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Offline two up

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Re: intercooler
« Reply #25 on: March 22, 2018, 11:00:51 AM »
Quote from: IanS on March 22, 2018, 10:50:37 AM
If I understand the OP’s situation he is proposing fitting an intercooler to a naturally aspirated engine, the reason that it wont make any difference to performance is that in a turbo charged engine the act of compressing the air heats it up, it then goes through the intercooler to bring it back down closer to the ambient air temperature. In a naturally aspirated engine you are drawing in air at ambient air temp and passing it through an intercooler which has air at the same temperature as your intake air passing through it, therefore you are not going to get any cooling effect. I would suggest that you would probably degrade the performance of the motor because you would be causing a restriction in the airflow by the intercooler itself and the increase in length of the air intake plumbing.
A 1hdt motor is a Toyota factory turbo motor, so your previous comment is irrelevant. If the op intends to limit the boost to factory settings then a intercooler is probably not needed, but if he intends to up the boost and fueling then a intercooler is very desirable.


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Offline two up

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Re: intercooler
« Reply #26 on: March 22, 2018, 12:18:36 PM »
Quote from: duggie on March 21, 2018, 07:51:12 PM

Exhaust gas temps are only as good as your placement of probe , brand of gauge and brand of probe.


You can/could have 20 vehicles lined up and they will all give a different reading . Due to what I have stated above .

IMO - EGT's are only specific to your own set up / car .  Yep. don't deny that having a EGT gauge is handy , but you cant compare readings from other peoples setups .
Good quality gauge and probe with the probe tapped into the exhaust manifold will tell you what is going on with your vehicle, it's not about comparisons. It will also tell you if you are going in the right direction with any increase in boost or fuel. Not as necessary on a crd but on a old school highly recommended.

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Offline alnjan

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Re: intercooler
« Reply #27 on: March 22, 2018, 02:53:27 PM »
Quote from: IanS on March 22, 2018, 10:50:37 AM
If I understand the OP’s situation he is proposing fitting an intercooler to a naturally aspirated engine, the reason that it wont make any difference to performance is that in a turbo charged engine the act of compressing the air heats it up, it then goes through the intercooler to bring it back down closer to the ambient air temperature. In a naturally aspirated engine you are drawing in air at ambient air temp and passing it through an intercooler which has air at the same temperature as your intake air passing through it, therefore you are not going to get any cooling effect. I would suggest that you would probably degrade the performance of the motor because you would be causing a restriction in the airflow by the intercooler itself and the increase in length of the air intake plumbing.

The 1HDT that Kev has is the factory 4.2 turbo diesel 80 Series Landcruiser.  the one that came from the factory with a turbo fitted.   
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Offline Coolblue80

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Re: intercooler
« Reply #28 on: March 22, 2018, 03:45:18 PM »
Quote from: IanS on March 22, 2018, 10:50:37 AM
If I understand the OP’s situation he is proposing fitting an intercooler to a naturally aspirated engine, the reason that it wont make any difference to performance is that in a turbo charged engine the act of compressing the air heats it up, it then goes through the intercooler to bring it back down closer to the ambient air temperature. In a naturally aspirated engine you are drawing in air at ambient air temp and passing it through an intercooler which has air at the same temperature as your intake air passing through it, therefore you are not going to get any cooling effect. I would suggest that you would probably degrade the performance of the motor because you would be causing a restriction in the airflow by the intercooler itself and the increase in length of the air intake plumbing.
Reading his opening statement it appears his Cruiser is 1hdt powered which is factory turbo diesel.
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Offline woolgoolgaoffroad

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Re: intercooler
« Reply #29 on: March 22, 2018, 06:05:09 PM »
sorry all, just been away for the day...I was on the understanding that puttong an intercooler onto a TD would def help with colder air. But Ill do some indepth reading too so it might wise me up. Some good points bought up that I appreciate.

as alnjan - said its a factory TD........

How much boost are you running and what are your exhaust gas temperatures like. ...... just standard boost- was set when the pump got done several years ago. Not sure about the temps- cant imagine it being too extreme.

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Offline alnjan

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Re: intercooler
« Reply #30 on: March 22, 2018, 07:11:52 PM »
I think the main thing with after fitting the intercooler is to get a decent tune on the engine to get it running at optimum performance. 
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Offline woolgoolgaoffroad

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Re: intercooler
« Reply #31 on: March 22, 2018, 07:17:21 PM »
Quote from: alnjan on March 22, 2018, 07:11:52 PM
I think the main thing with after fitting the intercooler is to get a decent tune on the engine to get it running at optimum performance.

as optimal as 80's can get !!!

