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Thread: auto tranny help

  1. #1
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    auto tranny help

    I have a 93 disco v8i, and need to know what psi the auto transmission oil cooler works at as i want to put an after market unit in place of the hedgehod cooler. and most of the aftermarket units are tested to 150psi. would the disco be higher than this.

  2. #2
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    possibly your best bet would be to get one from a P38 RR they are the radiator type much bigger and will fit, new hoses are required as the fittings are a bit different apparently

  3. #3
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    If your wiling to wait a while I can tell you what pressure they actually run at.
    I had to move my auto cooler when I fitted a winch, and when I redone the hoses I fitted a temp guage and made provision for a pressure test point. Just gotta snavel the digital pressure gauge from work one weekend. It will record and store the highest pressure.

  4. #4
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    I have a PWR cooler with 1/2" barbs, and have silver soldered barbs on the other hard lines and use blue silicone hydraulic hoses from Enzed, secured with basic hose clamps - no pressure issues or leaks for the past few years,

  5. #5
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    I was advised pressures can be up to 200psi during lockup.
    See this thread for tips from others.
    http://www.aulro.com/afvb/discovery-...-cooler-2.html
    Cheers
    Mark

  6. #6
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    Quote Originally Posted by Spel1 View Post
    I have a PWR cooler with 1/2" barbs, and have silver soldered barbs on the other hard lines and use blue silicone hydraulic hoses from Enzed, secured with basic hose clamps - no pressure issues or leaks for the past few years,
    does you auto run through the radiator before going into the PWR cooler? the reason i am asking is mine does not go through the radiator before the cooler. it just comes straight from the auto to the hedgehog and back to auto box.

  7. #7
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    Quote Originally Posted by bealzabab View Post
    does you auto run through the radiator before going into the PWR cooler? the reason i am asking is mine does not go through the radiator before the cooler. it just comes straight from the auto to the hedgehog and back to auto box.
    No, the cooler in the radiator is for engine oil, with conncetions on the right side of the radiator. The auto trans cooler is separate. I know there are a couple of others on this site who have a similar setup to me.

  8. #8
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    Quote Originally Posted by Spel1 View Post
    No, the cooler in the radiator is for engine oil, with conncetions on the right side of the radiator. The auto trans cooler is separate. I know there are a couple of others on this site who have a similar setup to me.
    fair enough thanks mate. i know when they did the update on the disco 1 they ran auto cooler through the radiator than into the hegdehog. will get onto PWR and order one through them.

  9. #9
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    Or you could look at this.
    Automatic Transmission OIL Cooler H Duty 1 2 " Barbs | eBay
    When I spoke to PWR, they weren't fussed whether I bought from them or this ebay seller - apparently this vendor is one of their retailers.

    Either way, this is the product I bought. As mentioned, with all new lines from Enzed.

    With the metal lines on the vehicle, I bought also from Enzed some basic 1/2" brass barb fittings with an ID at the other end less than those of the metal lines. Then I drilled out the ID of the brass barb fitting to be a snug fit over the cut metal vehicle line, cleaned it up then silver soldered into place. All works nice with no leaks. If you ar a bit handy, you can buy a can type blowtorch from your local tool shop, and the right size drill bit and do it all yourself for not much. And, the lines are replaceble, not that I have yet as the blue hydraulic pipes still look like new.

  10. #10
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    Quote Originally Posted by Discomark View Post
    I was advised pressures can be up to 200psi during lockup.
    See this thread for tips from others.
    http://www.aulro.com/afvb/discovery-...-cooler-2.html
    Cheers
    Mark
    land rover finally got back to me on the pressure. not much help though. they advised me at 2000rpm the oil pressure is 150psi. so definately need better than that. lol

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