Trans Cooler question
03-13-2005, 07:21 PM
#23
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am i sure you're sure that you're sure? Yes, i'm confused.
I did this install today and i think i am wooried about nothing.
My problem is in regards to symantics.
1. I connected the tranny return line out of the top of the radiator to the top line from the cooler.
2. I connected the tranny return line going to the tranny to the bottom of the cooler.
I did not delete the stock cooler nor cut the supply line in any way.
HERES MY QUESTION:
When i did a feel test, the temp of the supply line is very cool to the touch as compared with the return line. IS THIS BECAUSE THE FLUID IN THE RETURN LINE IS RETURNING TO THE COOLER? Or is the fluid in the return line traveling back to the tranny. Naming the "return line" as such made me think the fluid was returning to the tranny but the touch test makes me think other wise. This may help other novices like myself. Just putting arrows on that picture of the lines lying on the work bench on the "transmission R&R" page would suffice, thanks.
DOES ANYONE HAVE A FLUID DIAGRAM SHOWING PATH OF FLUID SO I CAN QUIT TYPING IN CAPS?
I did this install today and i think i am wooried about nothing.
My problem is in regards to symantics.
1. I connected the tranny return line out of the top of the radiator to the top line from the cooler.
2. I connected the tranny return line going to the tranny to the bottom of the cooler.
I did not delete the stock cooler nor cut the supply line in any way.
HERES MY QUESTION:
When i did a feel test, the temp of the supply line is very cool to the touch as compared with the return line. IS THIS BECAUSE THE FLUID IN THE RETURN LINE IS RETURNING TO THE COOLER? Or is the fluid in the return line traveling back to the tranny. Naming the "return line" as such made me think the fluid was returning to the tranny but the touch test makes me think other wise. This may help other novices like myself. Just putting arrows on that picture of the lines lying on the work bench on the "transmission R&R" page would suffice, thanks.
DOES ANYONE HAVE A FLUID DIAGRAM SHOWING PATH OF FLUID SO I CAN QUIT TYPING IN CAPS?
03-13-2005, 10:00 PM
#24
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the hotter of the two lines is the supply from the trans. easy enough. so in rad from trans, out rad to cooler, out cooler to trans. usually the supply from trans is under more pressure. so it would have a crimped fitting instead of a clamp. i noticed the clamped one goes to the top of the rad. which confused me why they would go bottom from top in the rad.
03-13-2005, 10:35 PM
#25
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Originally Posted by mrr23
the hotter of the two lines is the supply from the trans. easy enough. so in rad from trans, out rad to cooler, out cooler to trans. usually the supply from trans is under more pressure. so it would have a crimped fitting instead of a clamp. i noticed the clamped one goes to the top of the rad. which confused me why they would go bottom from top in the rad.
HOWEVER, the crimped line is cooler to the touch. This is on a 98 TA so i know i hooked it up to the same lines as yall. I have not had it down of the rack yet, i was checking for leaks and let the car heat up till the thermostat opened and the dash rad. temp gauge was reading 170ish. i can't figure out why the supply line is cool, and the return line is hot because im pretty sure i didnt hook it up backwards. Cooler is hayden and does not have a check valve or directional input as far as i know (nothing in manufactures instructions regarding such.)
Could it just be that without actually driving the car, im not seeing the temp on the supply line? just heat transference from rad to return line? I figured return line would be cooler than supply line even allowing the car to idle up and shifting through gears on the rack...
03-13-2005, 10:40 PM
#26
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regarding supply line to bottom and return line out the top, i figure it has to do with pressure and gravity. if the supply line went in top, it would stand to reason the the higher pressure would result in the fuild passing more quickly through the cooler thanks to gravity, thus reducing cooling. supply line at the bottom would mean the pressure has to push the fluid uphill so it would take longer to pass through stock cooler, thus longer fluid/fluid heat sink values.
03-13-2005, 10:42 PM
#27
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here's a deinite way to determine supply line. take them off and see which one spits out at you. but again the hotter one is the supply. currently my trans is out or i'd verify the direction. i didn't check. i just went by crimped vs clamped line. but i bypassed the rad anyway.
01-06-2011, 12:31 AM
#28
Resurrecting from the dead Please Need answer But if this is true I would like to know why is this necessary? What is the risk if the cooler is being blasted with cold air while cruising down the road?
Bottom line is I'm trying to understand if anyone has any solid data to back up issues where the cooler is overkill in this scenario such that it would be a detriment to the life and or proper function of the trans.
Kind regards,
Matt
01-08-2011, 02:08 PM
#31
Miss conceptions about the 4L60E 4L80E
5- TRANS Fluid can get to cold and gel at subzero temps.
No it can’t at least not at any temperature where people can live. Think of it this way if it could then in Canada or Alaska the fluid would be gel in the pan in the morning on start up and would wipe the pump out immediately. I have poured fluid from a bottle at -5 degrees and while it’s just a little thicker it’s certainly not gel. Transmission fluid is made to have a very stable viscosity at all temperatures. I am sure like all liquids there is a temp where this could occur but none I have seen.
5- TRANS Fluid can get to cold and gel at subzero temps.
No it can’t at least not at any temperature where people can live. Think of it this way if it could then in Canada or Alaska the fluid would be gel in the pan in the morning on start up and would wipe the pump out immediately. I have poured fluid from a bottle at -5 degrees and while it’s just a little thicker it’s certainly not gel. Transmission fluid is made to have a very stable viscosity at all temperatures. I am sure like all liquids there is a temp where this could occur but none I have seen.
