ac evaporator question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tomtuna1978 · 05-01-2009, 11:46 AM

sorry if this has alredy been asked, i did a search... manny searches, and came up with nothing. i read someware that someone converted their factory air evaporator to a orface tube design from a newer truck, like an 87 blazer or truck. my question is how hard was this and what year and model evaporaror are you using? thanks for anny help... i just got a 69 c10 long bed and it has factory air and id like to do ths mod as i know the orface tube system like the back of my hand and can get it blowing ice out the vents

**leddzepp** · 05-01-2009, 12:16 PM

You are talking about a POA upgrade kit. It is used with the factory evaporator coil. Here is what it looks like. It will not make your A/C system blow any cooler than the original POA valve.

Lugnut64052 · 05-01-2009, 01:30 PM

I'm planning on re-making my system into a CCOT setup when I get the air going. Mosesburb figured out the parts to use in his excellent build thread.

Evaporator number is an ACDelco 15-6249. Long GM number is 3035171. It fits '77 Montes, Chevelles and Impalas. According to mosesburb it lays right in there but is a row or two shorter, so you'll have to fab a small bracket to weatherstrip it properly.

Accumulator number is ACDelco 15-1648. Fits many late '80s & early '90s mid-sized sedans.

Question back to you-- what are you planning to use for a condenser? The factory one or a different shape/style?

tomtuna1978 · 05-01-2009, 06:38 PM

i was thinking of using like a 95ish 1500 truck condencer because it is all reddy for 134

**john** · 05-01-2009, 06:55 PM

Heres a link to the orifice upgrade kit. http://www.oldairproducts.com/catalo...00_407_4071972

tomtuna1978 · 05-01-2009, 07:01 PM

ok guys ... lets get this strait... i dont want to upgrade the old poa valve... i want to convert to a orface tube evaporator.

Lugnut64052 · 05-01-2009, 07:24 PM

Quote:

Originally Posted by tomtuna1978

i dont want to upgrade the old poa valve... i want to convert to a orface tube evaporator.

Not sure what you're getting at . . . why would you keep the POA valve and install an orifice tube friendly evap?

tomtuna1978 · 05-02-2009, 01:45 PM

I don't want to keep the poa valve ... I want to convert the whole system to a orface tube system

Lugnut64052 · 05-02-2009, 02:12 PM

Okay, then the two part numbers I posted earlier will work. Surf over to mosesburb's build thread and look at the first picture in post #7. You can even see the orifice tube dimples on the inlet of that evap. The accumulator will screw right onto the outlet.

05-01-2009, 11:46 AM	#1
tomtuna1978 Registered User Join Date: Apr 2009 Location: Bend,Oregon Posts: 225	ac evaporator question sorry if this has alredy been asked, i did a search... manny searches, and came up with nothing. i read someware that someone converted their factory air evaporator to a orface tube design from a newer truck, like an 87 blazer or truck. my question is how hard was this and what year and model evaporaror are you using? thanks for anny help... i just got a 69 c10 long bed and it has factory air and id like to do ths mod as i know the orface tube system like the back of my hand and can get it blowing ice out the vents

05-01-2009, 12:16 PM	#2
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,031	Re: ac evaporator question You are talking about a POA upgrade kit. It is used with the factory evaporator coil. Here is what it looks like. It will not make your A/C system blow any cooler than the original POA valve. Attached Images __________________ 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

05-01-2009, 01:30 PM	#3
Lugnut64052 Middle-aged Curmudgeon Join Date: Jun 2008 Location: Independence, MO Posts: 753	Re: ac evaporator question I'm planning on re-making my system into a CCOT setup when I get the air going. Mosesburb figured out the parts to use in his excellent build thread. Evaporator number is an ACDelco 15-6249. Long GM number is 3035171. It fits '77 Montes, Chevelles and Impalas. According to mosesburb it lays right in there but is a row or two shorter, so you'll have to fab a small bracket to weatherstrip it properly. Accumulator number is ACDelco 15-1648. Fits many late '80s & early '90s mid-sized sedans. Question back to you-- what are you planning to use for a condenser? The factory one or a different shape/style? __________________ Bret Check out the site's Truck Tech FAQ. Be a site supporter. My more-or-less pathetic build thread. Board members I've met: ------------------------------ Longhorn Man Dieselwrencher jholley big mike71

05-01-2009, 06:38 PM	#4
tomtuna1978 Registered User Join Date: Apr 2009 Location: Bend,Oregon Posts: 225	Re: ac evaporator question i was thinking of using like a 95ish 1500 truck condencer because it is all reddy for 134

05-01-2009, 06:55 PM	#5
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: ac evaporator question Heres a link to the orifice upgrade kit. http://www.oldairproducts.com/catalo...00_407_4071972 __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/ Last edited by john; 05-01-2009 at 06:56 PM.

05-01-2009, 07:01 PM	#6
tomtuna1978 Registered User Join Date: Apr 2009 Location: Bend,Oregon Posts: 225	Re: ac evaporator question ok guys ... lets get this strait... i dont want to upgrade the old poa valve... i want to convert to a orface tube evaporator.

05-02-2009, 01:45 PM	#8
tomtuna1978 Registered User Join Date: Apr 2009 Location: Bend,Oregon Posts: 225	Re: ac evaporator question I don't want to keep the poa valve ... I want to convert the whole system to a orface tube system

05-02-2009, 02:12 PM	#9
Lugnut64052 Middle-aged Curmudgeon Join Date: Jun 2008 Location: Independence, MO Posts: 753	Re: ac evaporator question Okay, then the two part numbers I posted earlier will work. Surf over to mosesburb's build thread and look at the first picture in post #7. You can even see the orifice tube dimples on the inlet of that evap. The accumulator will screw right onto the outlet. __________________ Bret Check out the site's Truck Tech FAQ. Be a site supporter. My more-or-less pathetic build thread. Board members I've met: ------------------------------ Longhorn Man Dieselwrencher jholley big mike71



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