[oldfatman7]

Thanks for the replys last week on instaling my rebuilt e4od. The trans is back in the truck and a new tru-cool just came in today. I am tossing the old cooler and have decided to by pass the radiator cooler since three shops said to replace it instead of cleaning it, saying it is almost impossible to get all the bits of trash out, (it is only a year old). I have decided to go on and install a trans filter from the tru- cool web site. As I said last week my transmission lines were not worth saving and my question is, Can I put bress fittings with barbed hose ends on them on the transmission and run the hose under the transmission and foward to the filter and then to the cooler up the drivers side of the transmission to get the lines away from the exhaust. I am a little worried about running rubber trans hose that close to the hot exhaust.
Do you think this will be to long of hose and will it affect the pressure or the pump? Thanks, Dan

 

[tim94f250]

I don't think you should do away with the radiator cooler. I don't think just the aftermarket cooler will be enough. What happened to your old tranny? Did it come apart, leaving little pieces in the oil? If that is the case, and you don't want to take a chance on flushing the radiator cooler, I would get another radiator. I don't think the aftermarket cooler can do the job by itself. Tim

 

[DLSF350]

We use nothing but flexible lines on drag race cars, but they are mil spec and covered in steel braid. it will cost about $60-$80 for a 20' length of #6 line (about 3/8 id) and it is rated for up to 250 psi, and 400 degrees. There is no pressure loss with hose that is rated for hot trans fluid that has no sharp bends. yes you can use it with barbed hose ends (double clamped), even though the recommended AN fittings are more durable (and more expensive and a real pain to install for the first time). It is more resistant to heat and abrasion than any other flexible line. I would NOT use 20 feet of plain rubber line for a trans cooler, it may tend to get spongy over time and the fire that could ensue with a few quarts of trans fluid hitting the exhaust make the $60 seem cheap. Barnett's performance in Atlanta stocks a ton of AN line and fittings - ask for keith szabo if he's there. Any good local performance/hot rod shop will have this in stock but may not match the $60 price. Also give LMC truck parts a call - new prebent cooler lines for my suburban were $35. LMC Truck 1-800-562-8782

http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=155699&prmenbr=361

http://www.barnettperformance.com/

http://www.lmctruck.com/truck_catalog_page.htm

 

[oldfatman7]

Tim, Yes the trans came completely unglued, looked like a bomb went off in the fluid. I really dont know about the trans cooler that is built in the radiator. I hate to replace it for I did that a little over a year ago and the radiator on that truck (7.3) goes for 4 to 5 hundred. I have no problem taking it to be cleaned or doing it my self if you guys think it can be done and all the trash removed. Tru-cool said it is fine to just run there cooled, but that is why I am asking you fellows. Have always gotten good advice here

 

[OkieGringo]

For what it's worth...the trans mechanic that FIXED my E4DOA said to diconnect/bypass the radiator cooler in warm climate. It is to raise trans temp faster in the winter so trans shifts better. Seems that if the coolant temps are at 192 or above, that the trans fluid would be kept at 192 ish /ubbthreads/images/graemlins/shrug.gif. Possible need for a summertime bypass valve is indicated. Since my turbo FUBAR coincide with tranny FIX, I haven't really had a chance to see how it really works. It did seem better, but engine wouldn't run with the intake inpeller full of rubber and the screen over the pressure chamber was almost totally blocked with tiny chuncks of rubber and 2 pieces of the impeller blade. LOTSA BLACK SMOKE!!!!!We're going to San diego next Thurs, so new turbo center section and Baumann TCS-E4OD computer and tranny cooler fan should be waiting. Baja

 

[tim94f250]

Well, I would hate to see you burn up your new trans. If they say their cooler should be sufficient, then I guess you should go with that. Do you have a trans. temp. gauge? If not, I'd make sure you get one. I understand not wanting to shell out another $500 for a radiator. Just keep a good eye and nose out for your new trans. Good luck, Tim

 

[Richter69]

I use the v-10 superduty coolers stand alone all the time. I'm not a fan of the radiator cooler, its gets plugged and restricts and any crap in there will never fully flush out. As far as the rad cooler used to heat atf in the cooler months that is a load. The atf will get warmer from the converter before the bottom of the radiator ever has a chance to put heat into the fluid. Ever measure the temp at the bottom of the radiator where the cooler is?

 

[Casey_1]

[ QUOTE ]
It is to raise trans temp faster in the winter so trans shifts better. Seems that if the coolant temps are at 192 or above, that the trans fluid would be kept at 192 ish /ubbthreads/images/graemlins/shrug.gif.

[/ QUOTE ]

Wrong.

The cooler is in the side of the radiator that has the water that has already been cooled. Depending on how hard the engine is working this temp is 50-100° cooler than the water temp heading into the radiator.

The purpose of the radiator cooler is to cool the trans, not warm it in the winter.

Having said all that, in this case I would not use the radiator cooler in that truck. Since the previous trans grenaded, the rad cooler is full of junk. There is no way to get it out, so best case it will put these tiny bits of failed trans back into the new trans, but there is a good case that the rad cooler will plug and completely stop the cooler flow. Then you'll be replacing the new trans.

 

[oldfatman7]

Thanks for all the help,
I ordered the external trans filter today along with a temp guage.
Some people have said to screw it into a hole on the drivers side of the trans, is that right next to the shift linkage?

 

[OkieGringo]

Ok, I stand corrected on the rad cooler. I have a 24k aftermarket trans cooler in front of rad. and a 12" fan coming to put on top. Is this gonna be enough to keep trans cool if I take the rad cooler out of the loop? Baja

 

[bsays]

I have a 24000# rated plate type tranny cooler with the rad cooler bypassed and just got back from a short trip hauling a 7000# trailer through rolling hills and 95 degree + temps, my truck pulled like a champ kept it in OD set the cruise on 55 and never looked back. I never saw the tranny temps get above 150. /ubbthreads/images/graemlins/biggrin.gif

 

[OkieGringo]

[ QUOTE ]
I have a 24000# rated plate type tranny cooler with the rad cooler bypassed and just got back from a short trip hauling a 7000# trailer through rolling hills and 95 degree + temps, my truck pulled like a champ kept it in OD set the cruise on 55 and never looked back. I never saw the tranny temps get above 150. /ubbthreads/images/graemlins/biggrin.gif

[/ QUOTE ]

Thanks LGF, my cooler is not a plate type but is rated at 24k so hopefully it'll be sufficient. Time will tell. Baja