4R70W Temps and Cooler

[chuck1022]

You are thinking about pirate, folks on here are 98 percent good.

You are right. I used to frequent a firearms forum that would get rough at times. A lot of misinformed ideas draped in racism...anyways....always had great experiences here.

 

[badandy73]

Back to trans temps, I don't remember mine climbing much past the 150's, but it's been a while since we've had warm weather where I'm at. Running a Tom's aluminum 5.0 radiator with cooler and then through a secondary stacked plate unit I had previously with the C4.

 

[ntsqd]

he E40D also has almost a gallon more of transmission fluid and can handle about 400ft/tq stock. It is a Savage of a transmission.

It is also behind a 5.8L in a heavier vehicle than an EB, and was offered only as a sample point.

 

[rocknhorse76]

Just put one of these in front of the radiator, and you’ll never have issues with heat.

https://www.amazon.com/dp/B00803CTDA/?tag=classicbroncos-20

 

[fordguy]

Just put one of these in front of the radiator, and you’ll never have issues with heat.

http://[URL]https://www.amazon.com/dp/B00803CTDA/?tag=classicbroncos-20

[/URL]

In addition to radiator cooler? No problems with air flow to a/c coil

 

[bronco italiano]

It is also behind a 5.8L in a heavier vehicle than an EB, and was offered only as a sample point.

No disrespect meant ntsqd.
I think the E40D is Fords very best HD transmission and am in awe at how large it is!!! My buddy had one on his F150 and I never seen an auto trans so big/burly.
Wish they are built that heavy duty

 

[Broncobowsher]

No disrespect meant ntsqd.
I think the E40D is Fords very best HD transmission and am in awe at how large it is!!! My buddy had one on his F150 and I never seen an auto trans so big/burly.
Wish they are built that heavy duty

Since we are on the sideline here, the E4OD is really just a C6 with an overdrive in front of it. And like most of Ford's transmissions from the 90's and newer, they just started throwing more and more upgrade parts at it from the factory. The early ones were not that good, neither were the first years of the AOD. The AOD got improvments, and a lot more when it went to the 4R70W, and even more through the life of the 4R70W. The E4OD went through the same thing, mostly. The number of planet gears went up. There was that bad idea of the mechanical diode. Which is odd because that is an upgrade for the 4R70W platform of transmission. But in the E4OD it was a failure point that wasn't used but for a year or two.

I've owned one C6, it was behind a big block, and it was bone stock. I found it a very impressive transmission. The shifts were very gentle. Not prolonged, but not a kick either. And part throttle driving the shifts were matched to the convertor so well, the tach barely twitched as it went through the gears. Even though it was in a truck, you could tell this was teh same as you would get in one of the big luxury cars of the 70s. The only time it every acted wonky was a near full throttle pull where it was wavering in and out of kickdown. That wasn't nice to the clutches. I then changed the kickdown so it was either on or off, none of that floating between nonsense.

 

[bronco italiano]

Since we are on the sideline here, the E4OD is really just a C6 with an overdrive in front of it. And like most of Ford's transmissions from the 90's and newer, they just started throwing more and more upgrade parts at it from the factory. The early ones were not that good, neither were the first years of the AOD. The AOD got improvments, and a lot more when it went to the 4R70W, and even more through the life of the 4R70W. The E4OD went through the same thing, mostly. The number of planet gears went up. There was that bad idea of the mechanical diode. Which is odd because that is an upgrade for the 4R70W platform of transmission. But in the E4OD it was a failure point that wasn't used but for a year or two.

I've owned one C6, it was behind a big block, and it was bone stock. I found it a very impressive transmission. The shifts were very gentle. Not prolonged, but not a kick either. And part throttle driving the shifts were matched to the convertor so well, the tach barely twitched as it went through the gears. Even though it was in a truck, you could tell this was teh same as you would get in one of the big luxury cars of the 70s. The only time it every acted wonky was a near full throttle pull where it was wavering in and out of kickdown. That wasn't nice to the clutches. I then changed the kickdown so it was either on or off, none of that floating between nonsense.

My mom's '66 Lincoln had a 462 with a C6, very smooth trans

 

[rocknhorse76]

In addition to radiator cooler? No problems with air flow to a/c coil

I don’t run mine through the radiator, but it would work fine that way. Can’t say as to the a/c condenser, but I have no issues with airflow to my radiator. My 408W runs at 195 degrees year round and my transmission never overheats.

 

[toddz69]

Just put one of these in front of the radiator, and you’ll never have issues with heat.

http://[URL]https://www.amazon.com/dp/B00803CTDA/?tag=classicbroncos-20

[/URL]

Just got mine installed last weekend - just doing a few test runs now. I'm hoping to do some real testing in the next few weeks.

