Temp Probe on a 87 175TLCU

[trimmers]

Can someone advise me on the location of installing the temp probe. I think i understand this particular model, Evinrude, 1987 175 TLCU 6 cyl., does not allow for an actual water temp prob, so I assume there is a place for the probe on the head? I want a temp guage, but want it to be right. Any successful attempts on here? Thanks for your help.

 

[daselbee]

Re: Temp Probe on a 87 175TLCU

I used a cylinder head temp kit from Faria Instruments.
It comes with the gauge and the sender/probe.

The sender is attached by removing one head bolt, putting the sender mounting tab hole over the head bolt hole, and re-installing the head bolt, torqueing as required.

Then wire it to the helm.

www.faria.com
Cyl Head Temp 60?-220?F w/ sndr
Factory #: GP9448 Part #: 14706
Size: 2"
Weight: .28 Lbs.

 

[trimmers]

Re: Temp Probe on a 87 175TLCU

Thank you, but which head bolt? I think if i understand it right, the mount part for the actual probe is supposed to fit into a blank hole or something in the head?

 

[daselbee]

Re: Temp Probe on a 87 175TLCU

No, the sensor just is held in tight contact with the head surface by the sensor mounting tab, and of course then held with a head bolt.

I used a head bolt next to #1 cylinder (upper cyl) on the inboard side of the head, and one that had a suitable flat spot next to it for the sensor to contact.

I actually installed two sensors, feeding one gauge, with a switch to select the port or starboard sensor.

 

[jonesg]

Re: Temp Probe on a 87 175TLCU

Look for a blind tapped hole near the plugs, I have a 94 150 and there is a tapped hole in each head. I used the trim guage wiring to route the signal to the guage, just snip it near the plug.
If they didn't leave a tapped hole then there are surface mount senders.

 

[emdsapmgr]

Re: Temp Probe on a 87 175TLCU

These old crossflows don't typically have a tapped hole for a temp sender. It does not matter which head bolt you use, as long as the probe evenly contacts the surface of the head cover.

 

[trimmers]

Re: Temp Probe on a 87 175TLCU

Thank you very much for all the help. Hey Daselbee, I like that 2 sensor to one guage idea, I think I am going to do that too, Makes sense to be able to see from one side and the other for troubleshooting purposes. Thanks again, Dan