Thanks Al, hope all is well.
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Offline nab

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Re: intercooler
« Reply #32 on: March 22, 2018, 11:19:36 PM »
Quote from: IanS on March 22, 2018, 10:50:37 AM
proposing fitting an intercooler to a naturally aspirated engine

I missed that bit. In that case save ya money!!!
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Offline Rumpig

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Re: intercooler
« Reply #33 on: March 23, 2018, 05:37:42 AM »
Quote from: nab on March 22, 2018, 11:19:36 PM
I missed that bit. In that case save ya money!!!
and you have missed the part where it was explained the T in 1HDT stands for turbo.
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Offline woolgoolgaoffroad

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Re: intercooler
« Reply #34 on: March 23, 2018, 07:16:50 AM »
Quote from: Rumpig on March 23, 2018, 05:37:42 AM
and you have missed the part where it was explained the T in 1HDT stands for turbo.
yeeeeep......little things get missed and people assume or just don't read
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Offline Cruiser 105Tvan

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Re: intercooler
« Reply #35 on: March 23, 2018, 10:10:42 AM »
The 1H series of motors had two different blocks.
The one for the 1HZ indirectly injected N/A Diesel.
And the one for the 1HDT, a Direct injected Turbo, 12 valve motor with heavier casting and internals.
Despite this people still want to Turbo the lightweight engine.
Safari built an intercooler that was mounted in front, behind the Grille.  This can cause overheating problems in some circumstances.
Cross Country (I think) make a top mount one that's fitted with a fan for assisting with cooling.
PWR could also have a similar top mount cooler as well as HPD in Adelaide.  Top mounts need an opening in the bonnet or ducting for air flow.
It would depend on whether you wanted reliability, or you were chasing Tons of Newts and Killing Watts from your beast.
As others have said, It's a lot of money to spend, and you may get no perceived return.
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Offline two up

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Re: intercooler
« Reply #36 on: March 23, 2018, 10:47:44 AM »
All I am seeing in this thread is opinions from people who don't really understand the purpose of intercooling an engine bar 1 or 2 contributors.

To the original poster, what is you aim in doing this modification?



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Offline RebsWA

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Re: intercooler
« Reply #37 on: March 23, 2018, 10:54:26 AM »
two up, read the 6th post from the top.
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Offline vern

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Re: intercooler
« Reply #38 on: March 23, 2018, 11:05:51 AM »
Yes an intercooler works if you are planning on upping the boost and fuel.
My scenario is isuzu 4bd1t in a rangie, had a top mount air to air, egts were up around 730°c, boost at 30psi, injector pump turned up somewhat.

Now it sports a Plazmaman 800hp water to air, same boost, maximum fuelling from the pump (any more will require bigger plungers), and egts around 650°C now.

So they do work, you just have to work on budget and what fits

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« Last Edit: March 23, 2018, 11:11:17 AM by vern »
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Offline two up

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Re: intercooler
« Reply #39 on: March 23, 2018, 11:09:52 AM »
Quote from: RebsWA on March 23, 2018, 10:54:26 AM
two up, read the 6th post from the top.
Fairly vague statement, cooler air for a little more power. Cool air doesn't make power, adding more fuel does, which requires more air which means more boost therefore more heat and a greater requirement for cooling.

Again what is the op trying to achieve.

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Offline two up

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Re: intercooler
« Reply #40 on: March 23, 2018, 11:15:35 AM »
Quote from: vern on March 23, 2018, 11:05:51 AM
Yes an intercooler works if you are planning on upping the boost and fuel.
My scenario is isuzu 4bd1t in a rangie, had a top mount air to air, egts were up around 730°c, boost at 30psi, injector pump turned up somewhat.

Now it sports a Plazmaman 800hp water to air, same boost, maximum fuelling from the pump (any more will require bigger plungers), and egts around 650°C now.

So they do work, you just have to work on budget and what fits

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I don't think he is going that extreme, but it sounds like you have got that singing.

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Offline RebsWA

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Re: intercooler
« Reply #41 on: March 23, 2018, 11:16:19 AM »
Quote from: two up on March 23, 2018, 11:09:52 AM
Fairly vague statement, cooler air for a little more power. Cool air doesn't make power, adding more fuel does, which requires more air which means more boost therefore more heat and a greater requirement for cooling.

Again what is the op trying to achieve.

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More power! I think the OP's question has been answered based on his response.
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Offline two up

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Re: intercooler
« Reply #42 on: March 23, 2018, 11:47:03 AM »
Quote from: RebsWA on March 23, 2018, 11:16:19 AM
More power! I think the OP's question has been answered based on his response.
No it hasn't, depending on how much more he means he may get a completely different answer.

