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Thread: intercooler td5

  1. #1
    130 defer Guest

    intercooler td5

    hi my defender has a large intercooler fitted to it ,core size is 75x300x500, is this to big as on the intake side its cold to touch , turbo side to hot to touch.so its working very well,but can they over cool regs tony

  2. #2
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    hell no.. Ideally you want the air coming out of the intercooler to be of such a temp that If you put your beer on it the can would frost.

    Rice dragsters have a new type of intercooler, Air:dry ice.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  3. #3
    130 defer Guest
    Quote Originally Posted by Blknight.aus View Post
    hell no.. Ideally you want the air coming out of the intercooler to be of such a temp that If you put your beer on it the can would frost.

    Rice dragsters have a new type of intercooler, Air:dry ice.
    thanks dave for the reply,will it run lean like a petrol,i was worried about internal damage thanks tony

  4. #4
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    It certainly will run lean but thats part of how diesels achive their control...

    the evolution of diesos w turbos then intercoolers

    a Naturally aspirated diesel always breaths the same amount of air (no butterfly in the inlet to restrict the airflow, usualy) per turn of the crank (ignoring minor changes due to flow effeciency and the like) and speed/power control is achieved by changing the amount of fuel you put in. less fuel in the same amount of air= a lean mix and less power too much fuel and your running rich and thats when diesels start to get into trouble.


    now given that your air fuel mix is defined as the number of parts of air to the number of parts of fuel, by weight (actually by particals) some smartie worked out that if you force more air into the chamber you can put more fuel in and get more power out... so enter the turbo charger.

    now the turbo works off of waste gasses and they(the gasses) get hot (more power = more heat) so the turbo gets hot and transfers some of that heat into the air thats going to be compressed and burnt, add to that that the process of compressing air also makes it hot someone took a look at a hot air ballon and went...

    Haaannng on if hot air floats on cold air its less dense.. denser air has more air in the same area.... If I put cooled compressed air into the cylinder I can add EVEN more fuel and get even MORE power out of the engine.

    and the concept of aftercooling came about...


    And all of this came about because some bloke worked out that the race cars went faster early in the morning cause the air was cooler and denser, if your getting more air in the cylinder you coud get more power out....
    Last edited by Blknight.aus; 10th October 2007 at 10:21 PM.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  5. #5
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    Now I understand a comment you made many moons ago Dave - you would not chip big red unless you also fitted a bigger intercooler.

    Thanks for that info - very informative.
    http://i271.photobucket.com/albums/j...KevsAvatar.jpg
    Defender '06 - (+ Tombie's Magic)
    Gone but not forgotten
    Defender 03 (Rolled)
    '99 TDI Discovery
    '96 V8 Discovery
    '86 V8 County (Life's regret selling this)
    Series III

  6. #6
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    Dave, you should write a book , Diesels for dummies, hell I would buy it as I like your style sense of humor and easy to understand, readable..

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