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Thread: TD42 - All Variants Aussie Water Thermostats

  1. #121
    Expert Cremulator's Avatar
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    I replaced my factory 76.5c thermostat with the 82c unit from Nissan.
    I drained about 2L of coolant from the bottom of the radiator and that was enough to clear the thermostat housing.

    On removal of the old 76.5 it appeared to be damaged.
    The bottom looked bent and there was a scuff/indent on the base.

    I'm not sure if it was having an effect on the temperatures.
    Here it is in February this year on a day that was about 30c, stationary, and it was sitting around 72c.

    Old thermostat.

    New one.

    I'll see how the new 82c one goes over summer as the weather warms up here in Vic.

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    MB (13th October 2020), mudski (12th October 2020)

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  4. #122
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    TD42 - All Variants Aussie Water Thermostats

    Great to see you’re having a mythbusting crack too Crem Mate!
    Really keen to hear your fuel economy picks up by some hopeful near 10% too running hotter they seem to love found too Brother


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    Cremulator (13th October 2020)

  6. #123
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    Yeh I'll be very interested to see how the fuel economy goes. I've just filled the tank too, so this will be good timing.

    Interestingly I drove it today, unloaded, no passengers, almost no incline in the terrain and it got to 77c pretty easily.
    Short trip, but I'll test it more over the next few weeks.

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    MB (13th October 2020)

  8. #124
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    Something aint right there Crem Mate!
    Too short of a trip agreed, leave it in your driveway for 20-30 say minutes idling and in theory it should hover as naturally close to installed 82C as planned?
    Upon takeoff driving your accurate Redarc should see a spike higher until she opens a wee bit more before dropping to stabilise there on a few degrees higher hopefully
    I LIKEY 92C average in our TD42’s :-)


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    Cremulator (14th October 2020)

  10. #125
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    I did have to shut it off before I was able to test of the temp got any higher as I arrived and couldn't let it idle, but I will certainly test that recommendation and see what it does @MB

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  12. #126
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    Here is an update of my experience in switching from a factory 76.5 thermostat to a 82 thermostat on my 2004 GU III TD42ti.
    I've been logging the fuel consumption and keeping an eye on the operating/peak temperatures.
    This is the last four full tanks of fuel before and after I changed thermostat:

    With factory 76.5 thermostat
    2020/03/05 – L/100km: 14.27 trip: 562km

    2020/03/19 – L/100km: 13.54 trip: 618km

    2020/05/27 – L/100km: 13.81 trip: 571km

    2020/07/11 – L/100km: 13.16 trip: 608km

    — 589.75km average

    Installed 82 thermostat 15th Oct 2020
    2020/10/06 – L/100km: 13.59 trip: 568km

    2020/12/23 – L/100km: 13.74 trip: 536km

    2021/01/22 – L/100km: 12.87 trip: 621km

    2021/03/01 – L/100km: 12.69 trip: 648km

    — 593.25km average

    These have been general use around town as well as some trips away, but nothing more than 4 passengers and belongings without a roof rack.
    So relatively light load on the vehicle.

    Here are some temperature photos of the water temp and ambient temp with the 76.5 thermostat.

    And the same once I switched to the 82 thermostat with a similar ambient temperature.
    Last edited by Cremulator; 16th April 2021 at 10:29 PM.

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  14. #127
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    Job well done Ash Mate, Together we’ll all solve this 76.5 TC Tropicalals
    Victorian winter approaching, bang in a UK/Russian OEM 88C and watch your clean system temps fluctuate stable between 88-96C with 92C average saving you almost 50km per OEM tank fill


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  15. #128
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    I am very tempted to do just that @MB.
    Next on the cards is EGR block as I have that piece waiting.
    I'll have to order a 88 thermostat from Nissan

  16. #129
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    One step/reduction at a time ASH Mate!
    Please don’t bastardise your GU Faithful Beauty


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    Cremulator (18th April 2021)

  18. #130
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    So you are saying don't do too much in one hit as that will basterdise it, or doing certain things will basterdise it?

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