new vs old Air Conditioning - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Custom 68 · 06-16-2003, 02:37 PM

Hello All, I am in the process of restoring my 68 currently it is in pieces with hopes of getting put back together. Anyway it has factory air and used to work I have tried to seal up the fittings but am sure they got stuff inside anyway. At this point am I better off to convert this to R134 and use my old compressor. What are the ideas for changing the compressor can I just change this and what to use. I do remember there is a valve toward the box that would sometimes stick, if I tapped it it would get cool again. I have seen some posts saying the new ones are more efficient. My plans for the sake of money was just to use what I have (possibly a compressor change) but didn’t know what all to change if converting to the new R134.
Thanks and just wanted to see what others had done.
Dave

1972ChevyGuy · 06-16-2003, 03:57 PM

I personally like the old. Yes, 134 is cheap and easy to use, but in my truck it doesnt seem to blow as cold. You may have to have a dealers lisence to get the old freon? Depends on where you live i guess, but my vote goes to old style

crazy4chevs · 06-16-2003, 04:33 PM

I second it.

Project1970 · 06-16-2003, 07:21 PM

I third it, even if only to keep the market price for original stuff up whenever I get the cash to yank it all out and put in a Vintage Air system

Seriously, though, I can't stand the stock stuff...it's one big headache. As soon as I can I'm ditching it.

1972ChevyGuy · 06-16-2003, 08:36 PM

The old is R12 right?

Custom 68 · 06-16-2003, 09:52 PM

Yes the old R12 so would you just keep everything stock? I guess just a compressor change is out of the question. Does everything else need to be changed?
Thanks
Dave

1972ChevyGuy · 06-17-2003, 11:45 AM

When i changed a car over from 12, all I did was bleed off the R12, bought some yellow jacket gauges, and put in the new 134. Oil charge, leak sealant and the freon itsself. Has worked fine for 3 years now.

1972ChevyGuy · 06-17-2003, 11:50 AM

bleh, it came up twice

crazy4chevs · 06-17-2003, 11:59 AM

orfice tube (filter), reciver/drier, flush out the system,change the compressor if needed(pouring new oil in compressor), pull vac on system, recharge with r-12.

Note: some people put a kit in that changes the system so that it cycles instead of the compressor constantily running,this should be done with the system evacuated.

fishuntr · 06-17-2003, 09:27 PM

If I can add a question..my 72 has an underdash system. It was installed at the dealer when truck was new, but is not factory air. It has a York compressor. Other than checking/changing the mineral oil in the compressor, does any additional oil have to be added in the system?

Thanks

TooMany2count · 06-17-2003, 09:36 PM

Quote:

Originally posted by 1972ChevyGuy
I personally like the old. Yes, 134 is cheap and easy to use, but in my truck it doesnt seem to blow as cold. You may have to have a dealers lisence to get the old freon? Depends on where you live i guess, but my vote goes to old style

anywhere in the US to legally buy R12 you MUST have a license to buy it, and dont forget R12 (around here anyway) it cost between $35-$45 for a 12oz can (& keeps going UP)which aint cheap compared to about $4-5 a can for 134A....joe

garthdader · 06-18-2003, 02:32 PM

If you want to change to R134 then I would suggest the kit POA update kit from classicindustries.com. It is a POA valve deletion kit and it comes with all you need to convert to R134 except the compressor and evaporator. Kits runs at $325

06-16-2003, 02:37 PM	#1
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,944	new vs old Air Conditioning Hello All, I am in the process of restoring my 68 currently it is in pieces with hopes of getting put back together. Anyway it has factory air and used to work I have tried to seal up the fittings but am sure they got stuff inside anyway. At this point am I better off to convert this to R134 and use my old compressor. What are the ideas for changing the compressor can I just change this and what to use. I do remember there is a valve toward the box that would sometimes stick, if I tapped it it would get cool again. I have seen some posts saying the new ones are more efficient. My plans for the sake of money was just to use what I have (possibly a compressor change) but didn’t know what all to change if converting to the new R134. Thanks and just wanted to see what others had done. Dave __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

06-16-2003, 04:33 PM	#3
crazy4chevs Registered User Join Date: Oct 2002 Location: Des Moines WA. (Kent, area) Posts: 668	I second it. __________________ 70 chev c10 swb fleet 72 grill, sb 400, 2/4 drop. 68 chev c10 swb fleet Early classic 4/6 drop with 4wheel disc brakes 9"rear 67-8 buckets tilt and A/C Classic GM Truck Club of Washington .

06-16-2003, 07:21 PM	#4
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	I third it, even if only to keep the market price for original stuff up whenever I get the cash to yank it all out and put in a Vintage Air system Seriously, though, I can't stand the stock stuff...it's one big headache. As soon as I can I'm ditching it. __________________ Project1970 - LS1 Swap Complete!

06-16-2003, 09:52 PM	#6
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,944	Yes the old R12 so would you just keep everything stock? I guess just a compressor change is out of the question. Does everything else need to be changed? Thanks Dave __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

06-17-2003, 11:59 AM	#9
crazy4chevs Registered User Join Date: Oct 2002 Location: Des Moines WA. (Kent, area) Posts: 668	orfice tube (filter), reciver/drier, flush out the system,change the compressor if needed(pouring new oil in compressor), pull vac on system, recharge with r-12. Note: some people put a kit in that changes the system so that it cycles instead of the compressor constantily running,this should be done with the system evacuated. __________________ 70 chev c10 swb fleet 72 grill, sb 400, 2/4 drop. 68 chev c10 swb fleet Early classic 4/6 drop with 4wheel disc brakes 9"rear 67-8 buckets tilt and A/C Classic GM Truck Club of Washington .

06-16-2003, 03:57 PM	#2
1972ChevyGuy Registered User Join Date: Nov 2002 Location: Kannapolis, NC Posts: 552	I personally like the old. Yes, 134 is cheap and easy to use, but in my truck it doesnt seem to blow as cold. You may have to have a dealers lisence to get the old freon? Depends on where you live i guess, but my vote goes to old style

06-16-2003, 08:36 PM	#5
1972ChevyGuy Registered User Join Date: Nov 2002 Location: Kannapolis, NC Posts: 552	The old is R12 right?

06-17-2003, 11:45 AM	#7
1972ChevyGuy Registered User Join Date: Nov 2002 Location: Kannapolis, NC Posts: 552	When i changed a car over from 12, all I did was bleed off the R12, bought some yellow jacket gauges, and put in the new 134. Oil charge, leak sealant and the freon itsself. Has worked fine for 3 years now.

06-17-2003, 11:50 AM	#8
1972ChevyGuy Registered User Join Date: Nov 2002 Location: Kannapolis, NC Posts: 552	bleh, it came up twice

06-17-2003, 09:27 PM	#10
fishuntr Registered User Join Date: Jul 2000 Location: Lucerne Valley, CA., USA Posts: 50	If I can add a question..my 72 has an underdash system. It was installed at the dealer when truck was new, but is not factory air. It has a York compressor. Other than checking/changing the mineral oil in the compressor, does any additional oil have to be added in the system? Thanks

06-18-2003, 02:32 PM	#12
garthdader Registered User Join Date: Sep 2002 Location: Atoka, Tn Posts: 64	If you want to change to R134 then I would suggest the kit POA update kit from classicindustries.com. It is a POA valve deletion kit and it comes with all you need to convert to R134 except the compressor and evaporator. Kits runs at $325

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