SLEE Under Hood Compressor kit concern

[Area 51]

Looking at the two finned for cooling modules, i am concerned about killing what Toyota clearly intended for extra vertical convection cooling.
Don't know what the modules do yet but they are both going to get significantly hotter with the SLEE kit mounting and relocation.
Rethinking the compressor plan.

 

[JustinHEMI]

I simplified my plan, I grabbed one of these units and wired their quick connect wire kit to the rear battery.

After looking at all the "on board" options, I realized I don't "need" on board air, especially at the price involved.

YMMV.

https://www.amazon.com/dp/B0DK2MXQ7D?tag=landcruiserforum-20

 

[Area 51]

Another good way to go for flats and just getting going quickly with no spare change is a Power Tank. going to carry one of these for a while with an ARB fix kit, this has worked well in the past.

Power Tank Online Store and Blog

Power Tank is the ultimate on-board and mobile air system for performance, versatility, and reliability and your source for all air related accessories.

powertank.com

 

[EOD Guy]

Power Tanks are great...... except for the space they take up. I used one for years to power my train horns.

 

[Area 51]

Not far form me will try to go see them tomorrow.
This looks good as a short term fix,.

Crossover Tire Air-Up and Repair Kit with Mini Power Tank CO2 Air Source

You don't need a crazy suspension system or huge tires to do some overlanding but you do need the proper equipment to do it safely. We have created the Crossover Tire Air-Up and Repair Kit to extend the capabilities of your stock vehicle for when you do decide to take the path less traveled...

powertank.com

 

[EOD Guy]

I'd find out where you can get the tank refilled, before I purchased.......... I had an issue getting some tanks filled.

 

[sleeoffroad]

Looking at the two finned for cooling modules, i am concerned about killing what Toyota clearly intended for extra vertical convection cooling.
Don't know what the modules do yet but they are both going to get significantly hotter with the SLEE kit mounting and relocation.
Rethinking the compressor plan.

We were concerned with the heat build-up as well. That is why we opted with the compressor on top of the ECU vs. underneath it.

We ran temperature test with the bracket installed alone and then with an ARB on the mount and running with the air outlet open so it ran continuously. This was on a day where the ambient temp was around 60 degrees. We will repeat once our daytime temps go up again. We had one probe on the ECU and a 2nd on the Transmission ECU. Those are the two components that are relocated. All this was done with the engine running and hood closed.

Below is the graph of the data. As one expects that temp went up since the motor is running however there was no drastic spike of the temperatures on the ECU and Transmission ECU with the ARB compressor running for a full 30 minutes.

We will do more testing at higher ambient temperatures, but we are not concerned with it.

 

[Area 51]

We were concerned with the heat build-up as well. That is why we opted with the compressor on top of the ECU vs. underneath it.

We ran temperature test with the bracket installed alone and then with an ARB on the mount and running with the air outlet open so it ran continuously. This was on a day where the ambient temp was around 60 degrees. We will repeat once our daytime temps go up again. We had one probe on the ECU and a 2nd on the Transmission ECU. Those are the two components that are relocated. All this was done with the engine running and hood closed.

Below is the graph of the data. As one expects that temp went up since the motor is running however there was no drastic spike of the temperatures on the ECU and Transmission ECU with the ARB compressor running for a full 30 minutes.

We will do more testing at higher ambient temperatures, but we are not concerned with it.

Thx Chris. Surely a good start.
My concern is going through a place like Needles Ca in the afternoon at a high ambient temp, let's say 130f and then seeing what the ECU case temp is. anything fails on either of those two modules would be a warranty violation if the remounting was seen, and get very expensive quickly. The vertical convection cooling of course dies when the module is flat, not sure how much air flow is changed. Thx for your attention and looking forward to good news.

 

[ultane]

I simplified my plan, I grabbed one of these units and wired their quick connect wire kit to the rear battery.

After looking at all the "on board" options, I realized I don't "need" on board air, especially at the price involved.

YMMV.

https://www.amazon.com/dp/B0DK2MXQ7D?tag=landcruiserforum-20

I bought something like that from Costco a few years back.

 

[sleeoffroad]

I am not sure how much Toyota is relying on airflow to cool the ECU. Attached is a photo of the GX550 ECU location. Way more restrictive, closer to the radiator and a lot of airflow blocked. When we drove the vehicle with the bracket installed there was little change in temperature on the ECU with or without the bracket installed.

One thing to remember if you are driving and have the compressor on, it is most likely for lockers (if we ever get ARB"S for it) and then the compressor just runs occasionally. Airing up is probably when it runs the most and we would also recommend opening the hood when doing so. Even in this and other applications.

Also when the new ARB Brushless compressor is available the heat generation from the compressor will be greatly reduced.

Once summer hits we will do more testing with temp measurements under the hood vs. on the ECU to get a better base line, but I am pretty sure Toyota probably designed that ECU to take way higher temps than what we would ever see,