coolant flow through heater core

[Insidious Surmiser]

before reading... there are cliff notes at bottom :biglaugh:

so, pretty much i'm too lazy to buy new coolant hoses... here's how it goes... there is a coolant line that runs from the rear/top of the cylinder head into a plastic thing? on the left side of the engine bay. there is a line (on the US 7m) that runs from the right side of the engine block and connects to a line comming out of the firewall on the right side of the engine bay...

pretty much what i've done is taking the coolant line running from the top of the motor and run it to the coolant line on the right side of the bay, i took the other line (the one i said came from the right side of the block, but comes from the left side on the jap 7m) and routed it to the plastic thing on the left side of the firewall

cliff notes: will reversing the coolant flow through the heater core have any effects?

 

[Strannik]

well that plastic thing is the valve that controls the flow of coolant through the heater core
dunno what will happen if you reverse the flow though

 

[IJ.]

The valve may not seal with the flow direction changed as it's a plain poppet valve so seal better one way then the other.

 

[lagged]

didnt shaeff run his in reverse? i dont know why, but i am recalling that for some reason.

 

[Insidious Surmiser]

hm... maybee i'll get him to take a look at the thread...

 

[shaeff]

lagged is correct. i have mine running backwards. no ill-effects. works fine. i ran them backwards because i HATE the stock USDM method of feeding the heater core from that nearly impossible-to-reach behind the block/head. so on my JDM motor, i left the cap on there, and hooked up a heater hose to the normally blocked off portion on the USDM motors, and from the back of the head. it works fine.

-shaeff

 

[Insidious Surmiser]

cool, thanks for the input