anyone convert to r134?

CharlesCarino · 06-20-2008, 03:57 PM

my ac compressor just crapped out after 29 years and 110k miles. my mb indep mech suggest converting the whole thing to r134... new compress new everything (whatever that maybe) for $900ish....

just wondering if anyone here has done it..... car run any different?

ill search the other forums but this one was my first stop...

thanks

ohlord · 06-20-2008, 09:55 PM

http://www.autohausaz.com/search/pro...C%20Compressor
new drier,new lines ,the old ones will be contaminated flush everything that can not be removed,parts labor and r134a fill at $900 seems a bit high.If he installs an electric fan for the condenser it still seems high.Get some quotes from an a/c place.Very little change my 99 blows 38f air at idle on a hot day on low.

POS · 06-21-2008, 07:40 PM

Actually, I think $900 is about right for a new system. The w123s never cooled all that well with the R12 systems (at least not here in Texas), so going to a R134 system would make it even less cool.

You may do as you wish for Missouri, but I like all my old Benzes to have the R12 - it doesn't cost that much more than the R134 when you add up the total bill.

cheapold280CE · 06-23-2008, 08:06 PM

why not try freeze 12, I heard it acts just like R12 so you don't have to change all the components just do some cleaning.

check out this page
http://www.dieselgiant.com/repairyourac.htm

You will never get 38 degrees with R134 unless you change your condensor to a more effective one.

240D 3.0T · 06-24-2008, 04:48 AM

Freeze 12 is nothing more than 80% R-134a and 20% HCFC-142b. Its still not completely compatible with R-12's mineral oil.

tanktube67 · 09-14-2008, 07:13 PM

lets see compressor, drier, expansion valve, flush the system the R134 Freon and labor for $900,00 sounds about right,

tanktube67 · 09-14-2008, 07:15 PM

Quote:

after 29 years and 110k miles

If I were you, I would replaced the a/c hoses 2

Benzguy604 · 11-07-2008, 09:01 PM

I have done the conversion a couple of years ago.And all I replaced was the high and low pressure valves on each hose.I never had a problem with the A/C since this retro fit,my pressure is stable and of course no leaks! and plenty of COLD air.
This was done on my 1983 126.
Regards
Big Dan
Vancouver Canada Eh!

tanktube67 · 11-26-2008, 01:28 PM

Quote:

Originally Posted by Benzguy604

I have done the conversion a couple of years ago.And all I replaced was the high and low pressure valves on each hose.I never had a problem with the A/C since this retro fit,my pressure is stable and of course no leaks! and plenty of COLD air.
This was done on my 1983 126.
Regards
Big Dan
Vancouver Canada Eh!

I have done the same thing on some of my cars

06-20-2008, 03:57 PM	#1
CharlesCarino Super Member Join Date: Jul 2004 Location: Detriot, Michigan Posts: 596	anyone convert to r134? my ac compressor just crapped out after 29 years and 110k miles. my mb indep mech suggest converting the whole thing to r134... new compress new everything (whatever that maybe) for $900ish.... just wondering if anyone here has done it..... car run any different? ill search the other forums but this one was my first stop... thanks __________________ C320 l Argos (broken) l Bi-Xenon l Clear Fog Lens l 07 Smart-Key l 06 Sport Grill l AMG-style Wood Steering Wheel l Euro-Comand l K&N Filters l OEM Roof Rack l Flat Hood Badge l OEM All-Season Floor Mats l OEM Aluminum Sport Pedals l Clear Side Markers l w220 tail lights l H&R springs -front- l H&R cupkit -rear- l E320 l K&N Filter l Keyless Entry l Remote Start l 17" OEM Sador Rims l Bilstein HD l OEM Roof Rack l 300D l 15" Mille Miglia Bello l OEM Roof Rack l

06-20-2008, 09:55 PM	#2
ohlord MBWorld Fanatic! Join Date: Apr 2007 Location: north of seattle Posts: 3,463	Compressor http://www.autohausaz.com/search/pro...C%20Compressor new drier,new lines ,the old ones will be contaminated flush everything that can not be removed,parts labor and r134a fill at $900 seems a bit high.If he installs an electric fan for the condenser it still seems high.Get some quotes from an a/c place.Very little change my 99 blows 38f air at idle on a hot day on low.

06-21-2008, 07:40 PM	#3
POS Member Join Date: Nov 2005 Location: Texas Posts: 114	Actually, I think $900 is about right for a new system. The w123s never cooled all that well with the R12 systems (at least not here in Texas), so going to a R134 system would make it even less cool. You may do as you wish for Missouri, but I like all my old Benzes to have the R12 - it doesn't cost that much more than the R134 when you add up the total bill. __________________ 1983 Black 500SL AMG with 5-spd manual - 44,000 miles 1982 Blue-grey 300D - 64,000 miles

06-23-2008, 08:06 PM	#4
cheapold280CE Newbie Join Date: Jan 2008 Posts: 6	why not try freeze 12, I heard it acts just like R12 so you don't have to change all the components just do some cleaning. check out this page http://www.dieselgiant.com/repairyourac.htm You will never get 38 degrees with R134 unless you change your condensor to a more effective one. Last edited by cheapold280CE; 06-23-2008 at 08:10 PM.

09-14-2008, 07:13 PM	#6
tanktube67 MBWorld Fanatic! Join Date: Nov 2007 Location: California Posts: 2,073	lets see compressor, drier, expansion valve, flush the system the R134 Freon and labor for $900,00 sounds about right, __________________ 05 BMW 545i (sold) 04 G35 Coupe/lots of Mods (sold)

06-24-2008, 04:48 AM	#5
240D 3.0T Banned Join Date: Apr 2006 Location: Federal Heights, CO Posts: 507	Freeze 12 is nothing more than 80% R-134a and 20% HCFC-142b. Its still not completely compatible with R-12's mineral oil.

11-07-2008, 09:01 PM	#8
Benzguy604 Newbie Join Date: Nov 2008 Location: British Columbia,Canada Posts: 13	I have done the conversion a couple of years ago.And all I replaced was the high and low pressure valves on each hose.I never had a problem with the A/C since this retro fit,my pressure is stable and of course no leaks! and plenty of COLD air. This was done on my 1983 126. Regards Big Dan Vancouver Canada Eh! __________________ 1983 Mercedes Benz 300D Turbo Diesel 200,710 KM W 123 For sale 1983 Mercedes Benz 300SD Turbo Diesel 576,500 KM W 126 For sale This web site is dedicated to all Mercedes Benz Diesel DIY www.benzguy.piczo.com Remember: Everyone seems normal until you get to know them. Lets all slow down a bit and enjoy the ride! Know your limit,play within it!

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