Intercooled 12-ht

[haffi]

Thought someone would be interested in this.

To day I added a water-cooled intercooler to my 12-ht engine.
The cooler replaces the tube from the turbine to the intake manifold. A water cooler, water reservoir and a water pump is located in front of the radiator.

I havent had a chance to test the performance of the car after the cooler so I can´t tell if it is a much diffrent.

The first pic shows the water cooler, the pump and the reservoir.
The second shows the cooler, hoses and tubes I made.
The third shows the cooler in place.

[haffi]

The fourth pic shows the cooler in place from a diffrent view.
And the fifth shows pipes from the turbine to the cooler.

Haffi

[Stone]

Interesting stuff, Haffi...thanks for sharing. I think I'm going to link this to our FAQ section also.

One thing that I notice right away is how small the intercooler unit is. Especially considering that this is supposed to be a water-air cooler...I would have imagined that the size should have been a bit bigger. Of course I'm not an expert in turbos or intercooler in any way, but I did take my 13B-T to a local ricer shop and they indicated a water-air cooler that appeared significantly larger than the one you have pictured. And considering that your 12H-T has a larger displacement than mine...I'm wondering if you are even getting efficient cooling happening, or not?

Do you have any way of taking temps pre and post your intercooler? And do you have pics of what that cooling unit looks like inside? Maybe some dimensions? Thanks, and good luck!

[The Dude]

I looked into this but the guys at the local speed shop talk me out of it.

To much heat wash. The guys at the track get awsome results filling the resoivoir with ice cold water just before a run.

very cool

let us know if you notice a difference

[roscoFJ73]

Originally Posted by The Dude

I looked into this but the guys at the local speed shop talk me out of it.

To much heat wash.

Just curious as to what you mean by" heat wash"
Does this mean it is too efficient and draws too much heat away?

[Stone]

Originally Posted by roscoFJ73

Just curious as to what you mean by" heat wash"
Does this mean it is too efficient and draws too much heat away?

The other way around. Because the intercooler sits on top of the engine, heat from the engine and exhaust manifold rises up and heat transfers to the intercooler, negating some of its effects.

The ricer shop that I went to recommended putting a small water-air cooler in front of my airbox in order to avoid this problem. I was originally planning a similar setup on top of my engine, like a Subaru...but they didn't think that would be worth the effort.

[haffi]

Well I have been driving for about 2 hours today, just in town no higway driving. When i stopped I opened the hood an I touched the pipes on both sides of the cooler. I felt a diffrence I belive. Not much but a little. I might try to measure the temp somehow in the nex days.

The water in the reservour was not cold, it was warm, It felt quite comfortable sticking my finger into it

Maybe a hoodscoop of some kind would be a good idea to flush the heat from the engine down with colder air?
I might also try to isolate the cooler from the engine? Perhaps with a thin metal plate below it? I bought that stuff used for about 1/4 of the prize of it so I belive this worth the effort for me.

Haffi

[Stone]

Haffi:

I think the hoodscoop and heat shield between the intercooler and engine would be a great idea. It might also cool your turbo down a little while you're driving. Sheldon has done a ceramic coating on his exhaust manifold and turbo housing...I hear this is a good way of keeping under hood temps lower. Just some ideas.

It's always worth the effort, and you deserve credit for in effect pioneering this type of modification for us. So I'm sure many out there who have a 12H-T would like to toast a your way.

[Tapage]

The intercooler setup for all kids of tubro system are measured in CFM . ? for example .. just to know the real and specific performance for a intercooler unit ..

[bigbrowndog]

This is the set up on a Nissan Patrol 3 liter diesel Ute , similar to what you are attempting. Perhaps not ideal compared to an intercooler out front but it works very well on the Patrol perhaps someone should tell Nissan.LOL. The bonnet also has a small air scoop. Believe me these units can really haul.

[bigbrowndog]

This is an intercooler stuck out front of a 60 series wagon. The motor is a 2H.