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Offline RebsWA

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Re: intercooler
« Reply #43 on: March 23, 2018, 11:57:51 AM »
Quote from: two up on March 23, 2018, 11:47:03 AM
No it hasn't, depending on how much more he means he may get a completely different answer.

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 ???  I reckon you need to read the whole thread again.   :D
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Offline two up

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Re: intercooler
« Reply #44 on: March 23, 2018, 12:33:39 PM »
Have read the whole thread numerous times, as opposed to others. Without knowing what his setup is currently doing it's hard to give advice. He has previously said that he would like a little bit more power and cooler air, he has upgraded the fuel pump injectors and fitted a 3" exhaust and it has been tuned. What boost is it currently running, if the turbo is now close to its limits more power may mean a better turbo, does he have issues with his afr's etc etc. My advice before he does anything else would be to fit a boost and egt gauge. Find out what is currently going on and make informed decisions from there.

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Offline vern

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Re: intercooler
« Reply #45 on: March 23, 2018, 03:19:33 PM »
Quote from: two up on March 23, 2018, 12:33:39 PM
Have read the whole thread numerous times, as opposed to others. Without knowing what his setup is currently doing it's hard to give advice. He has previously said that he would like a little bit more power and cooler air, he has upgraded the fuel pump injectors and fitted a 3" exhaust and it has been tuned. What boost is it currently running, if the turbo is now close to its limits more power may mean a better turbo, does he have issues with his afr's etc etc. My advice before he does anything else would be to fit a boost and egt gauge. Find out what is currently going on and make informed decisions from there.

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Bingo!

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Offline RebsWA

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Re: intercooler
« Reply #46 on: March 23, 2018, 05:11:11 PM »
Quote from: two up on March 23, 2018, 12:33:39 PM
Have read the whole thread numerous times, as opposed to others. Without knowing what his setup is currently doing it's hard to give advice. He has previously said that he would like a little bit more power and (thinks) (cooler air) will do that, he has upgraded (reconditioned?) the fuel pump (and) injectors and fitted a 3" exhaust (done the exhaust) and it has been tuned. What boost is it currently running, (stock probably) if the turbo is now close to its limits more power may mean a better turbo, does he have issues with his afr's (not mentioned) etc etc. My advice before he does anything else would be to fit a boost and egt gauge. (stock engine? not needed - more expense) Find out what is currently going on and make informed decisions from there.

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With respect to the OP, the above in red type is my english comprehension of the thread. With no reply to a question about upgraded injectors as opposed to reconned injectors I reasonably assume the engine is stock apart from the exhaust and snorkle. That's why I suggest he not bother with an intercooler. If there are more mods than the OP has posted then I give up trying to be helpful. I also doubt the OP would be really interested in throwing money at power mods to a 80 series 1HDT that probably has accumulated a few kms by now. But I have been wrong before.  ;D

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Offline vern

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Re: intercooler
« Reply #47 on: March 23, 2018, 05:42:18 PM »
Quote from: RebsWA on March 23, 2018, 05:11:11 PM
With respect to the OP, the above in red type is my english comprehension of the thread. With no reply to a question about upgraded injectors as opposed to reconned injectors I reasonably assume the engine is stock apart from the exhaust and snorkle. That's why I suggest he not bother with an intercooler. If there are more mods than the OP has posted then I give up trying to be helpful. I also doubt the OP would be really interested in throwing money at power mods to a 80 series 1HDT that probably has accumulated a few kms by now. But I have been wrong before.  ;D
Does it matter if the engine is stock? Injectors stock? Turbo stock?
Mines all stock, my afrs are 22:1, boost 30psi, fuel maxed, egts around 650°c pre turbo. Intercooler is definitely needed in my case. But mine isn't a 1hdt, so there could be the difference

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Offline duggie

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Re: intercooler
« Reply #48 on: March 23, 2018, 06:50:23 PM »
Quote from: two up on March 23, 2018, 12:33:39 PM
My advice before he does anything else would be to fit a boost and egt gauge. Find out what is currently going on and make informed decisions from there.

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Not going to disagree with this statement , but I have EGT and Boost gauges and I very very rarely even take a peek at either .

It is not rocket science, cooler intake air will equate to a increase in power. Early cool morning pulling up incline compared to midday in summer pulling up the same incline, the vehicle will work a lot harder on the hot day .

Another advantage with having a intercooler , if/when the factory turbo blows , the components wont make it into the intake/valves .


I have seen several Toyota 1hdt engines have turbo failures with a fair bit of damage done to the intake/head due to no intercooler to collect the shrapnel.
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Offline woolgoolgaoffroad

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Re: intercooler
« Reply #49 on: March 23, 2018, 07:08:04 PM »
thanks all for your advice. Will take some on board and the rest forget. Thanks all.
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