727 Temperature Sender Placement

[SweatyRabbitt]

Hello all, I'm looking to add a trans temp gauge, and was hoping to install the temp sender to the 727 case somewhere.
I may have found a port that will work, but would like some opinions on this port location.

Pic of my 727.

I found a pic showing a truck 727 trans with, what looks like a temp sender in this port location.
What do you guys think?

Thanks ahead of time for your help.

 

[pnora]

Thats the reverse servo test port. While you will get a reading I do not think it will be a true fluid temperature reading.

 

[SweatyRabbitt]

Isn't that a sender in the 2nd pic though?

I did purchase a Moroso pan with the temp port built-in, but the dang port is in the front of the pan.
What the h..ll were they thinking, every bit of road garbage could hit the sender. Common sense
would dictate that locating the temp port to the back of the pan would protect the sender better,
and when accelerating or going up an incline, the fluid would be forced to the back of the pan
where the sender is.

 

[R413]

Like he said you can put it in there, there is a picture of it. But it doesn't have any fluid moving through there unless it's in reverse or Drive first gear. Going down the freeway or fluid will flow through there, so not accurate.

Those are pressure tests ports along the passenger side.

 

[pnora]

Isn't that a sender in the 2nd pic though?

I did purchase a Moroso pan with the temp port built-in, but the dang port is in the front of the pan.
What the h..ll were they thinking, every bit of road garbage could hit the sender. Common sense
would dictate that locating the temp port to the back of the pan would protect the sender better,
and when accelerating, the fluid would be forced to the back of the pan where the sender is.

Looks like it is. Does not mean its right. And if it was right every manufacturer of a transmission temperature gauge would tell you that's the spot to install it. Which they don't. Run it in the pan and I doubt you will ever hurt it. Or buy line fittings and put it in the cooler line.

 

[j-c-c-62]

Why not sense the temp of the oil the factory designed as needing cooling in the first place?
The line leading to the OEM trans cooler?
It's all relative anyway.

 

[SweatyRabbitt]

I'm easily convinced, front of the Moroso pan it will go then.

Why not sense the temp of the oil the factory designed as needing cooling in the first place?
The line leading to the OEM trans cooler?
It's all relative anyway.

I have read that outgoing cooling lines aren't the best either, because little fluid runs through
them. Where the pan has most of the fluid being recycled through the trans over and over.

I just dislike the fact that these manufactures copy each others designs. If one has a bad
design, they all copy that same bad design and we the customers are stuck with 20 pans
with temperature ports all in the front. Just a little forward thinking and we might get a pan
with ports in the back, where the fluid is forced when you accelerate, or going up inclines.
I guess Idiocracy is alive and well. LoL!


Thanks for your help guys.

 

[1STMP]

Hello all, I'm looking to add a trans temp gauge, and was hoping to install the temp sender to the 727 case somewhere.
I may have found a port that will work, but would like some opinions on this port location.

Pic of my 727.
View attachment 1814569


I found a pic showing a truck 727 trans with, what looks like a temp sender in this port location.
What do you guys think?
View attachment 1814571

Thanks ahead of time for your help.

Drill and solder a sensor in the pan.
You'll get a true reading of fluid temp,
plus easy installation and
maintenance. Done this on neumorous
vehicles. While you're there, install a
drain plug to help with fluid and filter
changes.

 

[j-c-c-62]

I'm easily convinced, front of the Moroso pan it will go then.



I have read that outgoing cooling lines aren't the best either, because little fluid runs through
them. Where the pan has most of the fluid being recycled through the trans over and over.

I guess Idiocracy is alive and well. LoL!

Well, if that is indeed the real issue, your best solution then is to simply park the car and let it cool, because cooling a "little fluid" is rather ineffective in this context.
My previous suggestion still holds true, you are only mainly measuring temperature rise, it does not require huge amounts of fluid to achieve that goal.

 

[SweatyRabbitt]

Drill and solder a sensor in the pan.
You'll get a true reading of fluid temp,
plus easy installation and
maintenance. Done this on neumorous
vehicles. While you're there, install a
drain plug to help with fluid and filter
changes.

Thanks 1STMP for your ideas.
I didn't want to mess with my numbers matching pan, so I had no other choice but to buy another one.
I went with an aluminum 2 extra qts. moroso pan. It's a nice looking pan, but I don't like the ports in the
front. Yeah, I could probably drill and tig weld one in the back but I don't have a tig welder, and one
shouldn't have to, at the price I paid. I guess I'll just have to live with it, and dodge road kill & speed bumps.

 

[SweatyRabbitt]

I'm easily convinced, front of the Moroso pan it will go then.



I have read that outgoing cooling lines aren't the best either, because little fluid runs through
them. Where the pan has most of the fluid being recycled through the trans over and over.

I guess Idiocracy is alive and well. LoL!

