AOD Tranny Temps???

[monte87]

Greeting sguys-

I need opinions regarding Tranny temps??????, What should i expect???? on the Trans temp gauge of my 1991 AOD with a 3000 stall converter, Trans-Go Shift Kit, 4.10's and a B&M deep sump pan adding 3 quarts of Pennzoil Mercon V. Also mind you-I have an additional Derale Trans-cooler 25,000GVW and the in-Rad (fluidyne) cooler helping out.
Whatta ya think????????????

Thanks Anthony

 

[kbeefy]

I don't know what you should see, but the derale cooler is good. Some people say that a bigger pan isn't neccesarily good, and your fluid will cool better if it makes more trips to the cooler and less time sitting in the pan. As I recall, 230+ is really bad, 200+ is not good but ok for short periods, and 180-200 is the happy spot for your tranny.

Really it's your fluid your worried about, when it starts breaking down you'll have issues. One of the fluid manufactuers has a chart on fluid life vs temp... fluid life dropped drasticaly with increased temp. I'll try to find it...

 

[kbeefy]

quote: As a rule of thumb, every 20 degree increase in operating temperature above 175 degrees F. cuts the life of the fluid in half!

According to the Automatic Transmission Rebuilders Association, 90% of ALL transmission failures are caused by overheating. And most of these can be blamed on worn out fluid that should have been replaced.

from here...

http://autos.yahoo.com/maintain/repairqa/transmission/ques123_0.html

 

[monte87]

Hey man-

Thanks for the 411 and link-Tremendous 411. Greatly apprecioate your help bo.

Later Anthony

 

[BullittAndy]

Greeting sguys-

I need opinions regarding Tranny temps??????, What should i expect???? on the Trans temp gauge of my 1991 AOD with a 3000 stall converter, Trans-Go Shift Kit, 4.10's and a B&M deep sump pan adding 3 quarts of Pennzoil Mercon V. Also mind you-I have an additional Derale Trans-cooler 25,000GVW and the in-Rad (fluidyne) cooler helping out.
Whatta ya think????????????

Thanks Anthony

Between 160 and 200 depending on traffic but please post back with actual numbers. I cooked a tranny from towing, temp went to 250.

 

[UnderdogGN]

wow i was just about to post this exact thread. I just put a temp guage for the trans in my car. I have a 3000 non lock stall, shift kit, deep finned pan, and a b&m supercooler. The temps were way lower than i figured??? On an 80 degree day the highest temp i saw was 165 on the highway. It went back down to around 155ish off the highway. My temp sender is located in the trans pan also.
I thought that was pretty good considering the 3000 stall in a heavy convertible.

 

[monte87]

wow i was just about to post this exact thread. I just put a temp guage for the trans in my car. I have a 3000 non lock stall, shift kit, deep finned pan, and a b&m supercooler. The temps were way lower than i figured??? On an 80 degree day the highest temp i saw was 165 on the highway. It went back down to around 155ish off the highway. My temp sender is located in the trans pan also.
I thought that was pretty good considering the 3000 stall in a heavy convertible.

hey guys-
thanks for the reply as well. I installed the Autometer phantom tranbs gauge, using the B&M set up. I cut the low pressure line (Bottom line on AOD's) and installed a 5/16's brass T with a 1/8 adaptor for the sender. B&M stated that set up is more accurate than an in the pan set up.
I ave been watchin the gauge lately and my temps cold to warm up usually stay 150-170, and just this sunday in about 70 degree weather in major traffic-she climbed all the way to 180 but never went above it. I was also shocked at the low temps, I thought somehting was wrong with the sneder location-So i called B&M and they reaafriemd they are correct with mys et up and all the compnenets. So i would say its about 150-170 moving, highway driving, light to light aslong as air is moving across the cooler, once you start to sit for a long period of time-It climbs. This has been my observation of about 3 weeks of driving after the install.

Hit me back with any other thoughts or experiences.
Thanks Anthony

 

[monte87]

B&M stated an in the pan location is the heat soaked and the brass T off the low return line is more accurate, i didnt understand that??? because-You would want the hottest point, not the line to the cooler But he recommended that set up, Sop i followed.
Anthony

P.S. Brass T set up goes to the "RETURN LINE" On the AOD's which is the lower line to the cooler.

 

[HISSIN50]

The hottest fluid is that being shuttled to the cooler. That's where my sender is as well.

Now if the confusion regards that you think you have your sender located after the fluid has gone through the heat exchanger, I see your point. AODE's have the lines backwards from AOD's. I wonder if that could have been a point of confusion when talking to the trans folks.

FWIW, your temps look good. When it's hot outside, your heat exchanger should be *heating up* your trans fluid, not really cooling it. The stock exchanger is for temp regulation, not absolute cooling. That's where your aux cooler comes into play.

Good luck.

 

[monte87]

The hottest fluid is that being shuttled to the cooler. That's where my sender is as well.

Now if the confusion regards that you think you have your sender located after the fluid has gone through the heat exchanger, I see your point. AODE's have the lines backwards from AOD's. I wonder if that could have been a point of confusion when talking to the trans folks.

FWIW, your temps look good. When it's hot outside, your heat exchanger should be *heating up* your trans fluid, not really cooling it. The stock exchanger is for temp regulation, not absolute cooling. That's where your aux cooler comes into play.

Good luck.

Thanks for the 411.
Anthony