Todd Z.

 

[fordguy]

Just got mine installed last weekend - just doing a few test runs now. I'm hoping to do some real testing in the next few weeks.

Todd Z.

You run a/c? It is humid here in the south, I have no doubt the cooler will work, more concerned with airflow to my a/c.

 

[toddz69]

You run a/c? It is humid here in the south, I have no doubt the cooler will work, more concerned with airflow to my a/c.

I don't - just sweat it out here in Phoenix.

Todd Z.

 

[davisjstone]

Just got mine installed last weekend - just doing a few test runs now. I'm hoping to do some real testing in the next few weeks.

Todd Z.

Todd, any chance you can post a picture of how you installed it.

 

[davisjstone]

No to hijack, but...

I have a Hayden 689 (11x11 x0.75) stacked plate in front on my radiator that I plan to use. I have the reverse flow champion radiator so not using the radiator cooler as it's on the wrong side.

Do we think this will suffice, or should I add a derale fan coolers under the passenger area for added cooling? Or other recommended setup? Street driving only.

I have it plumbed without a thermostat/bypass. In doing research, seems like some suggest using a thermostat bypass like this one which send the trans fluid to the cooler when temp reaches 180, is this necessary, or overkill?

 

[ntsqd]

What will work and what won't is pretty dependent on how you're going to use the truck and where you're going to use it.

I have suggested the t-stat in past. In particular for use in areas that get really cold when an Aux cooler is used with the radiator cooler. Use it to by-pass the Aux cooler when it is cold. As cold as the desert can get, I wouldn't bother with one if exclusively used in the desert. Same for if only driven on the street during warm days.

You do want the trans to warm up some. What I was told decades ago by a locally well respected trans guy was at least 160°F as he felt that was the minimum required to drive any condensation out of the ATF and to get the fluid flowing well enough to prevent undue wear. Although, I'll take too cold over too hot any day, and twice on Sunday.

 

[klcornett]

I'm running the Champion reverse flow radiator as well. I have my transmission lines routed thru the radiator cooler and then thru the stock Explorer cooler. Driving today in low 70s temps for 3 hours or so, my temp ran between 127 and 131 degrees. I'm pulling my temp from the OBDII which obtains it from the stock 4R70W location in/near the valve body. I haven't had the chance to run in warmer temps.

 

[toddz69]

Todd, any chance you can post a picture of how you installed it.

Here's a hodge podge of pics that I took a few weeks ago when I was installing it. Some show the cooler install and some show some of the pieces I installed to help direct airflow through the radiator. I used two universal strap pieces on top that came with the cooler. They're attached to the cooler with 1/4-20 bolts and nutserts and the top of the brackets are bent and attached to the top of the core support with the same size bolts and outserts.

For the bottom, I bent a piece of aluminum that mounts to the bottom of the radiator opening with the same fasteners and nutserts and then catches the lower cooler tabs and fastens with the same fastener scheme.

Todd Z.

 

[ZOSO]

I'm running the Champion reverse flow radiator as well. I have my transmission lines routed thru the radiator cooler and then thru the stock Explorer cooler. Driving today in low 70s temps for 3 hours or so, my temp ran between 127 and 131 degrees. I'm pulling my temp from the OBDII which obtains it from the stock 4R70W location in/near the valve body. I haven't had the chance to run in warmer temps.

Be known that the trans cooler is on the hot side of the radiator in the reverse outlet radiators. You are effectively adding heat to the trans with the hot water from the engine then trying to cool it off with the secondary cooler.

 

[Broncobowsher]

Be known that the trans cooler is on the hot side of the radiator in the reverse outlet radiators. You are effectively adding heat to the trans with the hot water from the engine then trying to cool it off with the secondary cooler.

Not always. Yes, the Champion reverse radiators are flawed in the cooler is on the hot side of the radiator.
But the fluid coming into the cooler is coming out of the convertor. The hottest fluid in the transmission. If you are working the convertor hard, you might be making fluid hitter than the radiator in temp. In which case you will get a small amount of cooling.

But for the most part, correct. Don't get that much cooling with that radiator setup. Still good, just not the best. Running the oil to air after is good in this case as you can take out the extra heat that the in radiator missed or even put in.

 

[klcornett]

Be known that the trans cooler is on the hot side of the radiator in the reverse outlet radiators. You are effectively adding heat to the trans with the hot water from the engine then trying to cool it off with the secondary cooler.

Thanks, I am aware. I went back and forth on running this configuration but came to the conclusion as Broncobowsher stated some cooling when at heavy load coupled with the external cooler may be enough. I will find out this summer for sure.