Update: Air/Fuel ratio, Coolant & Oil temp PLUS Oil Pressure DIY Display

ZontheRocks

Very nice!

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'16 Pearl White Sport | Stillen Gen. 3 | Motordyne ART | Motordyne Shockwave | ZSpeed | Powertrix | EVO-R | Aeroworkz | Nismo | Z1 | EcuTek | Tuned by Seb @ SpecialtyZ

MotorvateDIY

Thanks! It has been a fun project to work on.

Two things that have surprised me about our cars:
• Our engine oil pressure is VERY high!
More than 120 psi on a cold start (well, In Toronto during December)
With engine oil at or above 80C/176F we still have 90+ psi at high engine RPM

• The differential oil can heat up 3C/5F during a single 0-60 mph run. (and that was during a 0C / 32F day)

With the G37 Sport Sedan being about 500 lbs heavier, I suspect the diff oil heats up quick than the ~3200 lbs 370z.

Rusty

Nice work.

I've seen rear diff temps high as 275F with my SpeedHut temp gauge.

Cold start oil pressure will be over 110 psi from what I've seen. Oil pressure at 3000 rpm will be around 90 psi.

Oil pressure sensor should read 150 psi.

__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

MotorvateDIY

Thanks Rusty! I assume your oil pressure readings are with 40 weight oil. (was it 5W40 or 10W40?)

Was your 275F / 135C diff temps during a track day?

As for the oil pressure scale maximum number, it won't ever get above about 120-125 PSI as that is when the oil pump pressure relief valve opens (bypass mode). The display is optimized for the expected min/max ranges.

Funny thing is, I do have a 150 PSI sensor on the engine.

Rusty

I run Mobile 1 0w40.

The 275F reading was from both a track day and 2 hours of driving at 75 mph on the highway. It only takes about 12 miles of driving at 55 mph to see the temp raise to 120F on a 75F day.

__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html