oem pajero intercooler into a strada ( is tuning necessary?)

[strada-caster]

THe title says it all.

I got an OEM pajero intercooler to install into my strada.

Would i need to change anything?
fuel pump flow rate?
injector pump flow rate?
connect intercooler fan wiring to where?
do i have the same ECU as the pajero(doubtful) would my ECU be able to control my fan or should I just bypass the ECU and use an inline fuse and temp sensor to control it?

any feedback is good feedback.

thanks for the help.

[strada-caster]

Where is the thread on air-water intercooler install the delicas were looking into. I can't find it anywhere for reference.

[Jaz]

Here's one that might help:

http://www.delica.ca/forum/intercooling ... tml#p32077

I'd suggest that it would be worth getting a tune after IC install, as it'll certainly help with efficiency having cooler air flowing in through the throttle body.

[Chewy]

You may want to look at a Pajero Injection pump as it has a temp sensor to adjust fuel mixture based on the air being fed to the engine post-intercooler. Glen at ccautos or Butch at CVI will likely have spares, and although they aren't cheap, your rig will be easier to start and better on fuel, and best suited since it matches the IC (also could get butch to crank up the boost a bit and do some fuel tuning for ya!!)

[jessef]

Disable the fan.

It sucks hot air up from the engine and gets crud in it as well.

I removed the IC fan from our Pajero and aside from the extra space and breathing area for the intercooler, there was no other difference with it on or off.

Some guys replace it with a better fan or reroute air to it from the wheel well or snorkle if equipped.

Like Chewy said as well. Swap out the IP from the donor Pajero with one in your Strada.

[strada-caster]

Thanks guys. very informative so far.

I've read about removing the fan on the pocuk.com website. seems like alot of them removed the fan since it basically never even turns on unless you are sitting in traffic at 25 degC (they made thier climate sound mild and rainy). Around here we can sit in traffic quite often and have very hot summers. also the 4x4 side of things when there will be no wind going through the engine bay and you're working the engine pretty hard. THere's no point in making a heat sink.

I'm most likely going to keep the fan and am thinking about adapting a duct from the front of the hood to a sealed connection on top of the intercooler(if I can, lotsa work) and figure the fan would be highly helpful in the case of drawing air through that line. Very similar to the pajero setup, only I don't have a double hood making this idea hard to accomplish.

I'll have to take a look at this extra temp sensor you speak of. anyone know if the strada and pajero IP's are the same??all I would have to do is get the sensor. that would be easiest.

thanks

[jessef]

The body is the same, accessories not included.

[mararmeisto]

Re: Pajero intercooler fan. Am I to understand that it blows upwards, through the intercooler and out the intake? Instead of removing it, why not turn it around so it blows downwards, drawing air through the intercooler and the intake, over the engine. That direction would make more sense.

[strada-caster]

Re: Pajero intercooler fan. Am I to understand that it blows upwards, through the intercooler and out the intake? Instead of removing it, why not turn it around so it blows downwards, drawing air through the intercooler and the intake, over the engine. That direction would make more sense.

if thats what it does, i'm definitely reversing the directiong of the fan, but i'm pretty sure it would draw air through the ducting and the intercooler into the engine bay.

[strada-caster]

So, cleaning of the intercooler has begun(anybody have a good way to clean the inside of the rubber hoses, not sure if diesel will eat the rubber or not). I'll be finding the optimal position for it in the strada this weekend. I've always had the question 'what is the tube attached to the bottom of the cooler for???

my only thought is it creates a pressure bubble the main air flow has to get accross creating turbulence(rough air flow) throughout the system. And I believe that would increase the cooling rate (compared to smooth(laminar) flow).

intercooler with.jpg (46.54 KiB) Viewed 9814 times

I also found a pic today of a setup without the tube(I don't think it had a turbo, wierd). can't seem to upload it but you get the drift.
anyone have any other thoughts why the tube is there?

[Strada 92]

I've just bought an intercooler from a MK1 Pajero and i don't have this tube.My opinion is that this
tube is just to reduce noise,just like a muffler.I don't know.

My intercooler have a thermo-switch on one side.It turn on the fan when it reach the required heat.
You don't need ECU,just a relay and a fuse,15A.You can also put a switch of your own to bypass the
thermo-switch and activate the fan when you want.

Strada doesn't have ECU to control engine.The only 'ECU' is for the Glow Plug system and it's not an ECU.

You don't need to change anything to your tune-up if your truck run good.The intercooler give more
power because it reduce air temperature coming in the engine.If you want a bit more power,you can do
the Galium modification.Give more fuel when on load.There is a post on that.

For the hood scoop,check on e-bay.I bought mine from Australia,Ebay member bosso_1.The name of the item is:
Bonnet scoop fibreglass GU Nissan patrol Multi-fit.It cost me around 150$.

And what have you done with the Intake?On the Strada,the elbow from the intake is straight forward
the turbo outlet.But with the intercooler, i 've rotate the elbow 180' and the rubber hoses don't fit
straight on turbo outlet.I think intercooled Pajero don't have the same intake.I had to do some
modification to the intercooler piping.Let me know your solution.

