3rd gen deep transmission pan

Hey all I'm not sure if a thread for this has been done, I'm new to the forum and all I could find on this subject was for 2nd gens. I want to put a deeper transmission pan on my 18 Taco, I also plan to add a larger cooler. I will be hauling a smaller enclosed trail to tow my wife and my sport bikes around to different areas across the country to ride. I know this sounds excessive with the larger cooler and deeper pan but I want to do everything I can to keep the trans cool. So I searched everywhere and can not find a company that makes a deep pan for the 3rd gens. I came across a company from the 2nd gen thread called PML. I went to there site PML yourcovers.com. I sent them an email about 3rd pans and they said they have gotten a few people asking and IF they get enough interest they will design one. So if any of you are interested in putting a deeper pan on your 3rd gen Taco shoot them and email. If we can get enough people showing interest I'm sure they will design one..
Take care all.

 

Was it yourcovers.com?

 

Pin the thermostat when towing, if you want max cooling. It’s in the link below how to do it.

adding a large cooler alone doesn’t do much when the thermostat is only open above 195*F.

https://www.tacomaworld.com/threads/3rd-gen-transmission-cooler-upgrade.482280/

 

You might hit up OVTune in the twin turbo thread. I think he has a custom pan option for extra cooling support for his high boost turbo kits. My guess is it won’t be cheap though.

 

Isn't that engine oil?

 

I doubt theres a deep trans pan for a 3rd gen ,but I know Pizza hut has deep pan pizzas

 

You put your wife in the trailer??

 

Savage

 

Doh! Yah, I’m all confused with it being Monday morning and me not at work. LOL.

 

You don't need a deep pan, or pinning the thermostat - that doesn't add cooling capacity but rather increases the thermal buffer. The best option is to actually increase the cooling capacity. Upgrade the tiny factory auxiliary air cooler with a larger cooler, including a fan if you think you need it.

 

please explain how that larger cooler works when the thermostat is closed and no fluid is moving through it?

 

The thermostats work. Pinning is actually detrimental to the operation, especially in winter time.

 

Are you sure a deeper pan is wise in case you ever venture off road?

https://www.tacomaworld.com/threads/automatic-transmission-bashed-in-stranded-in-the-woods.683434/

 

not if you live in a warm climate zone 1-3

All that adding a larger cooler does is open and close the thermostat more often. The thermostat is going to close as soon as the fluid drops to ~195*F and won’t open again until hits ~205-210*F.

with that being said you’ll never see temps lower than that while at operating temp. So unless you pin the thermostat you aren’t really going to cool the fluid sub-190*F and extend the life of the fluid.

my trans fluid stays around 155-165*F even on the hottest days sitting in traffic.

 

The transmission thermostat either directs warmed / bypassed engine coolant to heat the transmission or once warm it directs fluid to the main radiator and then to the aux air cooler. All pining the thermostat does is force the use of the cooling loop, it still uses the same loop with the exact same cooling capacity. While that may lower temps at light engine loads it does nothing for when you need it, climbing a hill with an unlocked torque converter. When you start a long hill, while the fluid temp may be lower to start, with the same cooling capacity it will quickly heat up to the same temperature as if you didn't have it pinned. All that did was create a very small thermal buffer. Deep pans are the same, extra fluid provides more thermal mass but the cooling capacity remains the same. It will still heat up on a long hill just the same.

A better cooler will increase cooling capacity. Add enough capacity and the thermostat can use the extra cooling to maintain the fluid temperature at the same temperature on a long hill as it does on the flats.

 

Because Of course the design engineers have no idea what they’re doing and just picked an arbitrary value for the thermostat with no thought behind it.

 

the same engineers who claim WF is “lifetime fluid” lol ok

heat kills transmissions and lessens the life of transmission fluid, period. There is no getting around that. The transmissions in these trucks already have enough problems (supposedly).

 

Not going to argue on the “lifetime oil” but I bet that’s more the marketing folks than the engineers. Your right, heat can be detrimental, but so can cold. How would your engine do if you kept it 30 degrees below operating temp?

 

I agree with you, but it also doesn’t solve the problem of getting the trans temp below the set point of the thermostat during normal driving.

if you start with cooler fluid before making a long ascent, then the temperature delta is much higher than it otherwise would be, no? Start with 160* fluid, end up at 210* at the peak of the hill, once you are back on flat ground the temp can get back down to 160*. So you have a 50* delta, where you would otherwise have a 15* delta with a pinned tstat.

engineer-splain all you want, but in real world applications the lower the temp (to a certain degree) the better. I understand these trucks have better technology and components than a TH400 from 1968, but I still want to keep my trans as cool as possible to get a longer life out of it.

I live in climate zone three, so even the coldest days (32-34*) I still see 150*F pan temp at operating temp. That’s with the factory cooler.