What would be the best way to bypass the heater core on 4.4L AJV8?

I see the hoses run to the firewall, and I see the T-connectors running down I guess back into the engine - where would I loop back so the coolant keeps circulating?

I know it's a bit weird to ask at the end of October, but where I live there's really no need.

 

Connect the hose going into the the heater core to the one coming out of it.
Use a piece of pipe that fits the inside diameter of the hoses, and 2 hose clamps.
Done.

 

Perfect - that's exactly what I wanted. Cheers.

Out of curiosity, what do the two hoses going down do?

 

I'm not sure, I don't have an LR3, but bypassing a heater core is basically the same on any vehicle.

And, if you get rid of your heat, you may have windshield fogging problems, especially on a rainy day
.

 

Ah, but LR3s can be complicated... I bypassed on a previous Land Cruiser FZJ-80 as it was leaking out of the heater core, and that was one pipe in, one pipe out, so it was easy - but with LR3 there's 4 pipes...

 

The LR3 heater core still only has 2 pipes connected to, and in and an out.
They are the 2 center tubes, and not connected to the 2 outer tubes(where the 4 tubes come through the firewall).

 

Yes, you're right - only two go through the firewall. Those are the two I'll loop.

But I'm still new to LR3 so I'm wondering how the system works. So there's in and out to the heater core, but the other two that drop vertically out of the Ts?

 

Update on this: issue solved by removing the two coolant hoses that run down the side of the engine to the firewall, and looping where they connect to the front of the engine with another short hose. So, the coolant just loops around and back inside instead of going to the firewall. No issues, engine temp is good, just now there's no hot coolant running into the heater - good riddance. Old heater hoses left in place.

 

Those 2 that go down are for the rear HVAC.

 

FYI there are four hoses on vehicles equip with rear HVAC.