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Hufflepuff



Member Since: 25 Oct 2014
Location: Hampshire
Posts: 337

England 2005 Defender 90 Td5 XS CSW Tonga Green
Radiator with oil cooler built in - good idea or not?

I need to obtain a radiator for my Rover v8 project, and see that Allisport do one with an oil cooler built in:

https://www.allisport.com/shop/performance...hermostat/

Assuming this is intended to be used with a engine oil, and not for automatic transmission cooling, would you think this was a good idea for the Rover v8, or not?

I would like to maximise my cooling potential, both offroad and when cruising along at motorway speeds. It looks like you can get a sandwich plate which sits between the oil filter housing and engine, where you can get a feed off to go to an oil cooler.

My concerns are:
(a) Will the oil filter still fit? From memory when I took the original 3.5 out, the filter looked quite close to the front chassis.
(b) Is it just another point of failure waiting to happen, eg. another leak point or more catastrophic failure point?

The engine which is going in is a 4.8 litre fuel injected unit from ACR, so has the potential to generate quite a lot more heat than the original 3.5.

Cheers!
Chris. 2005 Td5 90 XS
1989 V8 110 CSW

Post #809012 6th Jan 2020 1:52pm
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rallysteve



Member Since: 10 Feb 2014
Location: South Yorks
Posts: 1282

United Kingdom 1984 Defender 90 V8 Petrol PU Caledonian Blue

I just used an original radiator from a Land Rover 2.5TD which has the cooler built in. i think they are quite a neat installation as you get some of the benefits of an oil-to-water and an oil-to-air cooler without any packaging issues.

You will want to make sure you have a thermostat on the oil cooler supply pipes from the pump. My serpentine engine had one from new as the discovery also used a cooler built into the radiator.

Steve 02' 110 TD5 Double Cab
84' 90 3.9 V8 Caged Pickup Build Thread

Post #809013 6th Jan 2020 2:00pm
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Hufflepuff



Member Since: 25 Oct 2014
Location: Hampshire
Posts: 337

England 2005 Defender 90 Td5 XS CSW Tonga Green

Thanks for the reply Steve. I will go ahead and order the one with the oil cooler then - I didn't know that the Discoverys had them from factory, cheers! 2005 Td5 90 XS
1989 V8 110 CSW

Post #809137 7th Jan 2020 8:46am
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Widget



Member Since: 04 Feb 2010
Location: Hungerford
Posts: 317

United Kingdom 1988 Defender 90 V8 Petrol ST Tamar Blue

+1 - my V8 is D1 Serp and has a DTurbo rad with oil cooler. JB@Lodelaner 1988 Ninety 3.9 V8

1951 Series 1 80" | 1972 Series III 2.25d | 1974 Range Rover 2dr V8 | 1988 Ninety CSW V8 (factory) | 1998 Defender 50th Anniversary V8 | 1996 Discovery 1 3.9 V8 | 2004 Defender 110 Td5 XS | 2006 Discovery 3 | 2008 Freelander 2

Post #809210 7th Jan 2020 3:33pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 5554

2011 Defender 110 Puma 2.4 USW Stornoway Grey

yes def worth doing. those Allisport V8 rads really do shift some heat, my advice is get one with the twin fans and shrouded. Cheers

James
110 XS Utility
90 tdci Softtop
90 tdci Hardtop

Post #809269 7th Jan 2020 8:32pm
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V8GPC



Member Since: 18 Jul 2016
Location: Manchester
Posts: 255

United Kingdom 

The Defender 50th cools the oil in the radiator.

"The V8i engine uses a pressurised cooling system and cross flow radiator which is supplied from a separate expansion tank. The coolant radiator also incorporates a section at the side for cooling the engine oil. The transmission fluid cooler is mounted
below the radiator."

Not cheap though

https://www.allisport.com/shop/performance...-nas-spec/

Post #809487 9th Jan 2020 6:39am
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Romadog



Member Since: 07 Jul 2011
Location: Warwickshire
Posts: 1685

Cheaper to buy a Britpart one Whistle

Post #809609 9th Jan 2020 7:39pm
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diesel_jim



Member Since: 13 Oct 2008
Location: hiding
Posts: 4683

United Kingdom 2006 Defender 110 Td5 SW Epsom Green

My old 3.9 EFI in a 110, I fitted a turboD radiator. Just had to change the oil pipe unions as the TD thread was different to the V8.

Apart from that it bolted right up. But..... the "cooling" bit of the TD rad is just a pipe going in and out, from top to bottom (or bottom to top), nothing mega or special.

but it worked fine with mine. and I used to give it some stick too... then tranferred the whole drivetrain into a 90, and gave it more stick....

Post #810902 18th Jan 2020 8:31pm
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