Heatercore Inlet / Outlet - how to connect

garetjax · 11-28-2001, 08:17 PM

OK don't laugh - I did the heatercore mods to a heatercore I bought from autozone and now I don't remember which connection was the bigger one - the inlet was 5/8 and the outlet was 3/4. Does it make a difference how you connect your heatercore - specifically do you have to run the hot into the inlet?

Thanks - GaretJax

UnaClocker · 11-28-2001, 09:19 PM

Nah, doesn't matter, I'm not even sure why some cars do that and most don't..

Butcher · 11-29-2001, 05:05 AM

Probably to do with what the inlet and outlet connect to more than the core itself - if you have a 5/8" outlet that goes to a 3/4" connector you'd need a hose reducer somewhere, by running it 3/4" from the core you don't

11-29-2001, 11:09 AM

this probably wont make a huge difference, but I would put the larger connection as the outlet. Idea is simple... radiator creates a pressure drop, and lower pressure water flows better through a larger opening. I may be wrong.

Kevin · 11-29-2001, 05:50 PM

It doesn't matter where the bottleneck is. Either way it exists so it doesn't matter.
-Kev

11-28-2001, 08:17 PM	#1
garetjax Cooling Neophyte Join Date: Oct 2001 Location: Mass, USA Posts: 48	Heatercore Inlet / Outlet - how to connect OK don't laugh - I did the heatercore mods to a heatercore I bought from autozone and now I don't remember which connection was the bigger one - the inlet was 5/8 and the outlet was 3/4. Does it make a difference how you connect your heatercore - specifically do you have to run the hot into the inlet? Thanks - GaretJax

11-28-2001, 09:19 PM	#2
UnaClocker Cooling Savant Join Date: Apr 2000 Location: Bremerton, WA Posts: 514	Nah, doesn't matter, I'm not even sure why some cars do that and most don't.. __________________ The UnaClocker Watercooler Extraordinaire! Overclock till it goes BOOM!

11-29-2001, 05:05 AM	#3
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Probably to do with what the inlet and outlet connect to more than the core itself - if you have a 5/8" outlet that goes to a 3/4" connector you'd need a hose reducer somewhere, by running it 3/4" from the core you don't __________________ Once upon a time, in a land far far away...

11-29-2001, 05:50 PM	#5
Kevin Slacking more than your weird uncle Join Date: Nov 2000 Location: San Diego, CA (UCSD) / Los Angeles, CA (home) Posts: 1,605	It doesn't matter where the bottleneck is. Either way it exists so it doesn't matter. -Kev __________________ I used to throw hot coffee all over the ass of the horse there, then whip him while he was kickin' at me. Those f***in things are crazy.

11-29-2001, 11:09 AM	#4
IronHelix Guest Posts: n/a	this probably wont make a huge difference, but I would put the larger connection as the outlet. Idea is simple... radiator creates a pressure drop, and lower pressure water flows better through a larger opening. I may be wrong.

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