Best place to install 2nd Water Temp Sensor
Turbo Mini Forums

Apparently one can't use one water temp sensor to feed both a dash gauge and the ECU. Is there a favorite place to install a second water temp sensor in the engine block?? OR do you build a T pipe from the block to accomodate two sensors??

Use a Mini 850 thermostat housing and fit the temp gauge sender in that with the coolant temp sensor for the ECU in the head where the sender for the gauge used to be :)

or put a mpi/metro sandwhich plate under the thermostat housing and use teh output from that

Thinking about it, I suspect Minimized is already using the MPi sandwich plate and there is no hole in the head for a temp sender

As Andy above, I've used the Metro sandwich plate with the heater stub modified to take the sensor.

The main point is to make sure the ECU sensor is before (ie, below) the thermostat so it watches the engine temperature as it warms up (as per Sprocket's way). The one for the dash guage isn't so important (ie, can be after the thermostat, it just won't read until the thermostat is open) but using the sandwich plate, you can put the thermostat after (on top of) both of them.

EDIT - this is now in the wrong order due to my slow typing

EDIT 2 - if no drilling in head, modify sandwich plate to take both.....

Edited by Rod S on 2nd May, 2010.

Schrödinger's cat - so which one am I ???

Thanks very much for your inputs. Sorry, I forgot to mention that I do not have room for a sandwich plate under the the thermostat housing since we had to fabricate an elaborate bracket that bolts on top of the housing. The bracket is used to support the Eaton 45 SC, as well as provide a strong fixed point, on the top of the engine to allow me to install a custom Engine Steady to the bulkhead (firewall).

I just learned however that my after mareket aluminum radiator has a plugged hole on the bottom that was designed to fit the automatic electric fan control on the SPI. Since I control my fan manually now with a dash switch I can install the original electric fan temp sensor into the aluminum radiator and use that for a dash gauge.

The bottom of the rad is not even close to engine temp. Aslo, the sensor you talk about that fits in the bottom of the rad, is infact a switch.

Hey Sprocket,

Can't thank you enough! I would have screwed up bad and would never have figured out what was wrong. Thanks

Would it work if I could make a Y pipe to screw into the block where the current sensor is and screw two water temp sensors in???

Minimized
www.LIMENY.org

How about one of these

http://cgi.ebay.co.uk/32mm-WATER-PIPE-HOSE...f#ht_4262wt_902

Thanks..What a great idea!

I just measured the ID of my coolant hose and it is only 25mm but I will check to see if I can figure out how to make it fit. This looks like the best solution.

http://cgi.ebay.co.uk/28mm-WATER-PIPE-HOSE...=item3efee5b9e4
that should be a good fit

Yes i moved to the darkside

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