Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.

Rear mounted Radiators

General Tech Talk

Moderators: toaddog, TWISTY, V8Patrol, Moderators

Post Reply
Posts: 477
Joined: Mon Mar 21, 2005 3:49 pm
Location: here

Rear mounted Radiators

Post by DanielS »

Hi guys,

Chasing some info on rear mounted radiator.
Can you post pictures of were its mounted, why you mounted where you did and how effectiant it is working?

Thanks
Daniels
V8s are nice, but you cant beat the sound of a turbo working the magic on a juiced up diesel.
Posts: 564
Joined: Tue Jan 21, 2003 6:52 am
Location: Mornington Peninsula

radiator

Post by Hobzee »

I did Outback Challenge with Lawrie Sternbeck - dual cab hilux V8 with rear mount radiator. Problem was the vacun behind the cab when we went fast. The best fans in the world cant blow air in a vacum. And so we only had temp problems the faster we went. Needs some form of diverting air from sides and above - main problem being side fins would last about 1 day with us driving.

I am doing same thing with my lux but taking rear window out and running a big air duct from roof (WRX style boonet scoop on roof) down through roof and out the back window and will report back with results. I expect we wont have such a vacum.
The guy who throws dirt is the guy who loses ground ...
www.ironmancliffhanger.com
Posts: 74
Joined: Wed Apr 15, 2009 10:11 am
Location: Rockhampton

Post by td lux »

i have also thought about rear mounting my radiator, i was thinking basically running two or three snorkel type setups from the roof line down to the radiator, also with two or three thermos? Do you think enough air would push through or the "vacum" would still occur?

There is obviously many people who have rear mounted radiators, so any input or advice would help alot!

Thanks.
Posts: 3722
Joined: Sat Jan 18, 2003 7:32 pm
Location: perth wa

Post by bazooked »

dont forget about the type of radiator you would run, and ali 1 for a start in a cross flow design would be the best set up.
buggy time............
Posts: 477
Joined: Mon Mar 21, 2005 3:49 pm
Location: here

Re: radiator

Post by DanielS »

Hobzee wrote:I did Outback Challenge with Lawrie Sternbeck - dual cab hilux V8 with rear mount radiator. Problem was the vacun behind the cab when we went fast. The best fans in the world cant blow air in a vacum. And so we only had temp problems the faster we went. Needs some form of diverting air from sides and above - main problem being side fins would last about 1 day with us driving.

I am doing same thing with my lux but taking rear window out and running a big air duct from roof (WRX style boonet scoop on roof) down through roof and out the back window and will report back with results. I expect we wont have such a vacum.
Thats what I thought about there being a vacum at speed. I have organised twin aluminum dual pass radiators with a total frontage surface area of 5000 square centimeters and plan on mounting them on an angle to ensure then draw air from the the side of the cab using shrouds simular to what you described. I will post some pictures as it comes along.

thanks Hobzee
V8s are nice, but you cant beat the sound of a turbo working the magic on a juiced up diesel.
Posts: 477
Joined: Mon Mar 21, 2005 3:49 pm
Location: here

Post by DanielS »

bazooked wrote:dont forget about the type of radiator you would run, and ali 1 for a start in a cross flow design would be the best set up.
That was my thought to mate, will post some pictures of my set up.

Thanks Bazooked
V8s are nice, but you cant beat the sound of a turbo working the magic on a juiced up diesel.
Posts: 3098
Joined: Sat May 28, 2005 3:22 pm
Location: Melbourne, Australia

Post by PJ.zook »

Could you run a horizontal radiator that sits above a hole in the tray, and then have some basic shrouding underneath vehicle to direct the air up and through radiator from underneath while travelling fast?
Motorized three seater couch buildup:

http://www.outerlimits4x4.com/viewtopic ... 0&t=196047
Posts: 1024
Joined: Sun Oct 08, 2006 1:29 am
Location: Right behind you and coming fast!

