A/C Conversion R134 to R414 "Hot Shot" - JeepForum.com
Reply
 
LinkBack Thread Tools
post #1 of 18 Old 02-28-2011, 06:52 PM Thread Starter
fedx95
Registered User
1993 XJ Cherokee 
 
Join Date: Nov 2010
Location: miami
Posts: 996
A/C Conversion R134 to R414 "Hot Shot"

Hey,
I have had no A/C in my XJ after the accident. I have the A/C lines ready to be dropped in, and I was wondering. Theres a bunch of articles for converting old R12 systems to R134 or R414b, which is also known as hot shot, and is similar to R12, except its cheap like r134. I was wondering if I could fill my already R134 system with R414b. I live in Miami, and im perspiring even in the "Winter".

fedx95 is offline  
Sponsored Links
Advertisement
 
post #2 of 18 Old 02-28-2011, 07:14 PM Thread Starter
fedx95
Registered User
1993 XJ Cherokee 
 
Join Date: Nov 2010
Location: miami
Posts: 996
and for that matter, that Enviro-Safe 12a, if anyone has used that on their r134 system
fedx95 is offline  
post #3 of 18 Old 02-28-2011, 07:26 PM
djb383
Registered User
1998 XJ Cherokee 
 
Join Date: Jan 2010
Location: The Republic of TEXAS
Posts: 2,200
To do the a/c properly, the evap/cond need to be flushed, new dryer and orifice tube installed (both are filters), oil drained from compressor and correct amount of oil (year specific) added back to system. A vacuum must be pulled (to remove air/moisture) and correct amount of freon added (year specific). Best to have a pro pull a vacuum/add freon unless u have a vacuum pump and a/c gauge/manifold and the knowledge to use them.
djb383 is offline  
post #4 of 18 Old 02-28-2011, 07:35 PM Thread Starter
fedx95
Registered User
1993 XJ Cherokee 
 
Join Date: Nov 2010
Location: miami
Posts: 996
I'm looking more for a response concerning the type of refrigerant used. I could just fill it with R134 but from what I've read, 12a and R414 is better, and they are direct replacements for R12. My question is, is it a direct replacement for R134
fedx95 is offline  
post #5 of 18 Old 02-28-2011, 07:49 PM
djb383
Registered User
1998 XJ Cherokee 
 
Join Date: Jan 2010
Location: The Republic of TEXAS
Posts: 2,200
My ? is, unless u have a permit/certificate, where can u get any refrigerant, other than r134a? Thought I saw r414 was only available in Canada, could be wrong, have been before.
djb383 is offline  
post #6 of 18 Old 02-28-2011, 09:17 PM
AZ Jeff
Web Wheeler
2014 JK Wrangler 
 
Join Date: Sep 2005
Location: San Tan Valley Arizona
Posts: 7,698
Your vehicle came filled with R134a. That means all the components were sized to deal with that refrigerant. A PROPERLY WORKING R134a system should be able to cool your XJ, even in Miami. My XJ does just fine here in AZ, where the sun and maximum temperatures are higher than where you live.

Owing to all of the above, I see no reason to deviate from the factory refrigerant and begin experimenting with stuff that may or may not work with the OEM parts.

AZ-Jeff
I don't own an XJ any longer, but I still think they are the best of all the Jeep products ever made. My XJ was my favorite vehicle in my 50+ years of driving.
So...I stick around and give advice.
AZ Jeff is offline  
post #7 of 18 Old 03-01-2011, 07:13 AM
tb007
Registered User
2001 XJ Cherokee 
 
Join Date: Nov 2004
Location: ohio
Posts: 10
I don't quite know how to word this... but if the 414 is closer to the old r12 it will work better (r134a is less efficient than r12, it's also more prone to leakage because of the size of the molecule)... but there should be no reason to switch if the ac is working properly... unless you just want to fudge around with it, which i can understand.
tb
tb007 is offline  
post #8 of 18 Old 03-01-2011, 07:57 AM
Rmart30
Registered User
 
Join Date: Feb 2009
Location: alabama
Posts: 487
FREEZONE is discussed in a lot of forums as a replacement for 134 and is supposed to be about 30% more efficient

