mechanical water temp gauge - install question

[enferno]

i have a sunpro mechanical water temp gauge. on the sensor end, the fitting that screws into the intake manifold is hollow in the middle (for the sensor tube). my question is, am i missing a piece, or some method of installing this? is there a certain port that i need to screw this into? here are some pics of what i'm working with

my intake is an aluminum manifold from a 85 mustang

the sensor:
http://home.comcast.net/~enferno/DSC02677.JPG

the fitting:
http://home.comcast.net/~enferno/DSC02678.JPG

ports on the back right of the intake:
http://home.comcast.net/~enferno/DSC02679.JPG

port on the back left of the intake:
http://home.comcast.net/~enferno/DSC02681.JPG

current water temp sending unit port:
http://home.comcast.net/~enferno/DSC02680.JPG



thanks for your help!

 

[gbarber]

I installed a similar Summit gauge in one of the left rear ports on my Edelbrock intake. The sending unit on mine looks just like the one you have. I had to buy an adaptor at NAPA to match the thread of the sending unit to my intake.

 

[enferno]

I installed a similar Summit gauge in one of the left rear ports on my Edelbrock intake. The sending unit on mine looks just like the one you have. I had to buy an adaptor at NAPA to match the thread of the sending unit to my intake.

mine threads in fine . . but what's going to keep the water from squirting out the hole in the fitting?

 

[hsr]

mine threads in fine . . but what's going to keep the water from squirting out the hole in the fitting?

You have to use the adapter regardless of whether the threads fit or not. The inside of the adapter has a tapered seat for the probe to sit against and the threaded loose piece locks it down.

See attached.

 

[Cobra ssc]

I installed a similar Summit gauge in one of the left rear ports on my Edelbrock intake. The sending unit on mine looks just like the one you have. I had to buy an adaptor at NAPA to match the thread of the sending unit to my intake.

Don't use the sending unit on the rear ports of the intake manifold, coolant doesn't flow through there, only the front ones. You will not get accurate readings from there. FYI

 

[enferno]

oh i have one of those!

thanks for clearing it up!

 

[gbarber]

The rear ports may not have the flow that you would get from the front of the intake and may not be as accurate as the front, but I didn't want to move the factory sending unit. I couldn't get the plug out of the front passenger side. I was afraid going to break something trying to remove it, so I put it in the back. Thanks for the info on the flow.