Engine block or head temp?

[MudRunnerTD]

Does anybody know what size hole is required to be drilled for a 1/8NPT tap?
The 1/8NPT tap was luckily the only imperial tap in my kit but has no info on what size hole to drill.

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Hi mate, you should be able to size by eye. Look through the thread at the drill bit. You want to see the bit is bigger that the shaft but smaller than the thread.

[MudRunnerTD]

I went that bolt on dual sensor unit and think I will do top and bottom of engine?

[MudRunnerTD]

There is a really interesting thread on FB asking TD owners what their Normal hwy water temp is. I have been following along just for interest and it seems anywhere from 75 to 95 is pretty normal. I will tag you in it.

[Ben-e-boy]

21/64 drillbit for 1/8npt. Thats 8.3mm. You'll get it with an 8.5mm

[Winnie]

21/64 drillbit for 1/8npt. Thats 8.3mm. You'll get it with an 8.5mm

Cheers mate that answers my question perfectly.
Didn't get a chance to play with it tonight but I did upgrade my dual battery wiring and cable to the rear of the car. All 35mm now and very minimal voltage drop to the compressor/fridges/oven in the back now.
The 10mm I used before was capable of what it was intended for at the time but things got a bit out of control and I should be future proofed for a while now.

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[the evil twin]

If you have the coolant temp probe version I would try and use the second "bolt on" sensor for oil temp monitoring/alarm.

Thats what I had planned on mine but when I arseholed the 5 speed and put the 4L85 auto in the beasty I changed to coolant temp and auto tranny temp.

[Winnie]

If you have the coolant temp probe version I would try and use the second "bolt on" sensor for oil temp monitoring/alarm.

Thats what I had planned on mine but when I arseholed the 5 speed and put the 4L85 auto in the beasty I changed to coolant temp and auto tranny temp.

I like the idea ET. Engine Guard recommend using a SS hose clamp to attach the bolt on lug to one of the oil filters to take oil temp. Doesn't sound very accurate?
Any better ideas out there? I feel like knowing the oil temp could be very handy.

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[PeeBee]

I like the idea ET. Engine Guard recommend using a SS hose clamp to attach the bolt on lug to one of the oil filters to take oil temp. Doesn't sound very accurate?
Any better ideas out there? I feel like knowing the oil temp could be very handy.

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Chris, it will be fine, its not like you need +/- 1 deg accuracy. I have used this in exactly that location for years. Its going to very close to a full contact probe, rest assured. If you are concerned with air stripping the heat away, stick a blob of insulating rubber insulation over the top of the probe head - I have some at home, will let you know what its called and can even cut you off a couple of inches and post it to you if you like. I use this stuff on the interchiller temp sensors as well.

[Winnie]

Thanks Phil, I'm more than happy with +/-1 deg, and I trust your professional opinion. . I honestly thought losses through different materials there would render the reading completely irrelevant.
Unless somebody comes up with a better idea for an accurate-ish reading for oil temperature, that is what I will do.

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[MB]

Unless somebody comes up with a better idea for an accurate-ish reading for oil temperature, that is what I will do.

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I’m shocking, still running one of them cheapo (illegal) oil pressure gauges into the GU 6.5 cab via clear piping hose.
Thinking about adding a ‘T’ piece with stop valve before the gauge so I can in cab finger drip test whilst driving whether it burns my pinkies or not
Quite incredible though how oil pressure at cold idle on a 6.5 can drop from 10psi to 5psi after a tough workout, as dodgey as it sounds, and is, the old girls oil pressure gauge lets me know I’ve overdone it
Temp gauges are betterer for sure




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