Combo gauge with rpm, oil temp and oil pressure

Discussion in 'Mech Tech' started by grunde.engan, Feb 11, 2020.

  1. Looking for gauge with rpm, oil temp and oil pressure in one unit to replace the clock in 1978 transporter.
    Anyone done something similar?

    I have not found the right gauge. Most of them are individual rpm, temp or pressure.
  2. davidoft

    davidoft Sponsor

  3. I'd be interested one of those, if they exist.
  4. I have a marine gauge with oil temp, pressure, fuel and volts. It took some frigging to get it working as it’s US spec so senders need matching.
    I haven’t seen a multi gauge with a tacho though.

    Sent from my iPhone using Tapatalk
  5. I found almost right, but not with my "specs":
    0020127_tetra-series-black-combination-gauge_300.png s689572963557007764_p1237_i1_w500.jpeg
    Gingerbus likes this.
  6. Good research.
    One thing to note with the temp gauge - it tops out at more or less where our aircooled oil temp sits most of the time on a motorway. My multi gauge is the same - 250F (120c). You won’t want it to go higher than that. It’s an indicator anyway.

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    Last edited: Feb 11, 2020
  7. Might as well include CHT as well ! :rolleyes:
  8. Its a pity that PLX Devices did not continue developing a system around their Multi Function Displays. Their AFR meter has a dash display covering everything you want, but one thing at a time. You can set alarms on things so if e.g. oil temperature exceeds 125 C it switches over to showing oil pressure.
    Trouble is they only ever made senders for a few items , you daisychained sender boxes to each MFD..
    I think they do temperatures and air fuel ratio senders.

    I based my setup on this as I have a PLX devices AFR sender (trashed the nice MFD display unit..shorted 12 volts to a 3.3 volt signal) so I made my own MFDs and added some more measurements using the PLX protocol.

    Under my dash I have two 1.3" OLED dot matrix displays. On these I can choose from various things:
    Battery 1/2 voltage
    Oil pressure
    CHT left/right

    Usually leave it on AFR and a CHT reading
    But not when I took that picture.

    I think finding a graphics LCD panel and putting it in the clock position with a circular window and filling that with little pictures could be fun.
    Last edited: Feb 12, 2020
    Valveandy likes this.
  9. If I recall the old Mercedes W123 models had a 3 in 1 instrument in the dash.

    Oil temp & pressure and one other I think.


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