Dry Sump / Oil temp sender Options

[Charles Freeborn]

Greetings.
I've got a dry sump system on my car, 6 qt tank, dual front mount coolers.
Currently the temp sender is in the stock location (bottom of engine). Considering it's scavenged and may not have that much oil in it, is this the best location for the temp sending unit? There are a variety of other locations I could put it associated with the dry sump plumbing.
Thx.

[GregAmy]

Your concern about measuring oil temps in a scavenged sump are valid; that's not a good place (you're basically just measuring the temperature of the case). And note that we really can't compare scavanged oil temps to that of a wet sump system, it's just a different animal.

I measure my oil temps in the race car between the cooler and the sump tank*, so that I can know the temp of the oil going back into the engine. You may prefer to monitor it coming out of the engine? Or do both to compare the efficiency of your coolers.

Stangely, I'm having a damned hard time getting the post-cooler oil temps above 198-200, even with a 215 thermostat. Mocal single cooler up front. I'm having to tape up parts of the cooler to get it higher. Yup, I've verified the accuracy of the sensors/data acq config.

GA

*Edit: my system runs from the scavenge pump through a Canton oil filter, then through the thermostat/cooler, then through another Canton oil filter then to the sump tank. My sensor is in that second filter housing (because there's a fitting right there for it). Absent that I'd put the sensor in a bung on the sump tank itself.

[stownsen914]

I've forgotten where the stock sender is, but if it's in the bottom of the case measuring pre-scavenge oil, then I'd agree it's a sub-optimal place to measure temp. It'll be substantially hotter there if you run a front cooler. Anywhere post-cooler would be good.

911s have the sender in the engine, in the pressure circuit, for reference.