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  • 1965 - 1973 Classic Mustangs -General/Talk-
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mechanical water temp gauge - install question

  • Thread starter Thread starter enferno
  • Start date Start date Feb 21, 2007

enferno

Member
Jun 20, 2006
418
2
16
Feb 21, 2007
#1
  • Feb 21, 2007
  • #1
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

Member
Jan 26, 2004
158
0
17
delaware, ohio
Feb 21, 2007
#2
  • Feb 21, 2007
  • #2
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

Member
Jun 20, 2006
418
2
16
Feb 21, 2007
#3
  • Feb 21, 2007
  • #3
gbarber said:
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.
Click to expand...



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

hsr

Member
Apr 15, 2004
138
0
17
Riverview, MI USA
Feb 21, 2007
#4
  • Feb 21, 2007
  • #4
enferno said:
mine threads in fine . . but what's going to keep the water from squirting out the hole in the fitting?
Click to expand...

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.
 
C

Cobra ssc

Member
May 31, 2006
80
0
7
Austin, TX
Feb 21, 2007
#5
  • Feb 21, 2007
  • #5
gbarber said:
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.
Click to expand...

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

Member
Jun 20, 2006
418
2
16
Feb 21, 2007
#6
  • Feb 21, 2007
  • #6
oh i have one of those!

thanks for clearing it up!
 

gbarber

Member
Jan 26, 2004
158
0
17
delaware, ohio
Feb 21, 2007
#7
  • Feb 21, 2007
  • #7
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.
 
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