What sort of radiators are people using to keep there 1uz's cool in there luxys?
Cheers.
cooling a lexus v8 in a hilux
- hiluxsurfer
- Driver/Navigator
- Posts: 37
- Joined: Mon Dec 01, 2008 6:36 pm
- Location: West Auckland
- jonossiksilvia
- Hard Yaka
- Posts: 727
- Joined: Mon Jul 12, 2010 5:53 pm
- Location: christchurch
Re: cooling a lexus v8 in a hilux
Current 4wd: Surf Kzn185 ssrg factory Intercooled (yet to start build)
Past 4wd: toyota surf ln130, coil sas, 1uz v8 build
Past 4wd: toyota surf ln130, coil sas, 1uz v8 build
Re: cooling a lexus v8 in a hilux
i have one in an RN46 hilux,im using a holden monaro 350ci radiator and 2 subaru 2 speed fans off a legacy. when the radiator isnt full of mud it works great
Re: cooling a lexus v8 in a hilux
Put It in a fridge.
Or buy the biggest alloy radiator you have room for. And big v8 fans
Problem solved
Or buy the biggest alloy radiator you have room for. And big v8 fans
Problem solved
Dont follow me. i'll get stuck and need a tow..
Re: cooling a lexus v8 in a hilux
i've got a 95-ish ikz prado one in my LJ71, using one big fan off a taurus and a flat shroud. haven't had any overheats so far, been having 29 degree days here recently. Using 70amp wiring so i can piggyback another fan in if needed.
broke the first rad by not checking clearances properly. thought the mounts were the same, there's an extra chassis brace on mine, bottom tank was touching it. had nowhere to expand to and cracked the bottom off the cores. $300 mistake in 15mins of running.
first fan was one of those budget brand 18inch ones on the stock 3 core LJ71 one, didn't do **** all.
broke the first rad by not checking clearances properly. thought the mounts were the same, there's an extra chassis brace on mine, bottom tank was touching it. had nowhere to expand to and cracked the bottom off the cores. $300 mistake in 15mins of running.
first fan was one of those budget brand 18inch ones on the stock 3 core LJ71 one, didn't do **** all.
---
Re: cooling a lexus v8 in a hilux
I run a 1UZ in my LJ71 Prado also, using the standard Prado Radiator with a Cap put in the top. The 1UZ is running a viscous fan and keeps it plenty cold enough, even with a half ass shroud. 

Softroader VW Amarok nowadays.... 

- Sadam_Husain
- Angry bird
- Posts: 5164
- Joined: Mon Feb 20, 2006 12:00 pm
- Location: WELLINGTON
Re: cooling a lexus v8 in a hilux
as others have already eluded above not only do you need the biggest radiator with the maximum surface area and volume you can get in there you also need maximum air flow from the biggest high cfm fan and shroud as you can squeeze in there to cool the radiator.... dosent matter how big the radiator is if there isnt enough air going through it its not going to keep your engine cool 

Re: cooling a lexus v8 in a hilux
Lextreme site recommends fans with 1500cfm davies craig ones are good, could also look at plumbing in a mini radiator or two ie heater core
70 series prado (KZJ78) and 90 Series Prado (KZJ95)
- jonossiksilvia
- Hard Yaka
- Posts: 727
- Joined: Mon Jul 12, 2010 5:53 pm
- Location: christchurch
Re: cooling a lexus v8 in a hilux
also heard that running a separate tank to add more capacity inline with main rad pipes also makes a huge difference
Current 4wd: Surf Kzn185 ssrg factory Intercooled (yet to start build)
Past 4wd: toyota surf ln130, coil sas, 1uz v8 build
Past 4wd: toyota surf ln130, coil sas, 1uz v8 build
Re: cooling a lexus v8 in a hilux
Run the factory hydraulic fan. We used a Toyota Cressida diesel radiator in this.

Supercharged Lexus V8
We fixed the overheating problems in a couple of other Lexus powered trucks for people by fitting the hydraulic fan.

Supercharged Lexus V8
We fixed the overheating problems in a couple of other Lexus powered trucks for people by fitting the hydraulic fan.
Re: cooling a lexus v8 in a hilux
Rural53 wrote:Run the factory hydraulic fan. We used a Toyota Cressida diesel radiator in this.
Supercharged Lexus V8
We fixed the overheating problems in a couple of other Lexus powered trucks for people by fitting the hydraulic fan.
Hey just out of curiosity and totally off topic


What does this setup tow like?, could be just the angle, but looks like a lot of weight on the draw-bar?...
'85 Hilux crawler, 3rz, duals, 4.7's, 4.88's, ARB's, 30 spline Longfields, 6 stud SNR4x4 Histeer, Airshocks up front, coiled rear, 40" Iroks.
^^^this shite is all about to change....^^^
021 273 9942
jafa@inspire.net.nz
^^^this shite is all about to change....^^^
021 273 9942
jafa@inspire.net.nz
Re: cooling a lexus v8 in a hilux
Tows good like this, there is not a huge amount of weight on the drawbar. We experimented once, and only once, with moving the Hilux back a bit. Towing out of Rotorua going to Whangarei Winch Challenge, we decided to move the Hilux back about 6" because we thought there might be too much weight on the drawbar. After about 10km we stopped and moved it back forward to its original positions before it killed us. 

Re: cooling a lexus v8 in a hilux
Ha, Trusty Speed Wobble.
As far as cooling I went for the biggest Diesel surf rad, and 2 slimline Craig Davies fans to get the max powar! My line of thinking as there's not a lot of room, you`re better off with a bigger Rad with smaller fans than a small radiator with big fans, that said I am keeping my Aircon, and cant mount a fan on the front of the radiator.
As far as cooling I went for the biggest Diesel surf rad, and 2 slimline Craig Davies fans to get the max powar! My line of thinking as there's not a lot of room, you`re better off with a bigger Rad with smaller fans than a small radiator with big fans, that said I am keeping my Aircon, and cant mount a fan on the front of the radiator.
To Boon or not to Boon.