I have canfield heads on my car so I dont have any holes in my heads for Fan switch and Temp sender so, I have put all three sensors (CTS/gauge/fan) on the front of my HSR and then I put the heater hose to the upper hole on the waterpump just to have it connected.

But now I wont get any heat in my car so I guess I have to move the heater hose to the intake, this mean I have to move 1 sensor to another location, where?

If I drill a hole and tap it where the coolant ports are blocked off by the intake on the back of the heads what sensor should I move to this location the get the most accurate reading from it, or any other ideas?????

/N.

 

Over here, you can buy tstat housings tapped for a sensor.

I went and looked at my hsr.
Tap the flat pad on the left side just below the 3/8 hole on the front of the intake.
As long as you never plan on running a short WP and pre 69 brackets you'll never have a problem.
That should give you 4 spots to use.

I still haven't figured how you did the heater with only one hose.......
Or do 3rd gen wp's have two connections on the pump?

 

I have an old style water pump( heater return line goes to radiator, heater inlet from intake)............. anyone know what thread size it is? then I can reuse my connector.......... and buy a plug.............

/N.

 

Heater hose is usually 1/2" NPT.
The rt hand hole on my HSR is 1/2".
The left hand one is 3/8"NPT- for a sensor

I forgot about the tank connection for the return.
Only been about 10yrs since I had a 3rd gen.

I wonder what a NPT tap goes for in Sweden?

 

You dont want to know what US stuff coste here in sweden gas is now 6.3$/gallon

I'll see what taps I can find here at work (volvo)..............