R16 engine oil temperatures
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Thread: R16 engine oil temperatures

  1. #1
    Member 21571's Avatar
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    Default R16 engine oil temperatures

    Hi guys, can anyone tell me the maximum oil temperatures I should safely see in an R16 engine?
    I'm contemplating putting an oil cooler back on my A310-4, they came from the factory with one but it's disappeared over 40 years at some stage.
    I've worked out which bits from eBay that Brett has fitted to his R8 and he's happy with them.
    Wondering if a themo fan should also go on, and at what temperature it should kick in.
    Cheers.

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    Fellow Frogger! Shoji's Avatar
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    I just fitted a thermo fan to my R17. (similar 4 cylinder engine) I used a Tridon TFS100 temp switch 80-90 in the radiator. About $65 from Covs Working well but there's others. Don't forget the relay.
    Tridon TFS100 Fan Switch


    • Spanner: 29mm
    • Thread: M22 x 1.5
    • Terminals: 2
    • Circuit: Normally Open
    • Operating Temp: 90°C - 80°C
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    “Listen very carefully, I shall say this only once.” Cheers. John

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    The water radiator has thermo fans, well 3 of them actually in a row along the rad at the front.. They're R16 interior heater fans repurposed, stock from the factory.
    I think as a whole the engine does not have enough cooling and the oil cooler would help.
    Ideally I'd get the front rad re-made in aluminium rather than the copper that it is.

    Sent from my LT29i using aussiefrogs mobile app

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    1000+ Posts driven's Avatar
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    Copper actually has better heat transfer than aluminium. Car makers went to aluminium as it is cheaper

    https://www.hotrodhotline.com/md/htm..._vs_copper.php

    Keep your oil temp above 100deg C to boil off any water vapour in the air the engine sucks in each night as it cools

    Modern engine oils will run up to 170deg C. This is HOT

    What Is The Optimum Engine Oil Temperature? - Hot Rod Network

    Check your oil temp first before spending money on a cooler.

    Easy check for temp. If you can hold it, it is below 70deg C
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    Fellow Frogger! Shoji's Avatar
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    I may have missed the point. Your talking about a thermo fan for the oil cooler?
    “Listen very carefully, I shall say this only once.” Cheers. John

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    1000+ Posts alan moore's Avatar
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    On the track I have seen 135 degrees C, and would much prefer it at 110, although the synthetic oils now available may well accomodate the 135. In most everyday driving the oil temp is only maybe 5 degrees over water temp.

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    Interesting reading, thanks Driven.
    I have no idea how accurate my 44 year old gauges are.
    So if an thermostat controlled fan were to go on, it should kick in only over 100C, probably 110C. The oil will easily take that temp and allow it to get hot enough to evaporate any water in it and in the sump.

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