AC Conversions

[kwspony]

Anyone used one of those conversion kits at the auto parts stores? I want to try one on my 92 Ranger. Someone at work said he used one and did not have to change anything other than the freon.

[Broncrick]

Re: AC Conversions

Anyone used one of those conversion kits at the auto parts stores? I want to try one on my 92 Ranger. Someone at work said he used one and did not have to change anything other than the freon.

I wonder how long the system would last. You typically have to change out o rings and the oil....

[kwspony]

Re: AC Conversions

that is what I thought but my friend said he did not have to. I have the DVD from the kit and will watch it today to see how it works.

[CT Performance Inc.]

Re: AC Conversions

IMO don't..just get a new filter dryer and new seals..and refill with R12...it can be found..I've got about 60lbs

Lots of info here:http://www.allpar.com/eek/ac.html

[kwspony]

Re: AC Conversions

my current system isn't working. I had it looked at but it would have cost too much for them to run all their tests befor filling it. I am thinking about doing it though. summer is coming!!!

[Broncrick]

Re: AC Conversions

Theres a place up off Fulton, Hal's 485.9215, thats the place I send guys to. Last time I think it was $35.... Then I buy the parts and fix

[Efibroncoman]

Re: AC Conversions

R12 is stupid expensive, and R134A works just as good. Anyone who tells you otherwise doesn't know how to do A/C work very well. As for the conversion, you need to install the quick disconnects on the old compression style fittings and flush the system. R12 uses mineral oil, R-134a uses ester oil. I can do all the work in my garage, very simple.... It's honestly not rocket science. But the system does need to be able to pull a vacuum, so if there are leaks then they will have to be fixed. Air has moisture in it, any moisture present will decrease the efficiency of your system.

[kwspony]

Re: AC Conversions

I had it charged when I got it running. It worked for 2 years. The third year it would work for awhile, then stop working. Seemed to work fine until it heated up on the way home. I don't think there is any serious leaks though. Can you evacuate my system or should I take it to a shop for that?

[Broncrick]

Re: AC Conversions

Maybe buy now it evacuated itself I have gauges and a vac pump.... Jacob is probably closer though...

[Efibroncoman]

Re: AC Conversions

If it's only working sometimes then it probably leaked down to where the low pressure switch can't decide if it wants to stay closed or open. I can't evacuate it, but if it is already empty, I can do the work and re-charge it... After i make sure there aren't any leaks of course. Many times a slow leak is a bad A/C compressor.

[kwspony]

Re: AC Conversions

well I watched the video and it seems to easy. evacuate the system, install adapters on the valves and fill it. I think I am going to try it soon.

[Fordfreak]

Re: AC Conversions

when gm had us retrofit from 12to 134 they said we had to go to teflon hoses.flush and refill with pag 150 oil and replace the orofice tube,dryer and low press cycle switch as well as put in a bigger condensor. later bulletins were excluded the hose and condensor replacement. my 90 has had 134 in it with just pag and the 134 orofice since 1992 when the compressor took a dump and cools just as good as the 12 when it's working right.

[welndmn]

Re: AC Conversions

For some reason when R134a conversions first came out you HAD to replace the Receiver/dryer, hoses, fittings, oil, flush the system, and swap to the green o-rings. Now, I don't know what had changed, but all you need to do is loctite on some new conversion fittings on your old R12 fittings, suck a vacuum on the system, do the math on how much R134a you need (R134a requires like 25% less) and you're done.

I have everything you may need, but really Harbor Freight sells a decent vacuum pump for cheap, that's about the only thing you really need. I would suggest buying an A/C O-ring kit from Napa and replace your O-rings just because it's cheap and easy. The lines either thread off or have quick connect fittings like the EFI fuel lines.

[Efibroncoman]

Re: AC Conversions

Anytime you crack open an A/C system you should replace the dryer. And the secret to getting the conversion to work good is using 20% less R-134a than what the sticker calls for R-12. I have a digital scale that makes it easy to get the right amount.

[kwspony]

Re: AC Conversions

the DVD did mention the 20% difference. maybe this payday I will buy the kit and try it.