1993 Dodge Ram R12 R134a conversion - DodgeForum.com

Go Back   DodgeForum.com > Dodge Vans & CUVs > Dodge Ram Van
Log In 

Dodge Ram Van The full size Dodge Ram Van that showed that we can go and do as we please. Discuss the Dodge Ram Van here today.

1993 Dodge Ram R12 R134a conversion

Thread Tools Search this Thread
Old 02-26-2007, 10:44 PM
zenman zenman is offline
Registered User
Join Date: Aug 2006
Posts: 12
Default 1993 Dodge Ram R12 R134a conversion

So I am in a middle of a dilemma.

I have to replace the blower for my 1993 Dodge B250. To do so, I have to remove the AC system above it. Thus, I have to discharge the R12 and evenutally refill with r12.

This charge to refill the R12 is $375 in CA where R12 is $30 a pound; plus replace rates.

Now I am thinking about converting to R134a. My understanding that I will need to:

- empty R12
- flush system to remove existing oil
- replace drier
- replace fittings to R134a
- replace R12 label to R134a

Do I need barrier hoses?, replace O-rings? new compressor? Neoprene seals?

I am expecting "It depends" answers, if any.

Anyone done this on a Dodge Van?

Any advice?

Reply With Quote
Old 02-27-2007, 12:11 PM
stev's Avatar
stev stev is offline
Record Breaker
Join Date: Dec 2005
Vehicle: 2001 Dodge Ram Van B2500 V8 5.2L, 3.92:1, RoadMaster MKII-XXF
Location: Nashville
Posts: 1,360
Default RE: 1993 Dodge Ram R12 R134a conversion

Well, it all depends.

The first thing I would do is consult the dealer for your question at hand. Visit the parts desk. Get an understanding if this a doable project. Next, get a price on all of the required parts from them. You will need this to then shop around for aftermarket kits that upgrade to 134a.

OR ...

You could yank out the A/C system and drive with the windows down during the Canadian summers. Sure, a few days will push into some high temps, but it's not all summer long like NC, USA. Does your van have powered windows? Even aftermarket power window kits are available too.

Those are some thoughts. A few years ago, I took out the A/C R12 system out of my previous 1985 Dodge Caravan. It had powered front windows and the pop-out rear windows to keep cool.
71 Duster 340, 74 T&C 440-Interceptor, 74 Duster /6 225, 76 Aspen /6 225, 79 Volare S/6 225, 81 Pacer I6 258, 88 Colt I4, 85 Caravan 2.6L, 94 Caravan 3.0L, 96 Caravan 3.3L, 00 Ram Van B1500 3.9L, 01 Ram Van B2500 5.2L, 05 Caravan SXT 3.8L
Reply With Quote
Old 02-28-2007, 01:30 AM
zenman zenman is offline
Registered User
Join Date: Aug 2006
Posts: 12
Default RE: 1993 Dodge Ram R12 R134a conversion


I think I will go with the minimal installaton and wait for the compressor to seize within the first couple of minutes after the conversion. Clean and purge the system to remove all of the previous oils.

Replace the broken blower.

Replace the drier.
Replace the fittings

Put R134a in there and see if it takes.

I there are still problems, pull it out.

I have power windows and this is only a second vehicle for camping.

I hear that people survived for thousands of years without AC.

I just want to try it. For $240 I can get rebuilt compressor for 134a. Otherwise that major costs will be below $100.

I was hoping to not be the first.

Reply With Quote
Old 03-05-2007, 01:03 AM
IGadget IGadget is offline
Join Date: Oct 2006
Posts: 233
Default RE: 1993 Dodge Ram R12 R134a conversion

Well when you do it post back here on your results so we can all learn something.
Current: 1985 Ramcharger SE Royal / 318 / 2bbl / A727 / 148K
Blue Whale (RIP) - 1987 Ram Van / B250 / 318 / 2bbl / A727 / plow / 193K
White Elephant (RIP) - 1983 Ram Van / B150 / 318 /2bbl / A833 OD4 / 250K - Kept Trans & 36G Tank
Reply With Quote
Old 04-05-2007, 07:20 AM
zenman zenman is offline
Registered User
Join Date: Aug 2006
Posts: 12
Default RE: 1993 Dodge Ram R12 R134a conversion

I was able to remove the blower without removing AC system.

Thank you socket elbows.

Had to disassemble the blower while in the engine because I couldn't get it out.

AC system stays R12 a little linger.

I am always looking for a good compressor on ebay.

Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Coolant in oil, oil not in coolant. SteveTangential 1st Gen Ram Tech 4 09-10-2015 10:38 AM
back up camera 48woody Dodge Ram Van 2 08-06-2015 06:21 AM
NP231D Rebuild kit luckysun 2nd Gen Ram Tech 3 07-07-2015 09:40 AM
Be covered up with the Undercover tonneau covers carid Vendor Group And Special Buys 0 07-07-2015 07:38 AM
4x4 conversion drjlambert 2nd Gen Ram Tech 4 07-06-2015 11:43 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 04:08 PM.