Just trying to get a feel on what the temps SHOULD be for max longevity / reliability. My temps are without towing and med to light loads. The gauge probe is in the trans fluid, reading just above the pan.
Hi Martin.
A great resource is Rodney from Wholesale Automatics in Oz. Do some searchs at the 3FE list here.
http://www.birfield.com/modules.php?name=Archives&p=/archives/html/3FE/ There is much discussion on the A440 and A442, with input from Rodney and around the world.
Below is a direct quote from a post of Rodney's on the 3FE list, in public viewing, so I feel comfortable pasting it over to this site. Search his name and you will find lots of information on that site about temps, fluids, heat, lockups, towing, coolers, etc.
hth's
gb
"Please excuse me but I have answered a very similar question once
before so I hope you don't mind that I cut and past a copy of it
here as it takes some doing to get my mind around it in such a way
that I can answer it with some degree of accurately and you will
have to convert the temperatures to Fahrenheit sorry.
When the lock-up is off the transmission will generate the most
amount of heat. This is something that we test for in most 4 wheel
drives because of the other products that we sell. Most 10th month
1992 and onwards 80 and 100 series will sit around 65c-75c when just
cruising around when not towing, while towing 500-1200kg about 75-
90c, 1200-2000kg about 85-100c, 2000+ 90-110c. If towing in
temperatures 30c plus then add 5c to all of the above temperatures
and if you are in 40c then add 10c instead. But this keeps going. If
your in a head wind add 5c and if you have a V8 conversion, Turbo or
blower kit added then add another 10c on top.
The Earlier A440F transmissions temperatures are much the same but
do run about 15% warmer because of the old torque convertor design.
If fitted with the Extreme Valve Body then you can half the 15% and
if you have the new A440F Extreme Torque Convertor then you don't
need to add anything and just go of the above temperatures. ( The
reason for a percentage is because it's a sliding scale difference ).
I hope I haven't messed with peoples minds here but an honest answer
to this question is a difficult one to put down on paper.
Hope this helps.
Kind Regards
Rodney
Wholesale Automatic Transmissions
www.automatictransmissions.com.au
"
