Best place for Water Temp sensor (M44)

[NitroJunkie]

Hi,


I nearly finished my turbo project but as i was putting everything back to its places, i couldnt find anywhere to put the water temp sensor for my DEFIs..

Every other sonsors are in their places (fuel press,oil press,oil temp,EGT,boost..) but i couldnt find anywhere for the water temp..

Now i know there are 2 water sensors in the factory setup (one in the front side of the block and the other is on the radiator) and i dont want to mess with them..

My goal is to have the iminent water temperature, not the cooled off water temp in the radiator or the hot water temp in the return pipes, so i need to find a place and drilling the block is not prefered ..

Any suggestions??

Thanks

[Cristian G in Oz]

The M44 has the ECU and Guage cluster temp sensor fitted into one sensor that fitts into the inlet side of the head (under #1 inlet against the block mounting side).

You don't say if your converting from an E30 M42, E36 M42 or E36 M44.

On the M44 sensor it has 4 wires. 2 go to the ECU for engine management. The other 2 go through teh ECU for teh guage cluster reading.

The one on the radiator is for the cooling fan for aircon and the electric fan on the back of the radiator (later E36 setup).

If you want another fitting on the head you will have to drill and tap it unless you make up a fitting using the throttle heating plumbing.

Hope this helps.

Cristian

[NitroJunkie]

Yes it helped a lot..

After serious thinking, i decided to take the water temp reading from the same place which the radiator temp switch sits..

It was the easy way,i know.. But i couldnt take the risk of having an air bubble in the engine block because of a lousy water temp sensor..

Throttle heating plumbing was used for the watercooling of the turbo..