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General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums.

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Unread 01-11-2005, 06:45 PM   #1
samualt
Cooling Neophyte
 
Join Date: Jan 2005
Location: Texas, USA
Posts: 30
Default Heater Cores - How tell if single pass?

I'm building an out-of-case cooler so I wanted a big heater core at a good price. I'd like it to be new so there is no gunk inside (no used parts).
I was thinking about the GDI 399031,Fedco 2-210, model because it is only $26 at Autozone and is 9.8" x 6.2" x 2.5" = 154 cubic inches in volume.

How can I tell if this is a single or double pass?
It is very thick at 2.5", wouldn't this mean more fins and more cooling? Is thicker better?
Is trying to figure "Fin Volume" (length x width x depth) an effective way to tell how well a heater core might do? Or, should I just go by Length x Width?

Thanks for any info...........Sam
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Unread 01-11-2005, 07:31 PM   #2
bobkoure
Cooling Savant
 
Join Date: Feb 2003
Location: USA - Boston area
Posts: 798
Default

You might read a few more threads here as all the info's there.
That said, fin-and-tube heater cores have a header tank at either end. If there's an inlet in the tank at one end and an outlet in the tank at the other end, then that's very probably a single pass radiator.

Thickness doesn't help much, but does increase airflow resistance - which means you'd need stronger (and louder) fans. Only an issue if you care about noise. So, yes, length x width (or frontal area, if you will...)
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Unread 01-11-2005, 09:56 PM   #3
Blackeagle
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Join Date: Oct 2002
Location: U.S.A = Michigan
Posts: 1,243
Default

If a single pass is what you want then look for Fedco #2-342 core. 9 1/2" X 6 1/8" X 2"

GDI # for above is (If I recall right ) 399010, but I"m not sure of that.

Core comes from a chevy pickup with air 69-72, and that I am sure of.

I'd strongly suggest you avoid cores thicker than 2" as the resistence they offer is more a hinderance than a help.

As Bob points out there is a wealth of info here on many differant rads of all kinds.

Good luck and welcome to Pro Cooling.
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