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Thread: Another intercooler question

  1. #1
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    Another intercooler question

    I've been gradually working at improving the performance on my 2002 Td5 since I got it about 18 months ago. I started by removing the EGR, cat and centre silencer which in themselves produced a notable improvement. I then went on to fit a ceramic coated inlet and exhaust manifold (using Würth studs & nuts) with a ceramic coated turbo housing and a hybrid turbo cartridge which gave a further improvement. I'm now considering a remap but, before doing this, I want to fit a bigger intercooler. The engine is EU3 and so already has the bigger LR standard intercooler.

    I've read just about every thread on intercoolers but I can't find an answer to my specific question. If I'm going to fit a bigger intercooler I might as well fit the biggest possible so I'm looking at the one that fits a UK manual vehicle, i.e. with no gearbox oil cooler. My own car is a manual but, being Oz spec, it has the transmission cooler. What I'm trying to find out is how difficult it is to reposition the trans cooler and what parts are needed to do it. There is a reference in one of Muppet's posts to a couple of members who have done this but I can't find anything else.

    Any guidance that that anyone can provide will be much appreciated.

    Lawrence

  2. #2
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    Another intercooler question

    When I did this, I replaced the LR oil cooler with an Aeroflow oil cooler mounted in front of the radiator. Very easy to extend the existing hoses - I just cut the existing hose line and used hose barbs to join some additional transmission oil hose. You will find space to feed the hose through to the front.

  3. #3
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    Quote Originally Posted by DiscoDB View Post
    When I did this, I replaced the LR oil cooler with an Aeroflow oil cooler mounted in front of the radiator. Very easy to extend the existing hoses - I just cut the existing hose line and used hose barbs to join some additional transmission oil hose. You will find space to feed the hose through to the front.
    Thanks for this pointer. I need to pull the front end off and take a look at where everything sits. RAVE diagram is fine but until I look at it in place it probably won't make much sense.

  4. #4
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    Quote Originally Posted by Metoikos13 View Post
    Thanks for this pointer. I need to pull the front end off and take a look at where everything sits. RAVE diagram is fine but until I look at it in place it probably won't make much sense.
    Just pull the front grille off. Plenty of access at the front to see where to mount the new oil cooler.

    I made up a cardboard mock up for the new oil cooler before I bought it to work out the best size and fitting location. You will want an oil cooler with a larger surface area than the original. I ended up mounting it down low and at an angle to get the airflow from below the front bumper cross member.

    Getting the old IC out is a bit tricky. Plus if I recall correctly you will have to cut off the old oil cooler mounts as well to fit the new IC.

  5. #5
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    Thanks again. Something to keep me busy on a wet weekend! I'll report back when I eventually do the job, possibly with a few photos.

    Lawrence

  6. #6
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    And the obvious question I forgot to ask: Was the difference it made worth the effort?

  7. #7
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    I would say a definite yes. I recall bottom end performance was much stronger, and of course a remap will definitely benefit from the larger IC.

  8. #8
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    And the obvious question I forgot to ask: Was the difference it made worth the effort?
    I don't think it would make much difference on a stock map.

    The reason for the intercooler is to lower intake air temperature and subsequently to lower EGTs.
    This becomes more important as any map will increase EGTs greatly.
    The intercooler and cat delete are to keep EGTs at reasonable levels under load like climbing a hill while towing where even with my Serck cooler I can easily exceed 750C without driving by the EGT gauge. An Increase in boost will also reduce EGTs .
    A byproduct is that it helps acceleration.
    Regards PhilipA

  9. #9
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    You might also consider fitting a water cooled oil cooler of the style that LR has fitted to all later vehicles. The coolers don't occupy much space, don't require airflow but would need to be plumbed into the cooling system appropriately.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
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  10. #10
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    I should mention, I noticed the improved drive-ability even without a remap. But it could have been the placebo effect.

    Given you are planning a remap having the large IC will give you options to be more aggressive on the remap. Just remember the gearbox is only rated for 380Nm.

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