What is required for 134a conv.?

[Rudolphrocks]

What all do I need to do to convert my benz to 134a? If I knew what parts I need I could get them at napa (where i work) and save some money. Is any other work requird?

[JimmyL]

Look Out!!!!!!!




Heck, if you work at Napa, the Freeze12 route is at least better than R134A

[Ken300D]

R-134a is the Devil's own flatulance.

Well, relatively speaking, compared to R-12.

Try to avoid doing a conversion - fix the R-12 system. A real R-134a system would involve changing all components to include the condensor and evaporator - those items from an R-12 system are not designed for R-134a characteristics and won't cool as well.

Ken300D

[TX76513]

If you are exploring this option all the information you need is at: http:www.aircondition.com

[signalredcoupe]

There is a HUGE amount of info on this subject here. Most of which is negative to the fact of converting to 134A.
A brief list though would include: proper system oil, orings, receiver dryer, expansion valve, flush, & vacuum pump. You'll find that most will agree that after doing this, the outcome will be less efficient cooling & a harder working compressor-sometimes to failure. I would strongly recommend doing a search & pricing some R-12. Paul.

[tangofox007]

Originally Posted by signalredcoupe

A brief list though would include: proper system oil, orings, receiver dryer, expansion valve, flush, & vacuum pump.

I would also recommend that you install a small refrigerator inside the car. You will want to have plenty of cold drinks on hand to help compensate for the poor performance of R-134a.
And a small electric fan would be helpful for those times when you are caught in stop-and-go traffic or for those days when the temp is over 85 degrees.

[TX76513]

Originally Posted by tangofox007

I would also recommend that you install a small refrigerator inside the car. You will want to have plenty of cold drinks on hand to help compensate for the poor performance of R-134a.
And a small electric fan would be helpful for those times when you are caught in stop-and-go traffic or for those days when the temp is over 85 degrees.

[dmorrison]

Where are you located? In the Southwest, don't do it. In the north, you could do it. But its usually cheaper to get your 609 license and repair your system.
I did the R-134A conversion in my 82 300TD, with the parallell flow condensor. After the brand new compressor failed, I converted back to R12. It just does a better job.

Dave

[Endust]

I did this conversion in my 300D. Its true it will not perform as well as R12 if you leave the stock parts in place. However, I got some good vent temps with some easy mods. The biggest problem with the stock system for 134a is the condenser. The newer 134a systems generaly use a parallel flow condenser which is more efficient. The stock cond in our cars dont dissapte enough heat fast enough. There are PF condensors that fit 123 MB's. If you are going to go through the cost of conversion, that upgrade will get you decent performance. The next point of failure will be the compressor from the higher head temps and pressures but thats not something you can do much about except for buying a new compressor($$$)

All that being said, its SO much more cost effective to reapir and recharge with R12. R12 is not the devil and with 20 bucks and an hour online you too can be certified to buy it. My 240D has a nuked compressor from what I think its a botched 134A conversion and if I find a replacement for cheap, Ill be using R12.