Running R12 in a Sanden? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

eric8 · 02-14-2014, 02:47 PM

Hey guys...gonna be installing my ls3 soon so it will obviously have LS accessory drive with a Sanden style compressor. My 72 C10 currently has factory air that works great running R12 with the stock A6 compressor.

My question is, assuming I buy a Sanden unit already filled with R12 compatible oil and R12 charge ports, can I just get custom lines made and plumb the new compressor into my existing components, and continue running it as an R12 system? I figured this would be the cheapest/easiest integration into the AC system already there. Didn't want to go 134 because I'd like to keep the stock condenser, and I'm told 134 doesn't work too well unless you upgrade to a parallel flow unit.

**truckdude239** · 02-14-2014, 04:21 PM

Only problem i see is finding someone that can pull the r12 out and save it till you done r12 here is going for 96 dollars a pound makes 134a swap over look really nice.

hyatt · 02-14-2014, 04:49 PM

I did ac work for 30 years There is a product called freeze 12 Its a r12 substitute I used it for years instead of R12 performs the same If your sanden is for 134 change oil in compressor to old style oil

solidaxel · 02-14-2014, 06:57 PM

I have some lb's !!!!!!!!

BR3W CITY · 02-14-2014, 07:52 PM

I sold a container of R12 for $475 when they banned it the first time here.
Two years later they said it was okay to sell hotshots, then banned them...
then came out with the replacements, and said it was ok again....go figure.

eric8 · 02-14-2014, 08:22 PM

Looks like you can still buy R12 on eBay but it ain't cheap! Regardless you have to sign an affidavit saying you are a reseller, authorized installer, or will have an authorized installer charge/evacuate the system you are working on before they'll sell it to ya. Suuuuure!

Andy4639 · 02-14-2014, 10:21 PM

The systemm will work but for the cost effictiveness I think your better off going 134-A now and be done with it. I can't tell any differance in performance of it compared to R12. Mine will blow 38-40 degree's sitting still.

solidaxel · 02-14-2014, 10:54 PM

Quote:

Originally Posted by Andy4639

The systemm will work but for the cost effictiveness I think your better off going 134-A now and be done with it. I can't tell any differance in performance of it compared to R12. Mine will blow 38-40 degree's sitting still.

YUP, he's right on both accounts, even here in the desert !!

eric8 · 02-14-2014, 11:07 PM

But to be sure, that is with the upgraded parallel flow condenser, right?

solidaxel · 02-14-2014, 11:14 PM

I still have the stock 1978 condenser and same evap. and R134 colder than the R12, I changed it 4 years ago, like it better

eric8 · 02-14-2014, 11:42 PM

Interesting! I may give the 134 a shot.

Andy4639 · 02-15-2014, 09:14 AM

Quote:

Originally Posted by eric8

But to be sure, that is with the upgraded parallel flow condenser, right?

Yes mine has been upgraded. I bought the classic air upgrade when I got the compressor.

lutronjim · 02-15-2014, 06:20 PM

Had a friend who ran a garage and he used freon called fr12. Compatible with r12 and was priced below r134. Don't know if its still around.

littlevictories · 02-16-2014, 12:33 AM

damn, lived in the PNW all my life
never even owned an A/C car

its all a buncha greek to me

eric8 · 02-16-2014, 12:49 AM

Quote:

Originally Posted by littlevictories

damn, lived in the PNW all my life
never even owned an A/C car

its all a buncha greek to me

Consider yourself lucky

. Cause I'd love to delete the whole mess altogether and smooth the passenger side of my firewall!

eric8 · 02-16-2014, 12:50 AM

Quote:

Originally Posted by lutronjim

Had a friend who ran a garage and he used freon called fr12. Compatible with r12 and was priced below r134. Don't know if its still around.

Hi I called it R12 earlier but that fr12 is exactly what mine had in it....They call it Freeze 12 I believe

littlevictories · 02-16-2014, 12:51 AM

you're welcome to join us. just make sure your wipers are sorted and your windows dont leak

typically 180 days/year with precipitation this side of the cascades

eric8 · 02-16-2014, 12:53 AM

Quote:

Originally Posted by littlevictories

you're welcome to join us. just make sure your wipers are sorted and your windows dont leak

typically 180 days/year with precipitation this side of the cascades

Yeah was gonna say what you give up with hot weather you get back ten fold in precip!

