Tranny coolers

rollingthunder · Jun 19, 2011

Been looking into a bigger cooler for my truck and came across these for the allsion tranny's. For the price of these compared to what I have been finding for the 6.0's they look good. Any thoughts on these?

http://www.transmissioncoolers.us/M...e=T&Category_Code=allison-transmission-cooler

JDub · Jun 19, 2011

The V10 coolers can be fit in the OBS trucks pretty easily, the 6.0 cooler is a little more of a challenge.

Tom S · Jun 19, 2011

I agree on the V-10 cooler for OBS esp if you want to do a intercooler later on down the road. If an intercooler is not in the plans I do not see a reason why the ones you are liking on that link would not work.

Derek@Vision Diesel · Jul 28, 2011

So the v-10 is more than enough for the average truck running a built transmission??? Thats good to know because i have ZERO room for a 6.0 cooler

cowboy_dan · Jul 28, 2011

Strokeorcroak said:
So the v-10 is more than enough for the average truck running a built transmission??? Thats good to know because i have ZERO room for a 6.0 cooler

Aluminum tank 7.3 intercooler, 6.0L trans cooler, and stock A/C & radiator will fit with some work in an OBS. It's really tight, but it can be done.
But yeah, if I didn't already have the 6L cooler, I'd definitely use a V10 cooler.

colonyofdrones · Jul 28, 2011

Anyone tried a cooler/fan combo mounted away from the front of the truck ?

Tom S · Jul 28, 2011

Someone had photos of an expensive setup somewhere. Setrab might have been the brand.

Derek@Vision Diesel · Jul 28, 2011

cowboy_dan said:
Aluminum tank 7.3 intercooler, 6.0L trans cooler, and stock A/C & radiator will fit with some work in an OBS. It's really tight, but it can be done.
But yeah, if I didn't already have the 6L cooler, I'd definitely use a V10 cooler.

Yeah ive got a 6.0 IC and i cant find any room the way ive got it mounted

old man dave · Jul 29, 2011

Derale made several models of fan cooled oil coolers. I think I saw them in the JC Whitney catalog.

I installed a V-10 cooler behind a Banks intercooler and in front of the A/C core. Fits like the factory designed it for the OBS and the brackets fit without modification, just have to adapt the fitting sizes to the OBS lines.

colonyofdrones · Jul 29, 2011

old man dave said:
Derale made several models of fan cooled oil coolers. I think I saw them in the JC Whitney catalog.

I installed a V-10 cooler behind a Banks intercooler and in front of the A/C core. Fits like the factory designed it for the OBS and the brackets fit without modification, just have to adapt the fitting sizes to the OBS lines.

Yeah, I'm currently messing with a flex-a-lite setup w/ 900cfm fan on it. I'm thinking it wont work as good as I originally figured. Although that combined with 3/8" fittings on the trans itself and some decent sized lines might do ok. My main suspicion here is that the fluid might go through too quickly and not get cooled enough while the fan runs continuously.

old man dave · Jul 30, 2011

I think the stock trans fitting size would act as a flow restrictor for the trans fluid, which would allow the trans fluid to remain in the cooler longer for a greater amount of cooldown.

colonyofdrones · Jul 30, 2011

old man dave said:
I think the stock trans fitting size would act as a flow restrictor for the trans fluid, which would allow the trans fluid to remain in the cooler longer for a greater amount of cooldown.

Possibly. The other side of it (in my mind anyway) is that this is a bts trans and it pushes a slightly higher volume of fluid through the pump. At least thats the way I understand it. Stock size is 5/16" which is tiny. If I'm running 3/8" fittings into a cooler that has 1/2" fittings there will be a bit of restriction anyway I would think. We'll see.

old man dave · Jul 30, 2011

I also have a BTS and Brian used to install the V10 coolers but behind the bumper before he went to the 6.0 coolers mounted behind the bumper. He also said that the trans pump determines the amount of oil flow though the cooling system which is also why he dislikes the extra capacity trans pans for the E4OD.

cowboy_dan · Jul 30, 2011

old man dave said:
I think the stock trans fitting size would act as a flow restrictor for the trans fluid, which would allow the trans fluid to remain in the cooler longer for a greater amount of cooldown.

You don't want to restrict flow to, or from, a cooler. While that fluid is sitting there cooling, there's a whole lot more fluid that is NOT in the cooler that SHOULD be, and it's just sitting in the transmission getting heated up.
Now, if you really want to make the fluid stay in the cooler as long as possible, you have to find the cooler with the biggest tubes. The larger diameter the tubes, the slower the fluid velocity will be for a given volumetric flow rate.
But, keep in mind that large tubes are not as efficient at transfering heat. Several small tubes are more efficient than one big tube. If that weren't the case, we'd all be running around with a 12" diameter pipe on the front for a radiator.

Tom S · Jul 30, 2011

old man dave said:
I also have a BTS and Brian used to install the V10 coolers but behind the bumper before he went to the 6.0 coolers mounted behind the bumper. He also said that the trans pump determines the amount of oil flow though the cooling system which is also why he dislikes the extra capacity trans pans for the E4OD.

Are you saying BTS puts a 6.0 cooler in the OBS trucks?

gnxtc2 · Jul 30, 2011

Anyone have pics of a V10 and 6.0 coolers? Also how they have them mounted.

:nopics:

Billy T.
[email protected]

Tom S · Jul 30, 2011

V-10 sized Tru-Cool 4739

Derek@Vision Diesel · Jul 30, 2011

Beautiful Tom, ive got one of those on order right now. Hopefully i can make my install as clean as yours!

bluedge8 · Jul 30, 2011

I just put the tru-cool 4739 on my truck.I put it in series with the other coolers , trans temps went from 190- 210 running empty to never got over 170 pulling the camper . I'd say it's a great option to a 6. oh cooler ,and you could fit it behind the front bumper in front of the intercooler

old man dave · Jul 31, 2011

cowboy_dan said:
You don't want to restrict flow to, or from, a cooler. While that fluid is sitting there cooling, there's a whole lot more fluid that is NOT in the cooler that SHOULD be, and it's just sitting in the transmission getting heated up.
Now, if you really want to make the fluid stay in the cooler as long as possible, you have to find the cooler with the biggest tubes. The larger diameter the tubes, the slower the fluid velocity will be for a given volumetric flow rate.
But, keep in mind that large tubes are not as efficient at transfering heat. Several small tubes are more efficient than one big tube. If that weren't the case, we'd all be running around with a 12" diameter pipe on the front for a radiator.

That's why I said BTS does not like deep trans pans. The pump only circulates a set amount of fluid per time. Ideally, the system is sized to allow the most time in the cooler to get the most heat transferred to air. The same thing happens with water radiators, having a giant radiator does not assure good cooling, a thermostat or orifice is in the system to regulate fluid contact time in the radiator.

The better coolers do not use tubes, they are of stack plate design to alllow the most surface area per volume of oil allowing more heat transfer than the tube designs.

The V-10 cooler has brackets on it that make it a true bolt in proposition without having to fabricate brackets unlike the Tru-Cool.