possible intercooler for landcruiser

[jakwoo39]

can anybody show me any pictures of their intercooler fitments to landcruiser 70 series, looking to do mine, but cant see any practical way to fit a top mount to my 13bt as there doesnt seem to be enough room.
will a front mount make much turbo lag?

[andrew007]

i would put a pwr barrel intercooler on,i have top mount & u get alot of heat when 4wd.check out lastest 4wd action mag,they do a test on intercoolers etc

[zephyrheaven]

If youre in Chch NZEFI had some really nice water/air intercoolers a while ago - plumbing looked pretty simple & of a good quality

[strx7]

even with the extra piping and cooler volume of the intercooler being at the front, it will come on boost sooner and pull better down low with the intercooler, trust me.

a front mounted intercooler is the best bang for buck and reliabilty mod you can do to a turbo deisel

[kbushnz]

IMHO (waiting for the flames to lick at my ...)
What ever you fit will be a compromise...
Front mount = great on road plenty of cool air but off road.....Mud, water....and driving slow...hmmmm

Top mount = ok on road.....but off road not as effcient and heat soak but it doesnt get full of mud....And you can always put in a fan...

Water/Air = ok on road....But off road, radiator can get full of mud....But I would say its inbetween front and top......But then theres all the water plumbing, pump, radiator and tank......

I went top mount....It did make it breathe better and dropped EGT's..
I run a fan....when going slow....

Can't comment on rest only my observations.....

But something is better than nothing !!!

[strx7]

IMHO (waiting for the flames to lick at my ...)
What ever you fit will be a compromise...
Front mount = great on road plenty of cool air but off road.....Mud, water....and driving slow...hmmmm

with a front mount - go into a river - instant extra cooling
slow driving - so what, not IDEAL, but still air flow cooling the core.

getting it caked with mud is the only thing you have to be weary of, and even then, it is more so for blocking the radiator's airflow than anything. Even caked solid of mud a FMIC will still cool better than an interheater placed on top of the motor absorbing all the engine bay heat.

[IcedJohnno]

IMHO (waiting for the flames to lick at my ...)
What ever you fit will be a compromise...
Front mount = great on road plenty of cool air but off road.....Mud, water....and driving slow...hmmmm

with a front mount - go into a river - instant extra cooling
slow driving - so what, not IDEAL, but still air flow cooling the core.

getting it caked with mud is the only thing you have to be weary of, and even then, it is more so for blocking the radiator's airflow than anything. Even caked solid of mud a FMIC will still cool better than an interheater placed on top of the motor absorbing all the engine bay heat.

ST Rexy 7
I get the interheater bit but why if a FM is caked with mud will it still cool?
As for cooling your engine in a river, when have you ever needed full sustained power for long periods in a river! The main radiator and the turbo will be getting extra cooling as well.

You state that slow driving still gives air flow over FM. Not necessarily so!
I see F-all airflow at 3km or less.

My dilemma with exactly this issue (what type of charge-air cooler) is thus;
The most my truck ever gets thrashed is off-road cutting a steep track in 2 feet of near new snow. Every weekend immediately prior to season opening.
20 minutes of throwing rocks off 4 big chains, diffs both locked up, at 4300rpm in 2nd low, sustained. Or 2 hrs, as above but with breaks (lots of digging) as well, when the snow is too crusty or deep.
This 20mins is for about 1km, so way less than walking speed; 3km/h. When towing a trailer up this as well, (2nd or 3rd trip up) I can get 50 to 100mm of rocks and gravel across the whole trailer bed, as well as the 150mm deep of snow.
The on-road thrashing which it gets a lot of is less abusive and sure a FM will work fine here. But I run an off-road 4 wheeler and use it as such.

So OK you could say the FM will work well cos the snow will cool it. Yes but if its in front of my radiator, its vulnerable to ice chunks, and that's 3 cooling elements to block up in mud when I get to play......