02-14-2014, 02:47 PM	#1
eric8 Registered User Join Date: May 2013 Location: Utopia Posts: 215	Running R12 in a Sanden? Hey guys...gonna be installing my ls3 soon so it will obviously have LS accessory drive with a Sanden style compressor. My 72 C10 currently has factory air that works great running R12 with the stock A6 compressor. My question is, assuming I buy a Sanden unit already filled with R12 compatible oil and R12 charge ports, can I just get custom lines made and plumb the new compressor into my existing components, and continue running it as an R12 system? I figured this would be the cheapest/easiest integration into the AC system already there. Didn't want to go 134 because I'd like to keep the stock condenser, and I'm told 134 doesn't work too well unless you upgrade to a parallel flow unit.

02-14-2014, 04:21 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: Running R12 in a Sanden? Only problem i see is finding someone that can pull the r12 out and save it till you done r12 here is going for 96 dollars a pound makes 134a swap over look really nice. __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

02-14-2014, 04:49 PM	#3
hyatt Registered User Join Date: Dec 2012 Location: sparta tennessee Posts: 345	Re: Running R12 in a Sanden? I did ac work for 30 years There is a product called freeze 12 Its a r12 substitute I used it for years instead of R12 performs the same If your sanden is for 134 change oil in compressor to old style oil __________________ 1946 car hauler 1948 surburban 1937 chevy sedan 1940 olds sedan (project) 1967 ss396 chevelle 1999 dually crewcab(24000 miles)

02-14-2014, 06:57 PM	#4
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: Running R12 in a Sanden? I have some lb's !!!!!!!! __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

02-14-2014, 07:52 PM	#5
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Running R12 in a Sanden? I sold a container of R12 for $475 when they banned it the first time here. Two years later they said it was okay to sell hotshots, then banned them... then came out with the replacements, and said it was ok again....go figure. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

02-14-2014, 08:22 PM	#6
eric8 Registered User Join Date: May 2013 Location: Utopia Posts: 215	Re: Running R12 in a Sanden? Looks like you can still buy R12 on eBay but it ain't cheap! Regardless you have to sign an affidavit saying you are a reseller, authorized installer, or will have an authorized installer charge/evacuate the system you are working on before they'll sell it to ya. Suuuuure!

02-14-2014, 10:21 PM	#7
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Running R12 in a Sanden? The systemm will work but for the cost effictiveness I think your better off going 134-A now and be done with it. I can't tell any differance in performance of it compared to R12. Mine will blow 38-40 degree's sitting still. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

02-14-2014, 11:07 PM	#9
eric8 Registered User Join Date: May 2013 Location: Utopia Posts: 215	Re: Running R12 in a Sanden? But to be sure, that is with the upgraded parallel flow condenser, right?

02-14-2014, 11:14 PM	#10
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: Running R12 in a Sanden? I still have the stock 1978 condenser and same evap. and R134 colder than the R12, I changed it 4 years ago, like it better __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

02-14-2014, 11:42 PM	#11
eric8 Registered User Join Date: May 2013 Location: Utopia Posts: 215	Re: Running R12 in a Sanden? Interesting! I may give the 134 a shot.

02-15-2014, 06:20 PM	#13
lutronjim Registered User Join Date: Dec 2013 Location: Dunwoody,Ga Posts: 443	Re: Running R12 in a Sanden? Had a friend who ran a garage and he used freon called fr12. Compatible with r12 and was priced below r134. Don't know if its still around.

02-16-2014, 12:33 AM	#14
littlevictories Registered User Join Date: Dec 2013 Location: Portland, Ore. Posts: 348	Re: Running R12 in a Sanden? damn, lived in the PNW all my life never even owned an A/C car its all a buncha greek to me

02-16-2014, 12:51 AM	#17
littlevictories Registered User Join Date: Dec 2013 Location: Portland, Ore. Posts: 348	Re: Running R12 in a Sanden? you're welcome to join us. just make sure your wipers are sorted and your windows dont leak typically 180 days/year with precipitation this side of the cascades

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