Post by cooki_monsta »

hmmm this could potentially drastically alter your vehicles downforce
Maverick. Unlocked on 35's MOTTO: Lock, Stomp & Hold on
Posts: 3722
Joined: Sat Jan 18, 2003 7:32 pm
Location: perth wa

Post by bazooked »

were not talkn f1 cars here.
buggy time............
Posts: 826
Joined: Mon Mar 20, 2006 1:08 pm
Location: Redcliffe

Post by berad »

http://www.outerlimits4x4.com/ftopic177 ... highlight=

I'm no expert on air flow etc, but the pics in the above thread look to flow at speed and protect the radiator from rocks etc whilst driving.
BBP Offroad
Boondall Backyard Performance

They call me the MR. throw cash at shiz til its comp specccccc
Posts: 217
Joined: Thu Jun 01, 2006 1:40 pm
Location: Kalgoorlie WA

rad

Post by WelchyGQ »

why not set the fans up to pull air throught th eradiator instead of push?

that way you are goign with the air flow instead of against it?

Welchy
97 TD42 Y60 Coil Cab. 2" Body lift. 4" Spring 35" Maxis Creepies, 33" Claws, F and R lockers,Tube winch Bar, Custom Tray, Hi Mount with 6HP Motor, Sill cut, MTQ turbo
Gladstone4wdclub.com.au
Posts: 7230
Joined: Mon Oct 21, 2002 10:42 pm
Location: Brisbane

Post by MissDrew »

I run a rear mount radiator on my hilux and have done so now without any problems or changes for 3 years now.

It is mounted vertical right behind the cab (as head board on the tray) I have AU falcon fans that pull the air threw them from front to back. I have NO air pocket vacum problems ever.
I also have a manaul over ride switch that lets me turn the fans over riding the thermo switch. If I turn them on I can lower the temp down to about 80deg when ever I want, even if I am on the gas and driving it hard.
Posts: 1574
Joined: Tue Mar 21, 2006 7:34 am
Location: Greenbank - Home of the web wheelers

Re: radiator

Post by booflux »

Hobzee wrote:I did Outback Challenge with Lawrie Sternbeck - dual cab hilux V8 with rear mount radiator. Problem was the vacun behind the cab when we went fast. The best fans in the world cant blow air in a vacum. And so we only had temp problems the faster we went. Needs some form of diverting air from sides and above - main problem being side fins would last about 1 day with us driving.

I am doing same thing with my lux but taking rear window out and running a big air duct from roof (WRX style boonet scoop on roof) down through roof and out the back window and will report back with results. I expect we wont have such a vacum.
I had the same problem with mine in a dual cab lux and ended up putting it back in the front.
Toy: 98 TJ with some mods and some bling
Tourer and daily: 120 Prado with some mods
Posts: 477
Joined: Mon Mar 21, 2005 3:49 pm
Location: here

Post by DanielS »

berad wrote:http://www.outerlimits4x4.com/ftopic177 ... highlight=

I'm no expert on air flow etc, but the pics in the above thread look to flow at speed and protect the radiator from rocks etc whilst driving.
There some nice ideas ther I will have to sit and work something like that out.

Thanks Daniels
V8s are nice, but you cant beat the sound of a turbo working the magic on a juiced up diesel.
Posts: 477
Joined: Mon Mar 21, 2005 3:49 pm
Location: here

Post by DanielS »

Thanks guys there seams to be a lot of people have different results, I suppose it depend on how it is set up (fans, size, push pump etc etc)

Thanks for the info, I will sit down with the radiators I have ordered and work out the best place I think to fit them... weather it be drawing form the sides or pushing to the sides is yet to be determined..

Daniels
V8s are nice, but you cant beat the sound of a turbo working the magic on a juiced up diesel.
Posts: 219
Joined: Fri May 19, 2006 5:29 pm
Location: sydney

Post by albey »

Guts wrote:I run a rear mount radiator on my hilux and have done so now without any problems or changes for 3 years now.

It is mounted vertical right behind the cab (as head board on the tray) I have AU falcon fans that pull the air threw them from front to back. I have NO air pocket vacum problems ever.
I also have a manaul over ride switch that lets me turn the fans over riding the thermo switch. If I turn them on I can lower the temp down to about 80deg when ever I want, even if I am on the gas and driving it hard.
Did you have to use an electric water pump? and what engine are you running, mine is a commodore v6 which like to run hot!
if it has tit's, wheels or a motor you better have money
:drinking:
Post Reply

Who is online

Users browsing this forum: No registered users and 4 guests