AC Repair - can we say blow cold! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**70cst** · 06-18-2017, 04:11 PM

Had to replace the dyer, filter, and bearings ... I can now say it blows cold. As a matter of fact - all the way set to cold is actually to cold for the cab. Who knew the factory GM AC unit could blow this cold. Also they used R12.

**leddzepp** · 06-18-2017, 04:15 PM

Yep...I use nothing but r-12 in a factory AC system, as it was designed for. Ice cold air no matter how hot it is outside

davepl · 06-18-2017, 08:58 PM

I still think R-134 with a parallel-flow condenser (which isn't stock, of course) is even colder...

But what about R-12 with a parallel flow? That'd be cold. I've just never seen it done!

**70cst** · 06-18-2017, 09:11 PM

Quote:

Originally Posted by davepl

I still think R-134 with a parallel-flow condenser (which isn't stock, of course) is even colder...

But what about R-12 with a parallel flow? That'd be cold. I've just never seen it done!

Possibly but ... I wanted to keep my AC as close to stock as I could.

06-18-2017, 04:11 PM	#1
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	AC Repair - can we say blow cold! Had to replace the dyer, filter, and bearings ... I can now say it blows cold. As a matter of fact - all the way set to cold is actually to cold for the cab. Who knew the factory GM AC unit could blow this cold. Also they used R12. __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

06-18-2017, 04:15 PM	#2
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,031	Re: AC Repair - can we say blow cold! Yep...I use nothing but r-12 in a factory AC system, as it was designed for. Ice cold air no matter how hot it is outside __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul

06-18-2017, 08:58 PM	#3
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: AC Repair - can we say blow cold! I still think R-134 with a parallel-flow condenser (which isn't stock, of course) is even colder... But what about R-12 with a parallel flow? That'd be cold. I've just never seen it done! __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible



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