[oldfatman7]

Hello everyone!
I just had the transmission rebuilt (e4od) in my f350 and am getting ready to slide it up under the turck and thought I would ask your advice on hooking up the new transmission. I just ordered a new tru cool 4739 trans oil cooler. Several people have said to just use it , toss the one that is on the truck and bypass the radiator all togeather. I live in norht georgia and we sure don't have the winters that some of you do but we still see a lot of sub freezing temps in the winter. Do you guys think the trans will heat up quick enough on start up without the added heat from the radiator? Also my trans oil lines had been cut and hose clamped on to it to add the old trans cooler. Can I just use a good oil hose to plumb the trans that I'm putting in the truck or would it be better to buy metal lines?
Thanks for your thoughts and suggestions.
Dan
Any other advice on hooking up a rebuilt e4od would be great

 

[craiggo]

Run out and buy this months issue of Trailer Life. There is a kick-butt article on just this topic. It STRONGLY suggests to NOT bypass the radiator. Use the radiator and add another which will drop temps even more. I did this (prior to this article) and found it brought my tems down about another 5 degrees. I was able to place my added trans cooler just to the side of my main radiator on the pass side right up front. 50-60% of trans failures are dure to heat.

Again, get your hands on that issue....there is actually 2 good articles. If you can't find it, email me and I'll fax it to you.

Craig

 

[DLSF350]

I have a tru-cool in my truck, plumb it after the fluid has passed through the radiator. If it was a gas motor (220*+ coolant temp) i would bypass it, but I have yet to get near that high towing a 10,000 lb trailer with my diesel in your neck of the woods. I didn't run mine through the rad for cold weather (even though it gets below 0 on occasion) use but to get the fluid just a little cooler. I used the rubber lines that came with the kit (they looked like top quality lines). two pieces of steel 1/8" x 1" flat stock run from the top of the rad support to the bottom rad saddle and hang the trans cooler right in the airstream through the grille. I would definitely can the factory aux cooler- it looked like a power steering cooler on my GM truck. Make sure the FIPL is adjusted correctly and check out a shift kit or something called a pressure booster for the truck. The line pressure is too low on most rebuilds for HD use.

 

[bsays]

I bypassed my rad trans cooler when I installed my rebuilt tranny,I also installed 24000# rated trans cooler. The rebuilder said I had to have the rad cooler professonialy cleaned and flushed or bypassed altogether for my warrenty to be good. Haven't seen temps above 160, I'm happy so far.

 

[oldfatman7]

Thanks for the input so far, What do you guys think of flexable oil line for the transmission and skiping the radiator, The rebuild shop said to have it cleaned and the best deal I have found was $95 and that is with me taking it out. I guess I could try to flush it out myself and put an inline filter on the truck. What do you think?

 

[DLSF350]

My trans guy gave me a can of trans cooler flush- looked like a big can of fix a flat with threaded end on the hose, he suggested using it at the cooler fittings on the trans to make sure it cleaned everything. It is a trade brand that I haven't seen retail. FYI, it made a mess even with a big drain bucket, but the system was clean. He said all kinds of garbage gets caught in the cooler and the converter when these trans get burned up. It sounds like you should just bypass the radiator to make life easier. Try giving these guys a call they supply most trans rebuilders in the US. They may sell retail or direct you to a store with cooler flush.

Transtar Industries, Inc.
Robert Furney - Division Manager
5238 Royal Woods Parkway, Suite 110
Tucker, Georgia 30084
Phone: 770-491-6055
Fax: 770-491-0547
Toll Free: 800-241-8524

http://www.lifeautomotive.com/Products/ATI2001.asp

http://www.rallyecatalunya.com/car46250-Z.html

 

[oldfatman7]

Do you think it will be fine to go with a rubber transmission rated oil line or would it be better to have metal lines. The old lines were not worth saving.
Dan

 

[dbennett48]

You had better go with metal lines to save you future problems. Heat and the oil will eventually break down the rubber hoses. Been there - done that.

Dave

 

[perryg114]

I believe that a trans filter is a good idea when putting a rebuilt transmission in. This keeps any crud in the lines from killing your new transmission. Put it on the return side of the line. Metal lines are better and they won't break down and leak. Also they won't leave little bits of rubber in your transmission. Small sections of rubber are ok just double clamp and inspect often. I am sure someone knows the type to use. They were real popular with this bunch not long ago.

Perry