Toyota Land Cruiser 80 Series 1989-1998

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FarmBoy (FarmBoy) 2016-03-10 15:35:25 +0500 #121

qwertypoiu;2964997:

Intercoolers

The factory turbo diesels (1HD-T and 1HD-FT) respond well to a well engineered intercooler. On the 1HD-FT for example, an intercooler and better exhaust may increase power from 125KW to over 160KW and torque from 380Nm to over 470Nm (See also our dyno runs during a visit to Safari 4x4).

The idea behind an intercooler is to take the intake air which has been heated through the pressurization process of the turbocharger and cool it before it enters the inlet manifold.

Cooling is achieved via an additional radiator. Hot air from the turbocharger is routed through the radiator and then passed back to the inlet manifold resulting in a significant drop in inlet charge temperature. With high ambient temperatures, it is not uncommon to see inlet temperatures above 100 deg C. A well designed intercooler will drop this temperature to 50 - 60 deg C. The added benefit is less thermal stress on the motor.

As air is cooled however, the pressure drops proportionately (PV=nRT). As a consequence, the total boost upstream of the intercooler needs to be lifted by adjusting the turbo waste gate. The idea is to achieve similar to stock boost at the inlet manifold. If this isn't attended to, the boost compensator will sense a lower boost and not inject enough fuel to take advantage of the additional air available for combustion.

Exhaust is another area which will give a performance and driveability boost. A larger diameter exhaust (strictly speaking, free flowing exhaust with less back pressure) will create a greater pressure gradient across the exhaust side of the turbo, resulting in the capacity to spin up faster. This results in lower turbo lag and its benefit is clearly evident around town. There may however be exhaust noise issues with a free flowing exhaust.

There are a number of intercooler kits available for 80s with undoubtedly the best engineered kit from Safari 4x4. These guys have created an intercooler kit which is as close as possible to that which would come from the factory (if Toyota ever made one). Quality cast alloy components and kevlar tubing give maximum reliability and longevity. I have seen a number of other kits which do not make the grade and rely on off the shelf tubing and very little in the way of dedicated components. Safari also make a 3 inch exhaust to compliment the intercooler installation.

There is a good degree of interest in intercoolers amongst us in 80 Series Cruiser Owners OnLine and we're eagerly awaiting more of us to take the plunge. The Safari kit is not an inexpensive option and this fact alone has swung a few of our city dwelling members to opt for a less expensive option.

Salam,

Where in Pakistan could one get an intercooler for a 97 LC 80, with 1HD-T?

Wassalam

FarmBoy (FarmBoy) 2016-03-10 15:37:01 +0500 #122

Salam,
Any place in Rawalpindi/ISB/Peshawar or Lahore?
Wassalam

FarmBoy (FarmBoy) 2016-03-10 15:52:16 +0500 #123

Salam,

Instead of starting a new thread, thought of posting here to make give life to this thread as well

I have a 97 LC with 1HD-T (12 valve) and manual 5 speed gearbox. Is it possible to install the (2003+) 100 series 5 speed automatic transmission?

Wassalam

qwertypoiu (qwertypoiu) 2016-03-10 16:42:48 +0500 #124

No it is not possible. the 5speed auto has its on Ecu to run and it is very hard to configure it, i havent seen anyone do a swap like that.
since you are saying your 80 series is 97 model 5 speed manual is it All time 4x4 or part time NEW dash board as known as the one which multi valves have ?

FarmBoy (FarmBoy) 2016-03-10 17:37:15 +0500 #125

Its not a full time 4x4. It has the 4H button. Manual hub locks, dual ac, dual fuel tank.

FarmBoy (FarmBoy) 2016-03-10 17:41:05 +0500 #126

The dashboard is I guess new as it is different than that of 95 and 96 LCs.

Ranger_ofthe_North (Ranger_ofthe_North) 2016-04-03 11:41:39 +0500 #127

Hello.
I am also looking at the prospect of improving the performance of my 95 Cruiser, running 1HD FT, with manual transmission. Qwertypoiu have you considered fitting, or has anyone fitted a 100 series intercooler to an 80 series? I think the piping bit is not difficult, and infront of the radiator, the space does not look too different on the two.......
One thing that I am worried about is removing the heater? That may be an issue for cold starts, as I live in Abbottabad. Any info on that?
And the 3 inches exhaust, free-flowing. I think it may cause a problem on the motorway, say on the 120+ km/hour cruise speed..... Any experiences?
Secondly, could you guide me to someone in the twin cities who is working on these? or on performance cars, who could fit the thing up for me?

Thanks a lot

Ranger_ofthe_North (Ranger_ofthe_North) 2016-04-03 11:46:24 +0500 #128

I am also considering a bigger, better Turbo, say something like the Garrett GT 2871 R, or something similar. But I am unable to source it and am unable to get the info on the fitting and performance issues.
I don't want to spoil the longevity and reliability of the Cruiser, as it it my daily grocery-getter. Secondly, I am not sure if a more than 20& power increase will be handled well in pure off-roading? So, am +/- on that one.
Will, hopefully be fitting a manual tubo boost actuator, to increase the boost. Am looking at something like an improvement of 3 - 5 PSI. Don't know if this much will cause any damage or not? Hopefully not.
Input requested, pl

qwertypoiu (qwertypoiu) 2016-04-03 19:43:06 +0500 #129

I am not well versed on the subject let me direct someone who knows this stuff here.

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Ranger_ofthe_North (Ranger_ofthe_North) 2016-04-03 22:55:12 +0500 #130

Yep. Thanks.
Could you possibly tell him to pm me? I have put on an alert on my cell phone about messages on this forum, but I am always worried that I could miss something. Therefore a personal message will be a great help.
Thanks a lot.

Sheryar (Lucifer) 2016-08-25 05:29:31 +0500 #131

nice thread..

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