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

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

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]

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

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

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

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

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

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.

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.

My Fury has a radiator from a Bedford van in it.

quote:

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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.

---

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

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.

quote:

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Originally posted by wilkingj
I would not reccomend a Polo Rad for a V8. I think its way too small.

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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

Check with Paul about his Volvo Rad, that fitted nicely and didnt need any mods.

ie less work.
Cheers