GM A-body (Olds) heater core fitting modification

slowmobile · Post by **slowmobile** » Sat Dec 27, 2008 4:03 pm

I'm trying to clean up my engine compartment and would like to get rid of the rubber heater hose in favor of black braided lines on a '66 Cutlass. Does anyone know how to "convert" the existing brass nipples to -AN fittings?

Thanks.

crazyman · Post by **crazyman** » Sat Dec 27, 2008 6:31 pm

You could cut off some of the barb area, and cut a 1/2 NPT "female" brass coupler in half, "unless it's formed for that purpose", and solder it to the core. AN adapters could then be threaded into the brass. You'd probably want to screw the adapters into the brass before soldering, so you won't twist off the heater core.

My 2 cents.

"Edit in quotation marks. My fault for being vague."

slowmobile · Post by **slowmobile** » Mon Dec 29, 2008 9:13 am

Are you talking about a female 1/2 NPT coupler?

Thanks.

crazyman · Post by **crazyman** » Wed Dec 31, 2008 5:33 am

Yes. Take something like these, and solder them onto the ends of the heater core.

1/2" thread, 1/2" copper pipe size.
http://www.grainger.com/Grainger/items/1DGD2

1/2" - 3/8", unclear on what is what.
http://www.grainger.com/Grainger/items/1DGD1

And screw these into them.

http://store.summitracing.com/partdetai ... toview=sku

And viola!! Bada bing!

Simplest way in my opinion....

crazyman · Post by **crazyman** » Sun Jan 24, 2010 3:55 am

Well, how'd it turn out?