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Thread: Aluminium high capacity radiator

  1. #1
    Join Date
    Jan 2011
    Location
    Burpengary, QLD
    Posts
    504

    Aluminium high capacity radiator

    Hello people,

    I recently started looking around for a full aluminium radiator, as anyone else who has looked will know, there's not a great deal of choice.

    Local radiator fabricator quoted $1460, bit rich for my blood, and the desert coolers have a great reputation for quality but with postage I was still quoted between $900 and $1000, which still seems a lot for a car that originally cost $3000.

    I kept looking and found an option from a company called Direnza, online reviews were mixed in the extreme, everything from "everything they make is rubbish " to "excellent product " so in the end I got in touch with them, in the UK, including postage, $427 to my door, so I decided to take a punt.

    Arrived on the day they said it would, postage had dented a couple of brackets (bit of negotiation got a $45 refund for the trouble and they did offer to have it collected and replaced at their cost ).I've been a metalworker for over 30 years so I gave it the once over when I unpacked. The welding wasn't the best I've ever seen, but it was far from being bad either, perfectly acceptable, it's a full aluminium fabrication with a twin core that is 55mm thick as opposed to the standard 42, there should be a picture of the two together for comparison.

    Fitting was easy, the side brackets are a bit random so I just bent them open a bit with a screw driver and pushed them back around the fixing points once it was in. Only one of the lower fixing points lined up with the hole, and they were tapped out to m6 rather than the standard m8, but otherwise a straight swap.

    Since it's been fitted we've had nothing but rain so I have no idea if it has reduced the operating temperature, but I will keep you posted.

    Anyone looking for a budget aluminium radiator for the P38 should give these a look if my experience is typical.

    20171013_130621.jpg20171013_090836.jpg20171013_090919.jpg20171013_091015.jpg
    P38 Range Rover , the best car in the world, when it's working

  2. #2
    Join Date
    Jan 2016
    Location
    Netherlands
    Posts
    138
    It is hard to see on the pictures but is the spacing between the fins the same? I should think that a larger radiator with larger fins could help in reduce the buildup of dust (as was evident in your original radiator) so I was kinda hoping to find one of those

    Great post by the way and thanks!

    -P

  3. #3
    Join Date
    Jul 2006
    Location
    Brisbane, Inner East.
    Posts
    9,020

    Al. radiators

    Google Speedway Motors, Lincoln, Nebraska, and search their site for radiators. Extensive choice and quite reasonably priced.
    URSUSMAJOR

  4. #4
    Join Date
    Jan 2011
    Location
    Burpengary, QLD
    Posts
    504
    Quote Originally Posted by prelude View Post
    It is hard to see on the pictures but is the spacing between the fins the same? I should think that a larger radiator with larger fins could help in reduce the buildup of dust (as was evident in your original radiator) so I was kinda hoping to find one of those

    Great post by the way and thanks!

    -P

    The fin density,( would it be fins per inch ) , looked to be about the same as the original, to be fair the build up was more mud than dust, wet day in the glasshouse mountains can do that, I just need to find the best way to get in there and clean it, the old one still had daylight clearly visible through the fins, I'm just not sure the mud insulation was helping heat transfer all that much. .

    Weather has warmed up a bit now, mid 30's in the afternoon sun, and it seems to be having a much easier time than the standard rad.
    P38 Range Rover , the best car in the world, when it's working

  5. #5
    Join Date
    Jul 2006
    Location
    Brisbane, Inner East.
    Posts
    9,020

    Radiators

    Here is a link to speedway Motors - Cooling Systems

    Muscle Car Radiators - Free Shipping @ Speedway Motors

    Cooling Parts - Free Shipping @ Speedway Motors

    Oval Track Radiators - Free Shipping @ Speedway Motors

    Have a browse through their catalogue. Your eyes will pop.
    URSUSMAJOR

  6. #6
    Join Date
    Apr 2010
    Location
    Lower Hunter Valley NSW
    Posts
    315
    I'd be interested in an all alloy radiator that is up to Aussie conditions. My engine will slowly get hot at idle which means either my viscous fan hub is dying or the radiator just isn't up to the task. Please keep us posted this summer!

  7. #7
    Join Date
    Jul 2006
    Location
    Brisbane, Inner East.
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    9,020
    Quote Originally Posted by banarcus View Post
    I'd be interested in an all alloy radiator that is up to Aussie conditions. My engine will slowly get hot at idle which means either my viscous fan hub is dying or the radiator just isn't up to the task. Please keep us posted this summer!
    Have a look at the Speedway Motors website as per the post above yours. They sell radiators capable of cooling 700 hp big block V8's
    URSUSMAJOR

  8. #8
    Join Date
    Feb 2013
    Location
    Gosford, NSW, Australia
    Posts
    2,412
    Quote Originally Posted by banarcus View Post
    I'd be interested in an all alloy radiator that is up to Aussie conditions. My engine will slowly get hot at idle which means either my viscous fan hub is dying or the radiator just isn't up to the task. Please keep us posted this summer!
    The Aussie Desert Cooler radiator has no problem keeping my 4.6 at the right temperature.

    I also use a high flow thermostat

    Steve
    MY96 4.6 HSE P38. Niagara Grey; "The Phoenix"
    MY99 4.6 HSE P38. LPG, Blenheim Sliver; "Voldemort" burnt to a cinder
    MY79 RR Classic, Gone, MY57 Series 1 SWB, Long gone
    P38 write ups and info on my website http://p38.hts.com.au/

  9. #9
    Join Date
    Feb 2010
    Location
    Truganina ( Hoppers Xing )
    Posts
    556
    Ive had Aussie desert Cooler in my 4.6 for several years now - best money i ever spent never an issue no matter where or temp, I also had bleed screw fitted to top tank to make bleeding a breeze. Although having said that only ever bled when initially installed no loss of coolant ever.
    Fitment was as simple as removing old radiator & attaching shroud to new one & installing -straight swap!

  10. #10
    Join Date
    Apr 2010
    Location
    Lower Hunter Valley NSW
    Posts
    315
    Yeah those Aussie Desert Coolers have a good reputation. Does your fan shroud fit properly too or is there a little fine tuning needed? Are they all triple pass as well? Sorry for the hijack

    Oops, sorry, just found your thread on this fantom.

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