[mararmeisto]

Okay, I just checked my '94 SWB (Generation II Pajero) and it too has that 'extra' pipe off a junction. I didn't take fluid dynamics, but I do remember reading somewhere that when a fluid hits an obstruction a shockwave is sent back along the direction of flow, looking for an easier path. That branch could be an 'out', thereby not disrupting the flow from the turbo to the intercooler. Or, it could be acting as a sort of accumulator, storing extra pressure for when the turbo spins down momentarily, like when shifting gears. But I'm just spitballin' here...

As for the intercooler fan blowing 'out' when it comes on (remember, it's underneath the intercooler and apparently blows upwards when it is fired off), this makes sense, from a cooling perspective. So, your engine is hot, probably because you're lugging along, slowly, without much airflow through the louvre (hood scoop), down through the intercooler and across the engine. The fan kicks in, but it's not for the intercooler, it's for the engine. And which way does it blow the hot air surrounding the engine? Upwards and out through the hood scoop, drawing cooler air from underneath the vehicle, up over the engine, cooling it.

Finally, as far as 'tuning' the engine after installing the intercooler, what little I've read up on intercooling, you may have to increase the boost a bit to compensate for the extra distance the air has to travel to get to the intake; and you may have to 'up' the injector pump a bit because now you're cramming more air into the engine. More air compared to less fuel - it's going to burn lean, less power, white smoke.

But I'm no mechanic, so we should probably get one or two of them to chime in, or at least someone who might have done this sort of thing before.

[strada-caster]

.My opinion is that this tube is just to reduce noise,just like a muffler.I don't know.
, i 've rotate the elbow 180' .

Good thinking, it could act as a muffler. I know these engines fitted with an intercooler are much quieter(comparing my strada to my brothers pajero..mine sounds like a tank)

How does the old strada look with a hoodscoop??I currently like the look of mine without one.

I too will be rotating the intake elbow 180' to accomplish this install. and yes the pajero has a different intake manifold. they have an EGR running into our intake inlet and another inlet one cylinder closer to the firewall where the oem tubing attaches to making us have to alter our setup.

I didn't take fluid dynamics, but I do remember reading somewhere that when a fluid hits an obstruction a shockwave is sent back along the direction of flow, looking for an easier path. That branch could be an 'out', thereby not disrupting the flow from the turbo to the intercooler. Or, it could be acting as a sort of accumulator, storing extra pressure for when the turbo spins down momentarily, like when shifting gears. But I'm just spitballin' here...

Also good thoughts, An accumulator is definitely a possibility. I should have thought of that considering I am a mech. eng. gotta kick my brain into overdrive here.

As for the intercooler fan blowing 'out' when it comes on (remember, it's underneath the intercooler and apparently blows upwards when it is fired off), this makes sense, from a cooling perspective. So, your engine is hot, probably because you're lugging along, slowly, without much airflow through the louvre (hood scoop), down through the intercooler and across the engine. The fan kicks in, but it's not for the intercooler, it's for the engine. And which way does it blow the hot air surrounding the engine? Upwards and out through the hood scoop, drawing cooler air from underneath the vehicle, up over the engine, cooling it.

I still don't agree with the fan shooting air up(out through the hood). you would be cooling the intercooler with engine bay temperatures...there would be almost no point as the cooling effect would be so minimal. cooling with 25 degree temp vs. 150+ degree temp will make an enormous difference. If the fan is doing this, i will be reversing it for the reason i just stated and the following. I will check the operation of the fan during install.

A side note:
having a hood scoop does practically nothing if you cannot change the pressure on one side of it. If you have the same pressure (atmospheric) inside the engine bay and outside there will be practically no airflow. the only reason the engine bay recieves cooling air is because the underbody is open and creates a vacuum as the vehicle moves drawing air out of the engine bay. that air coming out then has to be replaced through the grill. also a large pressure bubble is created at the front of the vehicle so pressure in front is larger than inside the engine bay creating airflow. the latter is the main reason that airflow occurs, not the vacuum as it is probably minimal.NOTE HOW THE RAD FAN OPERATES SUCKING AIR THROUGH THE COOLING FINS

I should get back to work. keep up the input, my brain is starting to burn.

[mararmeisto]

I was correct: the 'extra' pipe on the intercooler is a dampener or muffler. This would explain why a GenI Pajero doesn't have it, but a GenII does.

As for the direction of the fan, when it gets too hot, it's to blow hot air out of the engine bay, not cool the intercooler. I agree, it would be pointless to blow hot engine air through the intercooler, but I don't think that's the intent.

Be sure to take some before and after pictures so the rest of us can see how you did this. Should be interesting.

[Strada 92]

I can't send you a photo of mine with the hood scoop 'cause it is not already painted.
But check on the web for a Mitsubishi L200 Savana 2000-2003.It's the brazilian version of the
Strada.It come with an intercooler and factory equipped for true off-roading.Really nice.
Here a picture.