GSXR coolant sensor / engine temp sensor

[A Reinke]

anybody out there using the stock GSXR engine temp sensor / coolant sensor with their aftermarket ECM?

if so, did anyone find the resistance values of the sensor through its heat range? ...a pot of water on my stove is a last resort...

any help appreciated, thanks,

~Adam

[A Reinke]

anybody out there using the stock GSXR engine temp sensor / coolant sensor with their aftermarket ECM?

if so, did anyone find the resistance values of the sensor through its heat range? ...a pot of water on my stove is a last resort...

any help appreciated, thanks,

~Adam

[Kirk Feldkamp]

We use the MoTeC sensor instead of the stock sensor. I think there is a little graph in the service manual for the resistance at different temps, but I'm not sure. It's a pretty simple operation, the stove is really not too tough!

[Dan Deussen @ Weber Motor]

If you want better results, use oil instead of water on your stove. It won't boil as easy and you can go above 100 deg C. These sensors are non-linear so I would suggest taking measurements every 5 deg C or so.

Daniel Deussen
www.walbro-italy.com (http://www.walbro-italy.com)

[acracker]

I'm using the stock one with a Performance Electronics system with no problems. If there is an issue, I believe the sensor has normal pipe thread so other sensors should interchange.

Aaron Bloch

[A Reinke]

turbotwig, our Motec sensor wont fit in the Suzuki engine block. did you turn it down to use it?

[Kirk Feldkamp]

We put it at the bottom of our swirl pot. http://fsae.com/groupee_common/emoticons/icon_cool.gif

You can see it in a few of the pics at:
http://www.me.berkeley.edu/ME102B_S04/

Go to Previous Student Projects... FSAE Turbo System... then System Pictures. First Row, third picture. You can see it at the bottom of the silver thing hanging in the upper left of the picture.

[Charlie]

The Motec sensor is just your typical GM-style coolant temp sensor. One wire is ground, and it provides a resistance to ground signal.

The GM sensor is pretty much the standard and you can pick up a 1 wire sensor (grounds through the threads) with the same characteristics that is 1/8 NPT.

If you put your engine sensor off the engine, it has no clue about engine temp unless the thermostat is open, and even then it isn't quite right.

-Charlie Ping

I just need enough to tide me over until I need more.

[Kirk Feldkamp]

Well, when are you really going to drive the car when the engine is cold anyway? Or for that matter, why would you worry about the temperature when the thermostat is closed? So the sensor will be getting H2O straight from the head anyway when it's open. Furthermore, the heat loss due to convection from the foot of tube between the thermostat housing and the swirl pot is essentially zero. Basically, it's close enough.

-twig

[Charlie]

Hmm I wonder what they make cold start tables for? http://fsae.com/groupee_common/emoticons/icon_wink.gif

-Charlie Ping

I just need enough to tide me over until I need more.

[Kirk Feldkamp]

Well, sure... but then it comes up to temp, and things are kosher! It was pretty cold this winter, and things fired up just fine! http://fsae.com/groupee_common/emoticons/icon_cool.gif

-twig

[Kevin Hall]

Charlie

Any idea what the 1/8 NPT sensor might be off.......or have a Part # or something? I'd love to get one that might be tapped into the F4 Thermostat housing.

Kevin Hall
University of Saskatchewan
'03-'04 Team Director

[Charlie]

The Autometer electric temp sender is one way, also Racetech makes some but they look really homemade. Sorry no part #s offhand.

-Charlie Ping

I just need enough to tide me over until I need more.

[Kirk Feldkamp]

I'd say just head over to a parts store and ask for a GM temp sender. They'll probably have a few different ones, but you can tell which one is going to work pretty quickly.

-twig

[B Lewis @ PE Engine Management]

We've got some temp sensor datasheets on our website under "Support". None are 1/8" but the one online has the cal curve you are looking for. The part number on the sheet in the GM part number. I will check today if I have any ones with 1/8" pipe

Brian Lewis
Performance Electronics, Ltd.
www.pe-ltd.com (http://www.pe-ltd.com)
"Complete Engine Management Systems for $798"

[Kevin Hall]

I have no troubles finding the standard 3/8 NPT ones. I have a couple kickin around the shop, I just hope that one has a resistance curve close to a GM one and fits in the Honda sensor fitting in the thermostat housing. It would make temp readings alot better which is nice when you go out for that first run in the snow.

Kevin Hall
University of Saskatchewan
'03-'04 Team Director

[Dan Deussen @ Weber Motor]

I'm not familiar with the stock Honda sensor fitting, but drilling the hole out and tapping it with the proper thread works on a Suzuki.

Daniel Deussen
www.walbro-italy.com (http://www.walbro-italy.com)

[A Reinke]

intalling the sensor is not an issue, nor is how many wires go to it. i knew this already http://fsae.com/groupee_common/emoticons/icon_wink.gif

what i need is the values or restistance through its heat range...and i'm being repetitive. http://fsae.com/groupee_common/emoticons/icon_smile.gif

[acracker]

From the electrical system section of the service manual I found this table (pg 7-26)
resistance vs water temp
resistance: over 2.5k = under 19 degrees C
~.811k = ~50 C
~.1k = 120-139 C
0k = over 140 C

hope this helps

Aaron Bloch

[A Reinke]

thank you Aaron