craig1410
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| posted on 29/5/09 at 10:43 PM |
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Hi,
This is what Westfield use on their V8 SEight -
Linky
They also list a "lightweight" version which looks to be the same layout and looks remarkably like the Polo rad which I am using with my
RV8 Locost.
Linky
As I mentioned, I am using a Polo radiator (the larger of the two sizes) and although I am having cooling issues at present I don't believe this
is due to the radiator, more to do with my header tank which I hope to replace tomorrrow. The radiator has 17 horizontal cores with loads of tighly
packed fins made of aluminium. I honestly believe it will provide plenty of cooling capacity for the RV8 and only cost me £35.
My intention is to try to implement the ducted nosecone like the Westfield SEight to try to keep under bonnet temperature down a bit. It'll be a
challenge to fit it in but I'll give it a try...
Cheers,
Craig.
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James
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| posted on 30/5/09 at 08:39 AM |
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Polo seems to have been good enough for a fair few people with v8s.
With your wide nosecone you could easily fit the MK2 Golf rad which is the same as Polo but about 30-40mm wider.
This is what I've used, not necessary for my Pinto but as future proofing against a decent engine upgrade later.
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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scudderfish
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| posted on 30/5/09 at 08:43 AM |
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My Fury has a radiator from a Bedford van in it.
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craig1410
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| posted on 30/5/09 at 10:06 AM |
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quote:
Originally posted by James
With your wide nosecone you could easily fit the MK2 Golf rad which is the same as Polo but about 30-40mm wider.
Yeah I think that's the same one I used.
Here is a link to my website showing the
radiator along with part numbers and dimensions.
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James
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| posted on 30/5/09 at 10:12 AM |
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If you have a twin core rad such as the Polo or Golf then it's also better to mount the rad at an angle rather than vertical.
PPC magazine suggested 20degrees off vertical.
If it's vertical the rear core is obscured from airflow by the front core.
At an angle air can get to the whole thing.
HTH,
James
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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wilkingj
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| posted on 30/5/09 at 11:30 AM |
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Check out the Land Rover 200 or 300Tdi (Turbo Direct Injected engined) Defender rad. http://www.Paddockspares.com
You want ones after about 1992 ish. The early Tubo Diesel (Non Direct Injection) did not have an intercooler and is wider. Its only the TDi ones not
the TD one.
The Intercooler sits beside the rad, so the rad is fairly narrow.
Check that you are only getting the rad and not the whole assembly which includes the Intercooler - its a BIG price difference!
You will need to make up brackets if its fits.
I would check this one out. Water is IN - Top left, and Out Bottom Right both pointing back down the car and inline ie not at funny angles, Looking
as you are sitting in the drivers seat.
The Luego one has the outlet in the centre at the botom, and inlet is top left.
So you may need to move the outlet.
Paul (Notts), has a Volvo Rad, which looks good and fits well.
I would not reccomend a Polo Rad for a V8. I think its way too small.
You Need a BIG rad, and plenty of cooling.
Most of us need vents in the bonnet as well. Especially if its not a Rover V8.
Rover V8 is 135-300Bhp on average (mostly 200Bhp) unless you go for a 4.6 / 5.2 and tuned 3-350bhp.
A Chevvy 5.7 Litre is 350+ Bhp.
So there is a lot of heat being produced.
Also Block off around the rad in the nose cone to direct all the air thru the rad. This makes a big difference, as the air will take the easiest path
(around the rad) Hence reducing the available cooling.
Finally Check your Fan is turning the right way for the side of the rad that you installed it. Also duct around the fan as this helps it draw the air
thru the rad, and not from between the rad and the fan.
Hope this helps.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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craig1410
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| posted on 30/5/09 at 12:26 PM |
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quote:
Originally posted by wilkingj
I would not reccomend a Polo Rad for a V8. I think its way too small.
Since the larger of the two Polo rad's fills my 4" wider nosecone I'm not sure how it could be any bigger unless you are talking
about thickness. Again the Polo rad I have isn't exactly thin although I appreciate you can get 4 cores or maybe more rather than the twin cores
of the Polo rad.
Apart from the above, I agree with the rest of what you said and would add that wrapping the exhaust headers or manifold with heat shielding tape
should be considered as there is a huge amount of heat emitted from these as well.
I do need to look at blocking off the small gaps I have around the edge of my radiator. It's only an inch or two but as you said, the air will
take the easiest route around rather than through the rad.
Cheers,
Craig.
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repper
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| posted on 3/6/09 at 04:00 PM |
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the viento rad mounts welded on set at 20* angel
the rad i made as a mok up unti was 21" wide by 15" high by 3" deep
i sent westfeld an email asking about the size of alloy rad thay sold as wanted to check the size befor i put in my order for one but thay would not
give me the size off the rad ??
so it looks like a landy is the way to go
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wilkingj
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| posted on 3/6/09 at 09:36 PM |
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Check with Paul about his Volvo Rad, that fitted nicely and didnt need any mods.
ie less work.
Cheers
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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