i have a 2.8 turbo hilux inteercooled.im looking to up grade the the intercooling system and are wondering if i should stick with the fornt mount or go to a top mount one,my front mount inteecooler is a mod air con radiator so probly doesnt do alot. so i was going to get a proper inteecooler for the front.but then a top mount came about,can anyone help? should i scrap it all together or does it make a noticble power difference and were to put it front or top?
pros and cons?
front mount or top mount inteecooler on hilux?
Top mounts are always a compromise as the heat soak up from the engine reduces the ability of the intercooler to draw heat out of the intake charge. A decent front mount will give you more power ultimately but it's just a case of being able to find a decent location for it where it's not likely to get damaged and/or full of mud.
Having said that, a mate with a non-intercooled Terrano stuck a small intercooler over the engine and just built a stainless box to house it and isolate it from the heat. The top was open and butted up against the underside of the bonnet where he cut a hole and fitted an intake scoop from a Mitsi Cordia turbo like this one:
http://www.trademe.co.nz/Trade-Me-Motor ... 932010.htm
That seemed to work pretty well.
Having said that, a mate with a non-intercooled Terrano stuck a small intercooler over the engine and just built a stainless box to house it and isolate it from the heat. The top was open and butted up against the underside of the bonnet where he cut a hole and fitted an intake scoop from a Mitsi Cordia turbo like this one:
http://www.trademe.co.nz/Trade-Me-Motor ... 932010.htm
That seemed to work pretty well.
[O]=TOYOTA=[O]
Those water to air ones are available off Legacy's pretty cheap now, I've seen a few on trade me cheap. They do require a bit of plumbing thou compared to a air to air, ie pump, remote radiator etc.
Seem to work pretty well, no worry about flow rates as they are efficient up to 205kw, the subbie boys put bigger front mounts on and then wonder why the gearbox's last even less!
And if you scrap your intercooler you will definately notice it, the engines run cooler with them and develop alot more torque, outright power is not so noticeable.
My 2 cents
Seem to work pretty well, no worry about flow rates as they are efficient up to 205kw, the subbie boys put bigger front mounts on and then wonder why the gearbox's last even less!
And if you scrap your intercooler you will definately notice it, the engines run cooler with them and develop alot more torque, outright power is not so noticeable.
My 2 cents
SWB V6 Paj with one or two mods 
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Steve_t647
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It really depends on the 4wd you do. Top mount will not get full of mud and is less likly to get damage. Front mount will not suffer heat transfer from the motor when idleing over rocks.
I have seen both and heard the issues with both, but no-one had removed one, water to air eventualy looses efficency as it warms but it takes a long time and in comps you can ice the water to fix it.
Front mount is more damageable, top mount as long as you duct air to and from it or have a electric fan to move air when you are doing slow work is the best answer I have seen. Subaru use factory top mounts and allow the air to go both ways duct from the back of the motor lower down for when idleint the air rises when driven the air entres the scoop and exits the duct under the car.
Also wrappint the turbo and exhaust so this heat is not in the engine bay is another alternative.
just my 2c
I have seen both and heard the issues with both, but no-one had removed one, water to air eventualy looses efficency as it warms but it takes a long time and in comps you can ice the water to fix it.
Front mount is more damageable, top mount as long as you duct air to and from it or have a electric fan to move air when you are doing slow work is the best answer I have seen. Subaru use factory top mounts and allow the air to go both ways duct from the back of the motor lower down for when idleint the air rises when driven the air entres the scoop and exits the duct under the car.
Also wrappint the turbo and exhaust so this heat is not in the engine bay is another alternative.
just my 2c
so tell me why a water to air looses its effiency when it warms up 
and what do you mean by warms up the temp stays the same from idle and how would the cooler warm up when its filled with only water and dosent pass through youre cooling system to gain a temp increase......
there is no better than water to air
yes i have one.
and what do you mean by warms up
the temp stays the same from idle and how would the cooler warm up when its filled with only water and dosent pass through youre cooling system to gain a temp increase......
there is no better than water to air
yes i have one.-
Steve_t647
- Hard Yaka
- Posts: 998
- Joined: Wed May 17, 2006 12:00 pm
- Location: Christchurch City, In front of the computer
OK the water to air intercooler works by pumping water up to a heat exchanger (heat from the air is transfered to the water by fin's, effectivley a radiator in reverse if you like) then the water goes back to another radiator or storage container to cool, at slow speed's or long periods on boost the warm air from the turbo heats the water.
The water does go back to another radiator to cool down before being returned to the intercooler, as it is a closed loop and water takes a lot of heat to change state (boil) it warm's slowly but is also slower to cool, there is water additives like antifreeze that can change these properties, there is also Ice to cool the water quickly (ice the heat exchanger and the radiator)
Also the more boost you run the more heat the compression of air creates, you will notice dive tanks are filled while submerged in water this is not really to stop them exploding but to remove the heat, allow more air in the tank (in a shorter time period) and so you can see leaks if you dont do the nossel up correctly, as far as exploding at the pressure in them you would not want to be near that!
Teacher mode off
This is a basic overview the main issue is the time taken for water to change state cold to warm and back, it does have a huge ability to absorb heat, look at boiling your jug and how long it stays hot for, you don't want the water to boil in a water to air intercooler tho 
you would have to run some serious boost for that 
The water does go back to another radiator to cool down before being returned to the intercooler, as it is a closed loop and water takes a lot of heat to change state (boil) it warm's slowly but is also slower to cool, there is water additives like antifreeze that can change these properties, there is also Ice to cool the water quickly (ice the heat exchanger and the radiator)
Also the more boost you run the more heat the compression of air creates, you will notice dive tanks are filled while submerged in water this is not really to stop them exploding but to remove the heat, allow more air in the tank (in a shorter time period) and so you can see leaks if you dont do the nossel up correctly, as far as exploding at the pressure in them you would not want to be near that!
Teacher mode off
This is a basic overview the main issue is the time taken for water to change state cold to warm and back, it does have a huge ability to absorb heat, look at boiling your jug and how long it stays hot for, you don't want the water to boil in a water to air intercooler tho you would have to run some serious boost for that