Oil Pressure Tap thread- Gen 3

Post by **Benckj** » Fri Jul 30, 2021 11:47 am

This summer I'd like to install an oil pressure sensor on the gen 3 engine. Sensor will be connected into my MS EMS and displayed on my gauge display. Will also use the instrument for warnings and protection once I get a handle on pressure accuracy and how to program MS option.

To save me pulling the available pressure plugs near oil filter can someone tell me which best port to use and possibly the thread pitch? Will probably order either a 150 or 200psi sensor which comes in 1/8NPT. Pics attached of engine & display.

Also may install sensor on fuel pressure even though I have gauge in engine bay. Would be nice to see what readings are while driving and log data.

Post by **GDII** » Fri Jul 30, 2021 12:50 pm

Either port works. They go into the same part of the sump. They are 3/8 BSP. Thanks to GlanzaAtHeart.

: GEN3-5 3SGTE oil bung sizes.png (157.88 KiB) Viewed 2962 times

Post by **Benckj** » Fri Jul 30, 2021 1:28 pm

Thanks for that GD11. I’ll order up the sensors now and start for planning my I/O.

Post by **GDII** » Fri Jul 30, 2021 1:38 pm

This might be a good unit to use. Has both temp and pressure in one unit. 10 BAR pressure.
https://www.msel.co.nz/Bosch-Combo-Temp ... M10-thread
You will need this plug to wire it in.
https://www.msel.co.nz/epages/motorspor ... NBOS5001FK

Post by **Benckj** » Fri Jul 30, 2021 8:42 pm

Thx but I’ll probably go Chinese for a 150psi sensor at $16 incl connector pigtail & shipping. Have used these in the past and found them to be very good. Haven’t had a dud yet.

Post by **GlanzaAtHeart** » Fri Jul 30, 2021 10:14 pm

Those ports are TIGHT.

Like rattle gun couldn't get them off tight.

Just a heads up around the sensor - I have a autogauge oil pressure sender. These are pretty much chinese units.

It hits the suspension brace that is near these ports. It will depend port you put it in. The left hand port on the diagram it wouldn't fit (too big) and the right hand one I couldn't get a power bar in, so I went with middle.

So watch out on sizing of the sender.

Post by **Benckj** » Sat Jul 31, 2021 2:06 am

Good point regarding access and removing port. May need to Chuck car on ramps and have a look.

Post by **GDII** » Sat Jul 31, 2021 5:55 pm

How big is the unit you are looking at? Thomas's is quite large vs the one I linked.

Post by **GlanzaAtHeart** » Sat Jul 31, 2021 7:39 pm

This is my unit:

If you use a chinese unit they're most likely the same.

This is mine.

: oil pressure sender.jpg (58.88 KiB) Viewed 2927 times

Post by **Benckj** » Sat Jul 31, 2021 9:37 pm

The one I’d get is much smaller and has 3 wires. I’ll post a pic when I’m back at work PC.

The MR2 Owner's Club of New Zealand

Oil Pressure Tap thread- Gen 3

Oil Pressure Tap thread- Gen 3

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