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D1S13
03-06-2008, 08:18 AM
the lines for my heater core are currently recirculated on my s13

want to hook them to the heater core, but need to know which hose goes to the top and which to the bottom.

searching all morning w/no luck:bash:

thx for help
chituntang
03-06-2008, 08:24 AM
Does not really matter from what I heard and what I did on mine
D1S13
03-06-2008, 08:26 AM
Does not really matter from what I heard and what I did on mine

doesn't matter which way the coolant flows???
g6civcx
03-06-2008, 08:59 AM
Does not really matter from what I heard and what I did on mine

You want the inlet to the heater core to be the line regulated by the temperature control rod.

As for coolant circulation in the block, check the FSM for direction of coolant circulation as controlled by the water pump.
D1S13
03-06-2008, 09:21 AM
You want the inlet to the heater core to be the line regulated by the temperature control rod.

As for coolant circulation in the block, check the FSM for direction of coolant circulation as controlled by the water pump.

found the line regulated by the temperature control rod, now is the inlet of the heater core the bottom spout??? or the top?
Monooxide
03-06-2008, 10:58 AM
Bottom = In
Top = Out.

I had to look it up on my install.
D1S13
03-06-2008, 12:40 PM
Bottom = In
Top = Out.

I had to look it up on my install.

thank you guys
chituntang
03-06-2008, 12:52 PM
You want the inlet to the heater core to be the line regulated by the temperature control rod.

As for coolant circulation in the block, check the FSM for direction of coolant circulation as controlled by the water pump.


Well, the thing is that if you pull the lever to cold, the coolant within the heater core will be stuck and you it will not exchange heat from the engine anymore since coolant from engine is not getting in. So it really does not matter.