[brownbear]

Originally Posted by Stone

but I did take my 13B-T to a local ricer shop and they indicated a water-air cooler that appeared significantly larger than the one you have pictured.

Could it be Stone that this shop has no clue as to what the airflow would be in your diesel and are only thinking in Gasser terms of airflow. Where as a 3.4 gasser would be huge airflow. ???

Or do they know how to work out diesels for airflow.???

I imagine ricer shops would have no clue to diesel stuff.

[Stone]

Hi Darryl:

The CFM would basically be calculated from engine displacement and RPM, right? I think they have an idea as to how much roughly my engine would require. This ricer shop is near Piers Diesel Research...I'd figure those guys talk to each other once in a while.

[zander]

I had thought about a hood scoop for an intercooler as well. Actually I was wondering about it for moving the AC rad so as to improve the effeciency of the engine radiator especially on really hot days and steep hills. (pretty much when you want the AC on right?)

The Nissan patrol pic is good to see this in action. Any other experience with hood scoops out there? Good hood scoop sources?

[Tapage]

Originally Posted by zander

Good hood scoop sources?

I see good ones in summit .. and with good prices.

[haffi]

It´s working. The last few days I have noticed a diffrence. When driving up a hill where I had to shift down to 2´nd gear. I can now drive in 3rd gear without a problem The cruiser also feels a little quicker... But the best part is the extra torque.

I have also been looking at hood scoops. My local used part dealer is looking for scoop from a Izuzu Trooer he belives he has somwhere in the back. I migth get it tomorrow. The Trooper has original intercooler placed on top of the engine (similar to the Nissan Patrol) but a much bigger scoop. And it looks like it will fit the cruiser properly. I will post a pic if it fits.

[sandcruiser]

I'll see if I can grab a shot of the 4runner intercooler-- a lot like the Nissan above, I think.

Pretty cool idea. I'm curious to know how hot the water gets? Seems like you could flow veggie oil through the works and get preheat on the oil while cooling the air.... maybe.

[nickw]

How much did all this end up costing you?

[haffi]

I bought the air cooler, the water cooler, the reservoir, the pump and some silicone hoses used for about 158 usd. Then i bought some pipes, hose clamps, bolts and some more hoses for maybe 80 usd, so everything for about 240 usd.

[bigbrowndog]

This is how the air scoop looks on the Nissan. All neat and functional. cheers

[bigbrowndog]

Originally Posted by zander

I had thought about a hood scoop for an intercooler as well. Actually I was wondering about it for moving the AC rad so as to improve the effeciency of the engine radiator especially on really hot days and steep hills. (pretty much when you want the AC on right?)

The Nissan patrol pic is good to see this in action. Any other experience with hood scoops out there? Good hood scoop sources?

We often get temperatures in Oz that are well into the 40 degrees celcius, the air is used all the time in the north with no problems so long as the cooling system is ok. Weather forcast for today is is mid 30s with 90% humidity, will give you an idea. cheers

[Tapage]

Originally Posted by haffi

I bought the air cooler, the water cooler, the reservoir, the pump and some silicone hoses used for about 158 usd. Then i bought some pipes, hose clamps, bolts and some more hoses for maybe 80 usd, so everything for about 240 usd.

very very good .. !!! so cheap.

[haffi]

Added a hoodscoop. Bought a universal fiberglass scoop in a local ricer shop. Looks kinda cool to me...

[-uhuru-]

it looks stock! good job!

did you make those flares?

[haffi]

No I bought them from a fiberglass-shop, but had to work the edges of them to make´m fit the fenders perfectly.

[bigbrowndog]

That air scoop looks great. Would suit the HJ75 also,LOL. Will have to look into one. Was wondering what is all that crap on your motor or is it the picture? Maybe sprayed on insulation to keep it warm.

[Radd Cruisers]

Denco doese a simular kit, simple install and good gains.

The kit is a self contained unit with radiator and the radiator is placed on top of the engine, very compact.

I will have to try out thier water to air kits one day.