Coolant temp sensors

[Eric Pearson]

Ok anyone out there who has a Fitech 6 pack and Dakota digital gauges how are you pluming 2 coolant temp sensors. I really don’t want to put them in the radiator hose and a water neck spacer won’t work due to my a/c compressor is in the way! Any ideas are welcome! Thanks as always

 

[493 Mike]

Ok anyone out there who has a Fitech 6 pack and Dakota digital gauges how are you pluming 2 coolant temp sensors. I really don’t want to put them in the radiator hose and a water neck spacer won’t work due to my a/c compressor is in the way! Any ideas are welcome! Thanks as always

What engine?
Mike

 

[Eric Pearson]

383 with a 440 source water pump housing

 

[493 Mike]

383 with a 440 source water pump housing

According to the photo on 440s website their housing has 2 temp source openings and 2 heater hose ports?
Mike

 

[Bird 426]

Aluminum one should have 2 ports. Or you could down to the block drains.

 

[toolmanmike]

What do the sensors look like? Are they short or do they have a probe that goes in the coolant passage. Some sensors need a lot of room.

 

[JonR]

I have the Slant Six with a standard looking water outlet containing the thermostat. I drilled and tapped a hole into the water outlet for my second sensor. The water outlet had room for the sensor to stick in there. Now I have the dashboard temp gauge in the head before the thermostat and the after market temp gauge in the water outlet after the thermostat. I can physically see when the thermostat opens with this arrangement.

 

[Eric Pearson]

Thai you to all that have replied,unfortunately the sensors that I have to use are 3/8 npt and approximately 1 /8 in long. I’m using the CVF serpentine belt system so I can’t use the small 1/8 in npt port on the water pump housing. Also I can’t use a water neck spacer due to the location of the A/C compressor. Think I have a solution for this problem. I’m thinking that I can use a 3/8 npt Y and a short nipple to plumb them both together. Fingers crossed

 

[493 Mike]

Thai you to all that have replied,unfortunately the sensors that I have to use are 3/8 npt and approximately 1 /8 in long. I’m using the CVF serpentine belt system so I can’t use the small 1/8 in npt port on the water pump housing. Also I can’t use a water neck spacer due to the location of the A/C compressor. Think I have a solution for this problem. I’m thinking that I can use a 3/8 npt Y and a short nipple to plumb them both together. Fingers crossed

Drill and tap that small hole to 3/8". It's aluminum-it's easy.
Mike

 

[JonR]

Thai you to all that have replied,unfortunately the sensors that I have to use are 3/8 npt and approximately 1 /8 in long. I’m using the CVF serpentine belt system so I can’t use the small 1/8 in npt port on the water pump housing. Also I can’t use a water neck spacer due to the location of the A/C compressor. Think I have a solution for this problem. I’m thinking that I can use a 3/8 npt Y and a short nipple to plumb them both together. Fingers crossed

I thought the same thing on mine. I was trying to use a nipple plus a tee out of the head. Did not work for two reasons, 1) the two sensors were too long and met in the middle of the tee before getting tight, and 2) the water would never really get up through that contraption to put the sensors in water all the time leading to incorrect and erratic temps. That's why I went to two separate holes for the sensors.