Again...4WDBits intercooler.

[ecco123]

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Thank you syche.

I hadn't seen the other forum thread. Lot's of new stuff.

So, do you think the scoop in a 12v is totally worthless or would it help some with the heat sink?. Why not a scoop and a Fan?. I'm mounting the intercooler this weekend, should I expect some noticeable improvement just by installing it (my pump is already tweaked) or do I have to work on some scoop/fan/inlet to make it work?

Some other ideas that other 4wdbits intercooler owners had in the spanish forum:

1) No scoop, and no fan, just lift the rear of the bonnet and removing the rubber gasket on there to improve the airflow under the bonnet.

2) A fan without scoop, to force the air that is under the bonnet to circulate through the intercooler fins.

[syche]

Hi Ecco,

Lift the bonnet is not a good idea at it will make the worm air form the engine bay to flow near by the IC, so it won't cool it. The only way to go is a scoop, a well placed scoop. Just tape some wool stipes on your hood, and you will have a perfect picture of where to put it , Then you might need to drive the flow back to the ic for 12V.

We also have a lot of guys here who mounted the scoop right over the IC and are satisfied. We probably could get better cooling with a better position, but it already cool down enough so they really se a difference before and after the scoop .

Regarding fans, just go and check on patrol forum in australia. They tried and most of them are going back without fan as over 60/70km/h the fan actually slow down the air flow. I have an other idea witch i will develop later on this forum, but probably in french, i can translate it if you need.

A Vaccum flow system

[ecco123]

Thanks a lot Syche. I'll keep a very interested eye on your vacuum idea. I also saw in this same forum a guy that modified the 4wdbits mounts to make it sit higher. That way there might be place to locate a fan under it. I didn't understand the text but by the pictures didn't seem difficult to do ,is it. Anyway, I think I will mount the intercooler just as it is at the moment. Can I expect real improvement without scoop? Warren stated between 50 and 100 celsius degrees after turbo temperature drop without the scoop in his 1HD-FT. Have you got something similar on your 1HD-T?

[syche]

I did the install without scoop on mine. i saw a difference, but that was not huge. That was in summer time as well, so the cooler got very very quickly hot and then is not much cooling anymore.

The scoop is absolutely necessary, but in a first time you can just mount it like this and take your time to find the scoop .

Yes it is possible to lift the IC, i suggested it to 4wdbits, as well as increasing a little then angle so the core is a little more faced to the air flow.
Many things can be done but regarding the fan...fore sure it would be better undernive the ic, but...a fan is also a blocking element on air flow, there is big dead zone where there will be no air flow is the fan is mounted right on the cooler...

[ecco123]

I've seen your explanation of the vacuum system. Pretty amazing!

By the way, I have the chance of selling my 4wdbits intercooler for 375€, and we will organise a group buy for the Cross Country 4x4 one in the spanish forum that I estimate to cost between 750 € - 800 €. That's pretty much of a difference, but a Hi-Lux scoop and a fan for the 4wdbits (the cross country includes that as you know) would cost another 175, so the difference would be about 250 € - 300 €.

The cross country intercooler is bigger and it's more on the front, so better airflow, but many people think the 4wdbits one is big enough for the power of the HDJ80 and, being smaller, it will have less pressure drop and turbo lag.

I'm sure the cross country 4x4 will perform better, but, how much?. Do you think is worth to pay those extra 250 € - 300 € for the Cross Country one vs the 4wdbits with scoop and fan?

[syche]

Hi Ecco,

Well, i have been in touch with CC for some time, but they can't put a date on when they would have some available. And they never not shiped outside australia up to now and don't have shipping company. I Have ask them several time, they are now looking at it. If you have more input, let me know. I am also intereted by their IC + a couple of other goodies. I would be interested by sea freight as a 4terrain clutch a beaudesert exhaust and the IC are not lightweight.

Air freight from australia, you have to expect about 150 Eu for 20kg..roughly

Now for the IC, honestly, but i might be wrong, i don't think we would see a difference between CC or 4wdbits as long as they are mounted on the same conditions.
My reason to try the CC one is..i just want to try it

Now i have ask 4wdbits to make bigger core for about a year, and last mail exchange, they found a core, and were going to start on that. But again, no ETA.

If you really want to pull hel power out of your engine, i won't go for any of this 2.
I would go front mount, all american import or water to air.

From experience, the IC, in fact help for lowering temp, and increasing a little the engine performances, but the bigest gain you would get is to get your IP tuned..and i mean really tuned.
I remember my kzj73, tuned 4 times..
the the 3 first time, i saw good improvement on torque and power, but lowered the milleage. The last change, it was just amazing, unbelievable, much more power than the previous upgrade, a torque that killed my new rear arms bushing in less than 20 000km and a better milleage than factory setting , all this just inside the pump.

Now a guy from this forum got a good guy to rebuilt and setup his pump, whitch was previously upgraded with a boost compensator and the trick most of us know.
But this workshop in south france, had argument about the way to set the IP and ...according our guy, he did it right, very right. The engine is running much smoother, seems more powerful, and less smoke with probably better milleage.

My plan, IC, Exhaust, cluth, and then a good workshop like this, for injectors and IP rebuilt and setup , there you will have the best as the IP and injectors will be setted up for your exhaust and intercooler. An EGT for this setup would be perfect to fine tune the fuel

[ecco123]

Thank you Syche.

What part of south France is that workshop?. I live in north Spain, so it may be worth for me to drop around there to let them tune my pump and turbo. It's hard to find knowledge people to tune these engines in Spain. What's the approximate price they would charge for a complete tuning?

I may be keeping the 4wdbits intercooler and investing the money in a proper tuning. I was going to order injectors from Cooma Diesel, in Australia, what I heard is one of the best places in the world to provide rebuilt injectors for the Land Cruiser, but it may be better to take it to this place you mention so they provide specific injectors for my setup?

It sounds really promising. Do you have contact data for these people? Do you think they speak some english or spanish?

[syche]

Hi Ecco,

https://my80isfantastic.com/viewto ... f=7&t=2828

Here is the thread where we talk about this

There is an other adress we talk about some month ago, but not much more info than his website:

http://hdjconcept.com/historique/index.html

The right way to go, install all your stuff, make it ready and bring your truck to a good IP shop, they will change your your lazy engine to a wild animal

[ecco123]

I saw the first link talking about this people ANTONI SA in Marseille. When lolo84 talks about 1800 € I assume that includes the pump rebuilt and injectors, doesn't it?.

The other guy, Jean Claude Chaux, from hdjconcept, looks like a very knowledge one. Do you know where is he located?

[syche]

Lolo got his pump rebuilt and replaced several internal parts, i don't have more details. But he did not rebuilt inhjectors for that amount, only, parts, rebuilt, tune and adjustment on the vehicule. For info this tunner consider "upgraded boost compensator" as jokes, and used the factory one, ith some argument you could read.

The other one, i need to call him, i do not know the exaact location