Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #16  
Old 04-22-2003, 11:14 AM
csnow's Avatar
Registered User
 
Join Date: May 2002
Location: Mass
Posts: 1,127
This topic is always similar to shouting "fire" in a crowded theater.
So many strong opinions, confusion, and speculation.

What enquiring minds would probably like to know is this:
Has anyone used a 100% Hydrocarbon (such as propane and/or butane) refrigerant in any vehicle, and did it work?
__________________
1986 300E 5-Speed 240k mi.
Reply With Quote
  #17  
Old 04-22-2003, 11:42 AM
Registered User
 
Join Date: Jun 2000
Location: Plano, TX
Posts: 2,502
There used to be an "alternative refrigerants" bulletin board over at aircondition.com. Alternative should be read as "roll your own out of grill gas." There were many positive testimonials, so yes, hydrocarbon refrigerants work just fine. I understand hydrocarbons are quite commonly used in refrigerators and/or home air conditioners in Europe. About the only complaint I recall is that hydrocarbons don't perform quite as well as CFC/HFC/etc. refrigerants in extremely hot temperatures - think Phoenix.

I've been playing around with R406a in my 124 wagon. (Autofrost is the brand name - http://www.autofrost.com ) It's a mixture of R-22, R-142b, and about 4% butane (forget the R-number for butane). It has the same pressure/temperature curve as R-12, but is capable of carrying more BTUs. In 18 months it hasn't destroyed the system, in fact it works fabulously. I drove the wagon down to the the hill country last weekend, and the a/c produced 30F duct temperatures with no problem. (I modified the ETR to permit the evaporator to get colder before cycling off the compressor.) Shoot, the thing was too darn cold, believe it or not.

Biggest problem for R406a is that it's a bit hard on o-rings. You need to hunt down and replace everything with neoprene. It can be a bit of a chore. Being a blend, it also tends to fractionate as it leaks, but this seems to be a bigger problem in theory than in practice.

In general I agree with the ever eloquent Larry Bible - stick with R-12. However, my personal stockpile of R-12 ran out two years ago. I don't care to find brittle o-rings and leaky evaporator joints using R-12 at $22/lb. Check the pricing at http://www.refrigerantsales.com - a cylinder of R-12 is $655, an equivalent cylinder of R-406a is $195. Wasn't a difficult choice for me to make.

- JimY
Reply With Quote
  #18  
Old 04-22-2003, 12:23 PM
csnow's Avatar
Registered User
 
Join Date: May 2002
Location: Mass
Posts: 1,127
Interesting comments on the r406. Thanks.
Of course, since it contains r22, one would still need a 609 license to buy it, which is a barrier to entry.
__________________
1986 300E 5-Speed 240k mi.
Reply With Quote
  #19  
Old 04-22-2003, 01:18 PM
Rick Miley's Avatar
Spark Free
 
Join Date: Jun 1999
Location: Tampa, FL
Posts: 3,086
609 Certification

Thanks to LarryBible, I got mine at http://imaca.org in under an hour for $15. Can't beat a deal like that.
__________________
Rick Miley
12 Honda Pilot
14 Tesla Model S
Former MB: 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 04:05 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page