Rear Auto Trans Oil Cooler *Update*
08-03-2003, 04:04 PM
#1
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Rear Auto Trans Oil Cooler *Update*
I just finished some computer work for a Audi/BMW/Mercedes repair shop... One perk, use of a lift!
So, here are some new and improved pics for those interested.
I've gone about 2000 miles since the install. I removed the factory hard steel lines, which cleaned up/simplified the underbody nicely.
Recent 95f+ outside temps showed 168f - 172f pan temps (with an infra-red thermometer).
I never installed the screen I made for it, and it has not collected any debris or sustained any damage.
(This would have made a mess though!)
No leakage. The oil stains shown are from the engine!
Front:
Side:
Rear:
Detail:
View from front:
Overall dims of the cooler are approximately 13" wide (including mounting tabs), 3" tall, 2" thick.
*Update*
~thread~start~
So, here are some new and improved pics for those interested.
I've gone about 2000 miles since the install. I removed the factory hard steel lines, which cleaned up/simplified the underbody nicely.
Recent 95f+ outside temps showed 168f - 172f pan temps (with an infra-red thermometer).
I never installed the screen I made for it, and it has not collected any debris or sustained any damage.
(This would have made a mess though!)
No leakage. The oil stains shown are from the engine!
Front:
Side:
Rear:
Detail:
View from front:
Overall dims of the cooler are approximately 13" wide (including mounting tabs), 3" tall, 2" thick.
*Update*
~thread~start~
Last edited by PorKen; 09-19-2003 at 02:34 PM.
08-05-2003, 12:23 AM
#2
Burning Brakes
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Looks good! Its only a matter of time before a rock comes bouncing through it, I would put an aluminum mesh around it so you dont blow your tranny on the chance that it happens to get a damage leak. Where did you get your parts and what is the parts list? Ive got an 86' auto and might change it over too.
08-05-2003, 01:12 AM
#3
Three Wheelin'
Porken, I'm right behind you on this one, I will most likely start this winter.
Why not use your stock cooler in line with the new one? Was there a reason you needed to lose the factory cooler?
Just wondering what you train of thought was
How cold is to cold?
I was also, thinking about adding an external spin-on trans filter and a gauge. But have not determained what side to install yet (output or inlet side).
Why not use your stock cooler in line with the new one? Was there a reason you needed to lose the factory cooler?
Just wondering what you train of thought was
How cold is to cold?
I was also, thinking about adding an external spin-on trans filter and a gauge. But have not determained what side to install yet (output or inlet side).
08-05-2003, 01:18 AM
#4
USMarine
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Originally posted by Warren928
Looks good! Its only a matter of time before a rock comes bouncing through it, I would put an aluminum mesh around it so you dont blow your tranny on the chance that it happens to get a damage leak. Where did you get your parts and what is the parts list? Ive got an 86' auto and might change it over too.
Looks good! Its only a matter of time before a rock comes bouncing through it, I would put an aluminum mesh around it so you dont blow your tranny on the chance that it happens to get a damage leak. Where did you get your parts and what is the parts list? Ive got an 86' auto and might change it over too.
Porken in your case I think he means CHICKEN WIRE!
Just ribb'n ya
08-05-2003, 03:03 AM
#5
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I thought I was safe on this one... dropped to the second page without a reply!
Warren928, T_Max - here's the original thread with all the info: Link: Rear mount auto trans cooler installed!
Here's the gist of the thread...
All 4 flex hoses were leaking.
Aeroquip fittings are supa'kewl.
Rationalizes synthetic ATF purchase.
No additional heat input to engine coolant.
No danger of coolant trashing the bands/clutches.
Transmission oil operates at 160f versus 200f+ of engine coolant, extending fluid/trans life.
A couple of horsepower saved, not pumping 30W oil 20 FEET through 10mmID pipe, 5mmID hoses, and banjo fittings.
The main advantage, to me, is the AT fluid is thicker (colder), so the torque converter slips less, and more power goes to the ground. Acceleration is much more immediate (vs. a hot transmission). Also, there is no delay selecting a gear the first time, when starting cold.
DoubleNutz - Gotta luv that chicken wire...
Here's the gist of the thread...
All 4 flex hoses were leaking.
Aeroquip fittings are supa'kewl.
Rationalizes synthetic ATF purchase.
No additional heat input to engine coolant.
No danger of coolant trashing the bands/clutches.
Transmission oil operates at 160f versus 200f+ of engine coolant, extending fluid/trans life.
A couple of horsepower saved, not pumping 30W oil 20 FEET through 10mmID pipe, 5mmID hoses, and banjo fittings.
The main advantage, to me, is the AT fluid is thicker (colder), so the torque converter slips less, and more power goes to the ground. Acceleration is much more immediate (vs. a hot transmission). Also, there is no delay selecting a gear the first time, when starting cold.
DoubleNutz - Gotta luv that chicken wire...
Last edited by PorKen; 08-05-2003 at 05:51 PM.
08-05-2003, 04:34 PM
#6
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T_Max - I did some quick research online, and I think I'm going to put one of these:
3/8" Magnafine inline filter, <$20.
It seems the pan filter only filters large particles, so many places recommended an additional filter for smaller particles and varnish.
It will help keep internal debris out of the cooler too.
3/8" Magnafine inline filter, <$20.
It seems the pan filter only filters large particles, so many places recommended an additional filter for smaller particles and varnish.
It will help keep internal debris out of the cooler too.
08-05-2003, 05:04 PM
#7
Nordschleife Master
Question.
Would it be at all worth while to put a cooler on a mannual transmittion?
I know Porsche didn't,and while I usualy accept they did it right, I want to know WHY they did it right.
I know the transmittion gets rather warm, rather quickly. I do alought of hit weather driveing. I was thinking keep the oil cooler, keep it thicker, and thus keep the bearings happyer. I was also thinking it would keep the syncros happyer, but...
I figured I could run one line from the drain plug, to a small electric tempeture controled pump, to a coolers, and then back to the fill plug. Throw a filter infrount of the pump.
It might be helpful, but then again, it might be excess weight, hum...
Would it be at all worth while to put a cooler on a mannual transmittion?
I know Porsche didn't,and while I usualy accept they did it right, I want to know WHY they did it right.
I know the transmittion gets rather warm, rather quickly. I do alought of hit weather driveing. I was thinking keep the oil cooler, keep it thicker, and thus keep the bearings happyer. I was also thinking it would keep the syncros happyer, but...
I figured I could run one line from the drain plug, to a small electric tempeture controled pump, to a coolers, and then back to the fill plug. Throw a filter infrount of the pump.
It might be helpful, but then again, it might be excess weight, hum...
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08-05-2003, 05:37 PM
#8
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VU - the last few MY's manual transmissions have an internal pump.
The pump sends the oil out for cooling and also sprays oil onto the gears.
11 - pickup
12 - pump
13 - rear cover
The pump sends the oil out for cooling and also sprays oil onto the gears.
11 - pickup
12 - pump
13 - rear cover