My thinking has been water to air, but I still have to find a suitable place for that radiator.
I get that the same airflow issue exists, so do I need a water reservoir like the BanksPower Sidewinder Dakota had Lake side? I am not making 735 hp and 1300 lbs-ft torue though! Or is there a way I can be efficiently cooling at very low airflow?
Where to put the radiator?
My -71 Prado is not a ute, so it needs to be somewhere on the front end.
Been looking recently for calcs to work out sizing and found not much yet. Any ideas? Am wanting data based, not 'well bigger is better' please.

P.S. Sorry to thread-jack Jakwoo but it is relevant I believe.
Cheers Johnno

[kbushnz]

My thinking has been water to air, but I still have to find a suitable place for that radiator.
Where? My -71 Prado is not a ute, so it needs to be somewhere on the front end.
Been looking recently for calcs to work out sizing and found not much yet. Any ideas? Am wanting data based, not 'well bigger is better' please.
Cheers Johnno

I had the same problem with my KZJ78, didnt want more mud catchers out the front....with possibility of blocking airflow to engine radiator.
One idea was to mount the water/air radiator off to the side like a top mount and a little scoop thru hood and a fan.
Partition it off away from engine bay....but I have too much stuff under the bonnet as it is and didn't want to loose a winch battery bay ....
That was my thinking a few years back......
But gave up on the water/air choice and went top mount....
The pipe work was way easier....I know it heat soaks but it was cooler than not having one...As I used a temp chart plotter to do before and after mod temps, the data should be in one of my posts here on the forum.

[rangimotors]

for my bit of useless contribution of the day i actually like having a front mount as a mud catcher. 2 mins to take out and give a rinse off and no worries with having to bleed the radiator etc. Also nice option to cary a straight bit of pipe to you can pull the intercooler out all together (if its jammed with mud or damaged) and link it out with the bit of pipe.
win win.

[strx7]

ST Rexy 7
I get the interheater bit but why if a FM is caked with mud will it still cool?

As for cooling your engine in a river, when have you ever needed full sustained power for long periods in a river! The main radiator and the turbo will be getting extra cooling as well.

You state that slow driving still gives air flow over FM. Not necessarily so!
I see F-all airflow at 3km or less.

Yes but if its in front of my radiator, its vulnerable to ice chunks, and that's 3 cooling elements to block up in mud when I get to play......

My -71 Prado is not a ute, so it needs to be somewhere on the front end.
Been looking recently for calcs to work out sizing and found not much yet. Any ideas? Am wanting data based, not 'well bigger is better' please.

Cheers Johnno

An intercooler is just a massive heatsink. if the fins get caked full of mud, the front edge of the core still gets ambient air flow, you would need to be running constant 15psi thru it for hours before it will get as hot an a top mount does.

As for going into a river, if you have been boosting for a long period of time, and you come to a river and drown your intercooler in cold water, it will cool the core, so when you need boost again, you will have greater cooling benefits than usual.

If slow driving doesn't give airflow thru a front mount, how does your truck not cook itself everytime you go slowly!!!!! you have either a viscous fan (best) or an electric fan (not best) sucking air through your radiator to keep it cool, the air comes from the front of your radiator, which a intercooler parked there, the air goes through the intercooler aswell. if you are really worried about it, set up a couple of nozzles to spray the intercooler with a blend of meths and water, which will absorb heat from the core as it evaporates off it.

Has your radiator/air cond radiator (assuming it has aircond) been punctured from ice chunks??? an intercooler core is actually hardier at taking impacts than both a engine radiator and an air cond radiator.

I fitted a 450mm x 150mm x 65mm front mount to my HDJ81, combined with a 3 inch exhuast system, I gained 37% power and torque increase (at peak) down low in the rpm range i have gained 70-80% torque over standard and that is a small intercooler at the same boost level!!!! in the peak of summer on a high 20's day after a long up hill slug, my inlet air temperature only got to 70 degrees, with no intercooler it would have been above that the instant i came on boost. not sure what motor you have in your 70 series but if it is a 2LT or 1KZ then a 450x150 or 450x180 intercooler would be highly upto the task.