I have never used it myself but it does sound tempting to try......link below

http://befreetech.com/envirosafe.htm

Currently own 93 XJ 33's on 4" lift....01 XJ stock,will replace my 93 after mods are done..... 1994 ZJ V8, BB w/31's........99 XJ stock....97 XJ 2wd 5 spd stock.... and just p/u a 98 XJ 4wd/5 spd and a 01 XJ
Rmart30 is offline  
post #9 of 18 Old 03-01-2011, 10:04 AM
djb383
Registered User
1998 XJ Cherokee 
 
Join Date: Jan 2010
Location: The Republic of TEXAS
Posts: 2,200
Tumors on testicles! Yikes! Did a partial a/c overhaul last summer on our XJ, 34F at the center vents using R134a.
djb383 is offline  
post #10 of 18 Old 03-01-2011, 10:08 AM
djb383
Registered User
1998 XJ Cherokee 
 
Join Date: Jan 2010
Location: The Republic of TEXAS
Posts: 2,200
Quote:
Originally Posted by AZ Jeff View Post
........My XJ does just fine here in AZ, where the sun and maximum temperatures are higher than where you live.......
.......but your's is a dry heat, the OP's heat comes with high tide 24/7/365.
djb383 is offline  
post #11 of 18 Old 03-01-2011, 03:41 PM Thread Starter
fedx95
Registered User
1993 XJ Cherokee 
 
Join Date: Nov 2010
Location: miami
Posts: 996
humidity is like, 70% on a good day now. When summer comes round, im screwed. high 90s with like 100% humidity sucks
fedx95 is offline  
post #12 of 18 Old 03-01-2011, 04:56 PM
djb383
Registered User
1998 XJ Cherokee 
 
Join Date: Jan 2010
Location: The Republic of TEXAS
Posts: 2,200
I lived on the Gulf Coast, south of Houston for 25 years........u reeeaaalllyyy need a good a/c system. Sorry, I can't help any with regard to those other types of refrigerants.....just don't know anything about 'em, where to get 'em. Are those other refrigerants only available on the Internet?

I've read/heard the stories about R134a not being as efficient as R12 BUT, several years ago, I converted a '90 Chevy P/U from R12 to R134a and it would freeze your butt off, after the conversion. I did have a professional pull a vacuum and charge the system, after I did the conversion. Again, after overhauling the XJ a/c this past June, we see 34F at the center vents (R134a).
djb383 is offline  
post #13 of 18 Old 03-01-2011, 05:22 PM Thread Starter
fedx95
Registered User
1993 XJ Cherokee 
 
Join Date: Nov 2010
Location: miami
Posts: 996
http://www.es-refrigerants.com/produ...rant&Trying=ON

$6 for 6oz of the 12a. I have not sourced out R414 yet. They say it's a direct replacement, so, I might just go for it, unless anyone else has tried it and had bad experiences
fedx95 is offline  
post #14 of 18 Old 03-01-2011, 06:05 PM
AeroSync
Registered User
2012 JK Wrangler 
 
Join Date: Oct 2010
Location: Miami
Posts: 231
Hey man, sorry for the Off Topic, but where in Miami are you? I am also in Miami (Doral).

As for the A/C, I know what you mean about the humidity here in Miami. Mine cools nicely, but on hot days I have to move the lever all the way to setting 4 and move all the vents towards me.
AeroSync is offline  
post #15 of 18 Old 03-01-2011, 07:10 PM
djb383
Registered User
1998 XJ Cherokee 
 
Join Date: Jan 2010
Location: The Republic of TEXAS
Posts: 2,200
Quote:
Originally Posted by fedx95 View Post
http://www.es-refrigerants.com/produ...rant&Trying=ON

$6 for 6oz of the 12a. I have not sourced out R414 yet. They say it's a direct replacement, so, I might just go for it, unless anyone else has tried it and had bad experiences
Are u set up with the vacuum pump and manifold/gauges?
djb383 is offline  
Reply

Tags
a/c , air conditioning , cherokee , cold

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Any Experience with Teraflex "grand Up" coil conversion? underpowered XJ Cherokee Technical Forum 2 10-25-2010 05:44 PM
R12 to R134 conversion JustPlayin XJ Cherokee Technical Forum 12 06-01-2010 08:26 PM
WJ Crossover steering conversion, "done"..question HeavyMetal XJ Cherokee Technical Forum 6 02-13-2009 06:21 AM
Well this fenders "Shot". Literally. Can it be fixed? Element96x XJ Cherokee Technical Forum 46 02-05-2009 08:54 PM
AC R134 Conversion cajunbull61 XJ Cherokee Technical Forum 2 04-27-2008 07:53 PM

Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome