Engine water temp sender location.

[scott nutter1]

I am in the process of hooking up a new engine water temperature gauge.
The manufacture, maxxtow, recommends to put the sending unit in the radiator. I have the aluminum radiator and it has a port to accept the sending
unit.
Our stock system has the sending unit in the intake manifold.

Is there a advantage in having the sending unit in the rad? Is the intake manifold still the best location?
Or run the new gauge with the probe in the rad, and leave the stock gauge as is?

Opinions? Recommendations?
Thanks, Scott
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi.
Houston, Texas

 

[Jim Hupy]

If your intention is to tell the coolant temperature at the hottest place
in the engine, as near to the thermostat housing as possible should work.
If you want to tell coolant temperature in the cross flow radiator, then
your probe location will suffice.
Jim Hupy

I am in the process of hooking up a new engine water temperature gauge.
The manufacture, maxxtow, recommends to put the sending unit in the
radiator. I have the aluminum radiator and it has a port to accept the
sending
unit.
Our stock system has the sending unit in the intake manifold.

Is there a advantage in having the sending unit in the rad? Is the intake
manifold still the best location?
Or run the new gauge with the probe in the rad, and leave the stock gauge
as is?

Opinions? Recommendations?
Thanks, Scott
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final
drive, Quad bags, tankless water heater, everything Lenzi.
Houston, Texas

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[scott nutter1]

Thanks Jim
The rad port is right next to the water inlet uptop on the rad.

If it was yours, where would you mount it?

Thanks, scott
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi.
Houston, Texas

 

[Jim Hupy]

In your case, there shouldn't be much difference if the port is near the
top radiator hose. For me, the stock location, as well as the stock gage
works just fine. The stock gage is known to be only an approximate wild
assed guess, but that seems good enough for my needs. A high mileage 403,
well broken in, doesn't make enough heat to worry about for me. But, if you
have a tight 455 with great compression, and some head and block milling
done, your needs might be different than mine.
Jim Hupy

> Thanks Jim
> The rad port is right next to the water inlet uptop on the rad.
>
> If it was yours, where would you mount it?
>
> Thanks, scott
> --
> Scott Nutter
> 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final
> drive, Quad bags, tankless water heater, everything Lenzi.
> Houston, Texas
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[john phillips]

The main difference is what side of the thermostat do you want to be on.
Radiator/coolant temp is important but engine temp is more important.
What do you want to do if you have a stuck thermostat?
I am a data guy, I vote for both engine temp and return coolant temp.

> In your case, there shouldn't be much difference if the port is near the
> top radiator hose. For me, the stock location, as well as the stock gage
> works just fine. The stock gage is known to be only an approximate wild
> assed guess, but that seems good enough for my needs. A high mileage 403,
> well broken in, doesn't make enough heat to worry about for me. But, if you
> have a tight 455 with great compression, and some head and block milling
> done, your needs might be different than mine.
> Jim Hupy
>

>
> > Thanks Jim
> > The rad port is right next to the water inlet uptop on the rad.
> >
> > If it was yours, where would you mount it?
> >
> > Thanks, scott
> > --
> > Scott Nutter
> > 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21
> final
> > drive, Quad bags, tankless water heater, everything Lenzi.
> > Houston, Texas
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--

*John Phillips*

 

[Jim Hupy]

In these days of heavy traffic, and "distracted driving incidents", I
figure that systems like the digi-panel that have visual and auditory
alerts with flashing lights and warning chimes should suffice. I am not a
proponent of gages that require that you take your eyes off the road. We
travel a great deal up and down the Interstate 5 corridor between San
Francisco, California and the Canadian border. Some of the most congested
roads most of you will ever encounter. Absolutely no place to be taking
your eyes off the road. Portland, Oregon, Olympia, Tacoma, Seattle,
Everett, Bellingham all are high speed choke points that go from 70 mph to
Zero in a hurry. Just me, your situation might differ.
Jim Hupy

The main difference is what side of the thermostat do you want to be on.
Radiator/coolant temp is important but engine temp is more important.
What do you want to do if you have a stuck thermostat?
I am a data guy, I vote for both engine temp and return coolant temp.

> In your case, there shouldn't be much difference if the port is near the
> top radiator hose. For me, the stock location, as well as the stock gage
> works just fine. The stock gage is known to be only an approximate wild
> assed guess, but that seems good enough for my needs. A high mileage 403,
> well broken in, doesn't make enough heat to worry about for me. But, if
you
> have a tight 455 with great compression, and some head and block milling
> done, your needs might be different than mine.
> Jim Hupy
>

>
> > Thanks Jim
> > The rad port is right next to the water inlet uptop on the rad.
> >
> > If it was yours, where would you mount it?
> >
> > Thanks, scott
> > --
> > Scott Nutter
> > 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21
> final
> > drive, Quad bags, tankless water heater, everything Lenzi.
> > Houston, Texas
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--

*John Phillips*
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[emerystora]

Scott
I would use the existing location in the intake manifold next to the thermostat. You really want to measure the heat of the engine, not the radiator.
I believe the port you are referring to is likely the low water level port. If you get low on water you would not register anything on your temperature gauge.

Emery Stora
77 Kingsley
Frederick, CO

>
> I am in the process of hooking up a new engine water temperature gauge.
> The manufacture, maxxtow, recommends to put the sending unit in the radiator. I have the aluminum radiator and it has a port to accept the sending
> unit.
> Our stock system has the sending unit in the intake manifold.
>
> Is there a advantage in having the sending unit in the rad? Is the intake manifold still the best location?
> Or run the new gauge with the probe in the rad, and leave the stock gauge as is?
>
> Opinions? Recommendations?
> Thanks, Scott
> --
> Scott Nutter
> 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi.
> Houston, Texas
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

 

[jim kanomata1]

Should your thermostat stuck shut, you'll not know.

> In these days of heavy traffic, and "distracted driving incidents", I
> figure that systems like the digi-panel that have visual and auditory
> alerts with flashing lights and warning chimes should suffice. I am not a
> proponent of gages that require that you take your eyes off the road. We
> travel a great deal up and down the Interstate 5 corridor between San
> Francisco, California and the Canadian border. Some of the most congested
> roads most of you will ever encounter. Absolutely no place to be taking
> your eyes off the road. Portland, Oregon, Olympia, Tacoma, Seattle,
> Everett, Bellingham all are high speed choke points that go from 70 mph to
> Zero in a hurry. Just me, your situation might differ.
> Jim Hupy
>

>
> The main difference is what side of the thermostat do you want to be on.
> Radiator/coolant temp is important but engine temp is more important.
> What do you want to do if you have a stuck thermostat?
> I am a data guy, I vote for both engine temp and return coolant temp.
>

>
> > In your case, there shouldn't be much difference if the port is near the
> > top radiator hose. For me, the stock location, as well as the stock gage
> > works just fine. The stock gage is known to be only an approximate wild
> > assed guess, but that seems good enough for my needs. A high mileage 403,
> > well broken in, doesn't make enough heat to worry about for me. But, if
> you
> > have a tight 455 with great compression, and some head and block milling
> > done, your needs might be different than mine.
> > Jim Hupy
> >

> >
> > > Thanks Jim
> > > The rad port is right next to the water inlet uptop on the rad.
> > >
> > > If it was yours, where would you mount it?
> > >
> > > Thanks, scott
> > > --
> > > Scott Nutter
> > > 1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21
> > final
> > > drive, Quad bags, tankless water heater, everything Lenzi.
> > > Houston, Texas
> > >
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> > >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
>
>
>
> --
>
> *John Phillips*
> _______________________________________________
> GMCnet mailing list
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>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502

 

[robert mueller]

Scott,

Double Trouble has:

1) Aluminum radiator
2) OEM water temp gauge
3) Secondary water temp gauge
4) Digi-Panel

All hooked up and working fine, in fact the LED bars on the Digi-Panel mirror the Secondary water temp gauge readings.

Unfortunately my little grey cells are not and I can't remember how I hooked them all up. If you can wait until I get back to
Houston (Sept 4th) I'll check and let you know.

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808


-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of Scott Nutter
Sent: Sunday, August 20, 2017 12:50 AM
To: gmclist
Subject: [GMCnet] Engine water temp sender location.

I am in the process of hooking up a new engine water temperature gauge.
The manufacture, maxxtow, recommends to put the sending unit in the radiator. I have the aluminum radiator and it has a port to
accept the sending
unit.
Our stock system has the sending unit in the intake manifold.

Is there a advantage in having the sending unit in the rad? Is the intake manifold still the best location?
Or run the new gauge with the probe in the rad, and leave the stock gauge as is?

Opinions? Recommendations?
Thanks, Scott
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything
Lenzi.
Houston, Texas

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[scott nutter1]

Thanks guys,
All good points. I think I will keep the sensor in the original position in the intake manifold.
And Emery is right, the port in the rad is for the low coolant sensor.

My deciding factor for the stock location is to also keep a eye on the thermostat..

Thanks for all the suggestions!
Scott.
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi.
Houston, Texas