[HARD L200]

a front mount IS THE ONLY way to go. it will only occasionally get abit of mud in it and thats it. and if you have a proper engine, with a vicous fan that is always turning, even at a crawl some air will be sucked through it by the fan. the long piping only gives it a small lag but what is after the lag is pure power. and if your driving in rain the rain makes it even cooler just like sweat on your brow. IMHO i see no benifits of a top mount interheater even at speed the engines exhaust & block will make it hot still. the only good thing about the top mount is you can run more boost than standerd and it has short plumbing.

[jakwoo39]

a front mount IS THE ONLY way to go. it will only occasionally get abit of mud in it and thats it. and if you have a proper engine, with a vicous fan that is always turning, even at a crawl some air will be sucked through it by the fan. the long piping only gives it a small lag but what is after the lag is pure power. and if your driving in rain the rain makes it even cooler just like sweat on your brow. IMHO i see no benifits of a top mount interheater even at speed the engines exhaust & block will make it hot still. the only good thing about the top mount is you can run more boost than standerd and it has short plumbing.

the possible turbo lag really concerns me, i used to have a TT supra and when on boost it went like hell but waiting on the turbo meant that NA cars could keep up till about 3rd gear.

has any one out there actually front mounted a 13bt?, looking for pics to copy

[strx7]

the possible turbo lag really concerns me, i used to have a TT supra and when on boost it went like hell but waiting on the turbo meant that NA cars could keep up till about 3rd gear.

that isn't lag, that is boost threshhold, 2 very different things.

a fmic will decrease lag, and make no difference to the boost threshhold.

[jakwoo39]

bit confused now, pretty sure it was lag had to wait a few seconds for turbos to produce enough boost to get going again between gears
whats boost theshhold then?

[strx7]

boost thresh hold is the rpm required for the engine to have sufficient exhuast flow to make positive manifold pressure.

Lag is when driving at an rpm above the boost threshhold the time taken from putting your foot down till when you get full boost pressure (whatever that maybe)

if your supra was actually laggy, it probably had something wrong with it (ignition timing retared or is was a 1GGTE and had a MASSIVE intercooler core and too larger piping used or something along those lines.

has your 13B-T got lag at the moment?

[HARD L200]

Well then what is it if im cruising through town in 3rd doing bout 1200rpm and i know the turbo starts working at about 2100rpm and i put my fut down and then nek minnit when the revs his 2100 it just goes nuts, and all of a sudden im doing 4700rpm and about 90 kph in a 50k zone is that boost threshold? Anyway if you want a pic of my front mount on my L200 it is below but maybe this might give you an idea. i am running 2'' pipes. the top pipe is the cold retern and after a hard drive i can put my face on it cause its not that hot, but the hot charged pipe i can barely put my hands on it.

[strx7]

Well then what is it if im cruising through town in 3rd doing bout 1200rpm and i know the turbo starts working at about 2100rpm

it means that 2000-2100rpm is the boost threshhold - the rpm required to make the turbo go

i am only running 2 inch pipe on my 4.2 landcruiser.
2 inch pipe is adequate for 400 odd HP worth of intake flow.

landcruisers are probably the easiest vehicle to plumb an intercooler on because there is a gap between the body and chassis that you can use for your i/c pipeing

[HARD L200]

Thank you that clarification strx7. yea landcruisers do have abit of space to run piping but my L200 had only a small hole to fit the oil cooler lines out so i extended it . i figured that 2'' would be big enough cause my cousin has a rb26dett putting out 647rwhp and he only has 2.5'' turbo and intercooler pipes so im like 2'' is good.

[jakwoo39]

boost thresh hold is the rpm required for the engine to have sufficient exhuast flow to make positive manifold pressure.

Lag is when driving at an rpm above the boost threshhold the time taken from putting your foot down till when you get full boost pressure (whatever that maybe)

if your supra was actually laggy, it probably had something wrong with it (ignition timing retared or is was a 1GGTE and had a MASSIVE intercooler core and too larger piping used or something along those lines.

has your 13B-T got lag at the moment?

it was a 1g with a big FM at the start then i swapped out to a factory one, but still wasnt impressed.

and im quite happy with the 13b-t at the moment i never really feel like im waiting on it to spool up

[HARD L200]

only every now and then i wait for my turbo to spool up but i dont mind cause when it does its good.