Barbados

Barbados

Active Member
What the giddy dickens diddly poo were they thinking.

They have the intake coming in smartly...in a way, to a big high volume metal air box, which is then plumbed to the compressor intake....all well and good.

The smarty pants then sends the warmer compressed air through a metal pipe right next to the engine warming up the air a bit more, then through an intercoler located next to a hot radiator which is now heating up the air, finally through another pipe next to the engine heating up the charge air even more then into the engine steaming hot. :rolleyes:

Looking at this design, I think plumbing the air straight from a snorkel to the turbo compressor then straight into the engine will send cooler air in than this heat exchanger system it has.

I have already routed out a whole different layout to actually get cooler air into the engine...just have to import a box of stuff since I left all my turbo stuff in Canada. Can't get jack diddly squat here unless you own a private jet.
 
maybe if cars stood but not if your moving with air passing through coolerslower moving vehicles often use coolant system cooled intercooler
 
James that's another thing. The mechanical fan is trying to blow air against the cooler wind coming in. I will remove the mechanical fan and install two extractors behind a new rad and intercooler.

Having the cooler air blowing in and then accelerating that using extractors will cool the rad and ic way more efficiently and reduce some load with the mechanical fan delete.

BTW James, would you know the operating temps of the 200tdi? Have to rig up a housing for a thermo switch. Do they also make a lower opening temp thermo? BMW has about five to choose from.
 
fan sucks air in through rad and cooler not the other way ,88 degrees is std thermostat but you could fit etc4761 74 degrees thermostat
 
Don't think of the system in terms of a hot engine bay - with this lovely cool intake air gaining heat from the hot engine bay - think of it in terms of a vehicle moving forward, with cooling air flowing through the intercooler at the front of the engine bay, and the compressed air from the turbo being really hot.

The intercooler has massively more surface area to cool the charge air than the pipes to and from it.

Also, this "warmer compressed air" from the compressor, when under full load will be hotter then the engine bay air, so it will actually be losing heat into the engine bay, not soaking heat from it.

By all means, take out the intercooler, but I think you will find you lose a lot of power and economy -if landrover could have got away without the expense of fitting one, believe me - they would have.

These engines are all about the turbo boost- and keeping the charge air cool.

Before you remove the intercooler, put some thermocouples on either side of the intercooler, and see what the temp differential is, and what a difference it makes to the charge temperature.

Or at least feel how hot the pipe from the turbo to the intercooler feels after a hard run.
 
Really? Thought these were pushing forward? I remember the older BMC vehicles did. Either way, I will run electric cooling and a lower thermo, 74 degrees sounds cool, literally :D

Thanks for the info James, have to run out now for dinner.

Cheers and thanks for sharing your knowledge.....as usual.
 
captainbeaky said:
Don't think of the system in terms of a hot engine bay - with this lovely cool intake air gaining heat from the hot engine bay - think of it in terms of a vehicle moving forward, with cooling air flowing through the intercooler at the front of the engine bay, and the compressed air from the turbo being really hot.

The intercooler has massively more surface area to cool the charge air than the pipes to and from it.

Also, this "warmer compressed air" from the compressor, when under full load will be hotter then the engine bay air, so it will actually be losing heat into the engine bay, not soaking heat from it.

By all means, take out the intercooler, but I think you will find you lose a lot of power and economy -if landrover could have got away without the expense of fitting one, believe me - they would have.

These engines are all about the turbo boost- and keeping the charge air cool.

Before you remove the intercooler, put some thermocouples on either side of the intercooler, and see what the temp differential is, and what a difference it makes to the charge temperature.

Or at least feel how hot the pipe from the turbo to the intercooler feels after a hard run.
Click to expand...

I am not removing the intercooler, I was being sarcastic.

BTW I was the owner of a European Car Performance and turbo shop for many years until last year when I moved here. :D
 
Surely running a cooler stat will make the diesel engine less efficient?
But being a tuner you would know that eh!
Ps thats defo sarcasm:D
 
lee3022 said:
I doubt it will make much difference in performance either way
Click to expand...

It won't make a difference directly, it was about keeping the engines cool here. With the average temperature here being so high year round and with the humidity high too the older engines suffers from overheating. I looked at my rad yesterday and it's like biscuit, so the they need some tlc too.

By reducing engine room heat however, the intercooler might be cooled a bit more so the charge air can be more dense making the engine run a bit more powerful and efficiently.

The engines running an emission controlled lop back system, will run inefficiently if over cooled. They have an operating temperature to which they must maintain in order to run clean. Over cooled engines can also induce faster wear especially if a thicker single grade oil viscosity is used.
 
I had the same problem, even got hot going up hills in my 200, replaced the rad and have taken the fan off completely as it's no longer needed.
On a 500 mile trip the water in the header tank was warm not hot so very happy now.
 
lee3022 said:
I had the same problem, even got hot going up hills in my 200, replaced the rad and have taken the fan off completely as it's no longer needed.
On a 500 mile trip the water in the header tank was warm not hot so very happy now.
Click to expand...

You are running with no fan at all?:eek: can't see how your engine will be cooled without a fan.
 
They don't need one, better mpg too.
System is over engineered for all environments and in the uk it just doesn't need it, took it off 2 years ago and even on a hot day through traffic it's fine
 
I don't have a fan on my 200tdi defender , fine in everyday driving but is now getting warm after a few hours offroad although I suspect that's to a different problem as its only recent
 
I removed the viscous fan on my TD5 replaced it with a Kenlow unit it has never switched on what a waste of money so far. OK so if/when we get that supper hot day maybe I will change my mind.:D
 
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