So I'm trying to wire up the sensors on my 13b when I realize that I
have no idea exactly what sensor that is sticking out of the block. A
quick read through the 13b service manual was no help -- it's like the
sensor doesn't exist.
The sensor I an referring to is the one located just below and to the
left of the oil pressure sensor. It's about 3/8" in diameter & has a
spade connection on the top of it. I had assumed it was an oil temp
sensor, but a visitor thought it more likely a water temp sensor in the
cooling jacket.
So -- can anyone tell me what it actually is?
Mark Supinski
Water temp probably. Put an ohm meter on it. If it is resistance it is
water temp for sure.
Why would a water temp be different than an oil temp? Presumably both
would be resistive sensors.
This all begs a more pressing question for me: where are the preferred
locations for installing all the sensors I need? Are there "best
practices" locations? Obviously, they don't all go in the block. If I
need to be ordering special fittings for sensors, now would be the time
since I've started the whole plumbing process.
Mark Supinski
I don't think it is oil temp. As far as I can tell Mazda never put
an oil temp sensor on the 2nd gen engines.
Well I would tap the output part of the water pump coming out
of the block and then the output from the rad. That should help when
it comes time to develop the aerodynamic ducting. Also coolant pressure sensors
in the same places. Oil temp in and out of the oil cooler. Same reasons.
Oil pressure sensors in the same places in the remote chance the oil
cooler gets plugged up. Then of course you need EGT sensors.
The ultimate is a combustion chamber temperature sensor just under the
leading spark plugs within a couple of mm from the combustion
chamber. You will need this information if you plan to run some
"advanced" coolant like Evans NPG+ with low thermal transfer properties.
Paul Lamar ...No rotor no motor.
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