Engine Oil Too Cold

[gtr jet]

I binned my heat exchanger when I built my motor and fitted an oil cooler a couple of years ago not knowing it was needed however I haven't had an accurate oil temp gauge since then.

Now I'm curious as to how long mine takes to get up to temp.

[Chris32]

It's because you're still running your stock water/oil heat exchanger

My oil temp probe is in the sandwich/thermostat plate

If you ever see guys with RB20s with massive oil cooler without thermostats - their oil takes ages to heat up.... (I for one did the same thing on my RB20 back a decade ago, ran an oil cooler without a thermostat - very silly).

So is the OP......... I can't see a oil cooler pulling that sort of heat out of the oil though

[dan.1337]

My temp probe is in the sandwich plate.

To give you an idea of the temps, I blocked off the oil cooler with race tape on my way back from PI to Melbourne the other week. Ambient temp was around 10C and the oil temp was around 80C on the freeway. The race tape got blown off (was pissing down) while driving at 100kmh (3000RPM-ish) and my oil temp plummeted down to 30-40C in a matter of a couple of minutes.

I'm pretty sure the oil temp prong is working as oil temps sit on around 80C with the cooler blocked, and was around the 120C mark on track with no cooler.

As mentioned earlier, I'm still running the factory water/oil exchanger so I'm still very confused as to why the thermostat isn't regulating the temps properly...

[scotty nm35]

Because your temp probe is on the outlet of the cooler.

[dan.1337]

Because your temp probe is on the outlet of the cooler.

Yup, because I want to know what temp oil is going into the engine right?

[Ben C34]

Yup, because I want to know what temp oil is going into the engine right?

Nope.

Think about where the coolant temp sensor is.