Well, if that is indeed the real issue, your best solution then is to simply park the car and let it cool, because cooling a "little fluid" is rather ineffective in this context.
My previous suggestion still holds true, you are only mainly measuring temperature rise, it does not require huge amounts of fluid to achieve that goal.

LoL, I love how j-c-c-62 edited my reply in his quote, to fit his narrative.
Nice try trolling me though. "It's all relative anyway".

Go back to reply #7 to get the full jist of what I said. The idiocracy line was
about the design of the pan I purchased, not about fluid running through
cooling lines. Geez!

 

[1STMP]

Thanks 1STMP for your ideas.
I didn't want to mess with my numbers matching pan, so I had no other choice but to buy another one.
I went with an aluminum 2 extra qts. moroso pan. It's a nice looking pan, but I don't like the ports in the
front. Yeah, I could probably drill and tig weld one in the back but I don't have a tig welder, and one
shouldn't have to, at the price I paid. I guess I'll just have to live with it, and dodge road kill & speed bumps.

Did the same on my build. I'm 1" below
frame.



Not worried about it.

 

[SweatyRabbitt]

Did the same on my build. I'm 1" below
frame.View attachment 1814607View attachment 1814608

View attachment 1814609

Not worried about it.

Wow, what are you building?
Very nice fab work.

 

[1STMP]

Wow, what are you building?
Very nice fab work.

This....

Under this....

 

[1STMP]

Wow, what are you building?
Very nice fab work.

Thanks. 23 yrars in the making....

 

[493 Mike]

I like the extra deep steel pans, the plain units not the later model TFs. I welded 1/2 a pipe coupling in the angled side for the sensor and use a double throw double pole toggle switch to check trans fluid temp with my Autometer engine coolant gauge (same sensor-as coolant).
Mike

 

[j-c-c-62]

LoL, I love how j-c-c-62 edited my reply in his quote, to fit his narrative.
Nice try trolling me though. "It's all relative anyway".

Go back to reply #7 to get the full jist of what I said. The idiocracy line was
about the design of the pan I purchased, not about fluid running through
cooling lines. Geez!

Sorry if my "editing" triggers your empty "trolling" reply. I just felt it best cut out all the worthless fluff in your reply in #7 and focus on the real issue.
I did that. It obviously hit a nerve. Truth hurts sometimes.
You appear not to be concerned with cooling the trans fluid or easily monitoring the likely most heated trans fluid, you and others are concerned with where to install a sender and can't accept that that task is ultimately "relative" as it does nothing to help change the outcome of the working trans fluid.
You have a right to feel tinged, but that is not my problem or decision here.
Whatever path you take, I really don't care much. My effort here is helping those on the sidelines make their own reasoned based decision(s).

 

[1STMP]

I'm easily convinced, front of the Moroso pan it will go then.



I have read that outgoing cooling lines aren't the best either, because little fluid runs through
them. Where the pan has most of the fluid being recycled through the trans over and over.

I just dislike the fact that these manufactures copy each others designs. If one has a bad
design, they all copy that same bad design and we the customers are stuck with 20 pans
with temperature ports all in the front. Just a little forward thinking and we might get a pan
with ports in the back, where the fluid is forced when you accelerate, or going up inclines.
I guess Idiocracy is alive and well. LoL!


Thanks for your help guys.

Uphill/downhill/acceleration....
The pan has fluid in it at all times..
The pump insures this. I wouldn't
be worried about this much.
When was the last time you've seen
a cratered trans pan?
Thousands of off road vehicles run
these tests every single day.
There's other items under there that
will clear the path of obstruction.
Regular street use will pose no
problem.
How many low riders see transmission
failures when they're dragging their
***?

 

[1STMP]

@j-c-c-62
Is correct. Most opt to place the
sensors in the pan. Sensors in
the lines require extra maintence
but still work. In the lines creates
more potential for leaks/failures.
But the goal is for the gauge to
read relative trans fluid temps.
Let's not be getting down on
anyones' suggestions.
Could be they've come up with
a solution to fix the problem.
The goal here is to help, not hinder.

 

[dvw]

My street car has had the sensor in the line for over 20 years, works fine. My racecar has one in the pan. We usually weld an arbritary location in the pan thinking about wire routing vs exhaust. The only spot that I've used that was wrong? Locating the bung to close to a pan bolt. This caused socket interference to the sensor during pan installation. I personally don't worry if it's at the front, side, or rear of the pan. We've even drilled and tapped the drain plug. Works fine as well. A thought about the sensor located in the return line. The fluid is the hottest as it returns out of the forward cooler line. As the converter fluid directly exits there. Actual operating temperature in the pan is a closer number. As I've mentioned before there is no need to run an expnsive pan unless you want the look of the heavy cast aluminum pan. These pans with the addition of a temp bung are powder coated, thick material, and deep. Perfect at $26.99
https://www.amazon.com/dp/B09RZHM1WJ?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0
Doug