1HD-T serial number 0028026 rescue

[logicbyondreaso]

The drain is so you can drain the block of coolant.

Does not look like your block has the drain so your cover should be drilled/taped for the drain cock. Old oil cooler will give you the drain cock itself, location, and thread type/size.

 

[svsisu]

Looks like you are not planning on running a heater either? It looks like there is a frost plug in place of where the heat supply fitting would go.

 

[John Young]

Well, in the US I live in Florida and I still have the glow plugs, which I just installed today. From the look of them they had never been used.

 

[John Young]

The drain is so you can drain the block of coolant.

Does not look like your block has the drain so your cover should be drilled/taped for the drain cock. Old oil cooler will give you the drain cock itself, location, and thread type/size.

...but what is it meant to do?

 

[logicbyondreaso]

...but what is it meant to do?

The drain is so you can drain the block of coolant.

 

[logicbyondreaso]

Looks like you are not planning on running a heater either? It looks like there is a frost plug in place of where the heat supply fitting would go.

Great call out by @svsisu - I think you should consider installing the heater core supply into the block. Its installed into the most rear LH side freeze plug port. Part number: 16278-17010

You will also need the heater core coolant return pipe which the turbo uses too. Part number: 16268-17020.

Coolant return port. Just above thermostat.

This pipe gets pressed into the above circled area. The small pipe nipple below is for the turbo return.