Some AC conversion insight

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Huntervf

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Ok, I just completed a converstion on my 89, from R-12 to R-134. I wanted to post my experience here since I did things a little differently then most.

First off, I work for a dealership, so I have access to a standard AC machine...I know that helps but this info may still be of some use even if you're using the autozone conversion. Whereas people say you're supposed to replace the accumulator when doing the conversion, I didn't and thus far everything as been ok. Also, we've done several R-12 to R-134 conversions at work now and we haven't replaced the accumulator/dryer on any of them. The oldest conversion was done a year ago, and that car is still blowing cold.

For our conversions all we do is install the R-134 ports, replace O-rings, and run compressed air through the lines while they're all disconnected. This obviously REALLY cleans the lines and thus far we've had no troubles in keeping the original accumulator/dryer.

Now, I want to mention that in every conversion we've done, the AC system as been very dead, with absolutely zero charge left in the system. In the case of my 89, the AC hasn't worked for at least 2 years. So for those doing a conversion with an R-12 charge left in your system (even a small one) this may not work.

But for those whose AC system is absolutely dead, I would say you don't necessarily need to change the accumulator...do the converstion, get the lines good and clean, charge it up and see how it works...you can always change the accumulator later if need be. And with R-134 being so cheap (I just paid $3.00/lb at work) you won't be out much $$$ at all.

<small>[ June 09, 2002, 01:35 PM: Message edited by: Huntervf ]</small>
 

Shoboy3

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I have been told you can buy the o-rings at AutoZone. Do you know how many and what sizes I will need? I don't want to drive down to the store and end up buying the wrong size or come back home and not have enough!

Thanks a bunch!
 

Huntervf

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Honestly, I'm not sure about that...I had a friend do the conversion for me and he already had the correct O-rings. I do know that you should have O-rings designed for use in an R-134 system. My advice...pop one of the spring locks apart, remove the O-ring and get a size match. And make sure it's approved for use in an R-134 system.
 

projectSHO89

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My 89 has 4 different sizes of O-rings that I've identified so far. I have the replacement O-ring and spring lock sets in the car. I'll grab them later and get you the numbers so you can get them from AutoZone like I did.

Steve
 

jthomas68

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Me too!BTW,has anyone ever seen the conversion kit that you can buy?It comes with o rings,new fittings,a small can,and some guages.We have it here at Advance Auto,i think i`ve even seen it at Walmart.
 

projectSHO89

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Me too!BTW,has anyone ever seen the conversion kit that you can buy?It comes with o rings,new fittings,a small can,and some guages.We have it here at Advance Auto,i think i`ve even seen it at Walmart
Ah! The infamous interDynamics "death kit".

Steve
 

projectSHO89

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My 89 has 4 different sizes of O-rings that I've identified so far. I have the replacement O-ring and spring lock sets in the car. I'll grab them later and get you the numbers so you can get them from AutoZone like I did.
OK, here is the info on them.

Made by Factory Air, called "Ford Springlock O-rings & Garter Springs." Each blister pack contains 4 green O-rings of that size and 2 replacement garter springs. Cost was $2.49 per pack.

3/8 " #26220
1/2 " #26221
5/8 " #26222
3/4 " #26223

I have not been able to find these on the AZ website. Also, several counter persons there had no idea what I was talking about, until I found one that had been there last summer and knew exactly what I needed. He got a ladder and retrieved them from the top shelf.

Your mileage at your local AZ is likely to vary.....

Steve
 

Denny

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Chris, last year before I did the conversion on my GL, I asked some techs at work up at MSU, they said that all I needed was to run the lines clean and the dryer would be fine, flush it out with air if need be and I'd be set. So I didn't buy a dryer for it. I did the conversion, and it was nice to have nice cold air back in the old bull. It lasted all summer. However methinks it was the main cause of my tranny demise, right away, I started having trans problems that went away when the air wasn't on, but later on the trans would pretty much die and that was it for the bull...
Well I started up the 92 just the other day, and the air was blowing out cold immediately, it was working just like it did last year, makes me want to fix her up now since it's as fast as my SHO anyways :p
 

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