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Old 11-07-2005, 19:31   #1 (permalink)
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Old Air conditioning

I have a 1990 EA which has the old style air conditioning system. To get it to work I've been told I need a retrofit and new o-rings, and possibly new condensor and evaporator. Does anyone know the cheapest solution for me since I can do all work myself except for testing and regassing. The retrofit kit parts and o-rings would be a good start, to bring it up to legal... cheers!

EDIT: I should clarify, I'm asking if anyone knows where I can get the retrofit parts and the other AC parts on the cheap
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Old 11-08-2005, 02:35   #2 (permalink)
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Re: Old Air conditioning

You could retrofit to R134A gas, but it would be better in my opinion to use HR12 or ER12 (same stuff, different brand). The system pressures with R134A would be fairly high and not as efficient as with ER or HR12. As a precaution change the TX valve o rings, and fit a new receiver drier. A regass with 390grams of HR /ER12 shouldn't cost a whole lot. Pull the o rings and drier off for samples when you go to an auto parts supplier.
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Old 11-09-2005, 04:21   #3 (permalink)
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Re: Old Air conditioning

G'day,
done a few of these...not TOO hard.
If your handy with tools its pretty Easy.

O-rings. the standard ones will work, but R-134 will deteriorate them rather quickly leading to refrigerant loss. As i have my own shop, i bought a kit of R-134 o-rings from repco for about 30 bucks. they are easily recognised as they are green.

Compressor. the standard compressor will handle R-134 but the boffins highly recomend changing the oil and seals. I had this done, and now mine rattles. My recomendation here is to get one from a wreckers off an EBII or later (that was original with R-134)

Tx Valve. I have not changed mine and it works just fine. (keep in mind with the O-rings that they are on BOTH sides of the TX)

Condensor. I am still running the original R-12 unit and no problems.

reciever/dryer. the boffins and law says this needs replacing. there is no actual difference in the unit itself. ( i did my R-134 upgrade after an accident, so i needed one anyway).

Pressure lines. Leave as is. But do check the flexible one under the LH headlamp....there is a slip joint here that is prone to leakage...if it is leaking replace BOTH sides of it.

Gassing points. R-12 uses what is pretty much a tyre valve fitting, whereas R-134 has its own definitive fitting. The good news, is that in most cases this fitting can be removed and fitted to the R-12 fitting. this needs to be done or it can't be gassed. Most gas-guys will carry a pair, fit them gas your car and then remove them...best to have your own i reckon...remember i started this sentence with most. You should be able to get these off another car from the wreckers.

hope this helps

Jas
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Old 11-15-2005, 00:54   #4 (permalink)
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Re: Old Air conditioning

I was always lead to believe that the dryer is rendered useless after being exposed to air for more than half an hour, which is why they need replacing when the system is opened.

I've been told by assorted AC specialists that the law requires me to get the R134 gassing point. I have not done a retro fit because of the cost I have been quoted for the "retro fit kit" of $250 including fitting. Either it's a gold plated fitting and is fitted by royalty, or it's a rip off. Unless someone in the business knows otherwise and can explain to me why it's $250.

I had a look at HR-12 a while ago and I thought it was illegal to use hydrocarbons as a refidgerant??

Thanks for the tips I'll look into it...
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Old 11-15-2005, 04:03   #5 (permalink)
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Re: Old Air conditioning

G'day,
HR-12 is new to me.....no i don't know it all.
the original was R-12
this was replaced with R-134, then R-12 got TOTALLY outlawed and all R-12 systems were regassed with ER-12. what the E means is anyones guess, but it was supposed to be envirmentally friendly.

One would have to assume that HR-12 is the natural development of ER-12.

The gassing poing kit....that price is RUBBISH!!!!! why are they charging so much!!! the parts would be ten bucks, the labour ten minutes.....easier than changing a wheel nut!

I am about to upgrade computers, so maybe i might be able to be a little more helpfull.....i.e this puter won't talk to my camera. email me with a rmeinder middle of next week when i have the new system fully setup and i can send pics etc...might even add a page to my website.
email is webmaster@jasonpigdon.com.

Cheers
Jas
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Old 11-15-2005, 04:05   #6 (permalink)
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Re: Old Air conditioning

Oops forgot half my response.
where are you located? i can most likley get you a gassing kit (used) and express posted, including a small charge for my time for less than $50.00

Cheers
Jas
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Old 11-17-2005, 16:33   #7 (permalink)
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Re: Old Air conditioning

Hi Jas, what's a gassing kit? I'm at the gold coast, qld. Yes my thoughts exactly about the 'retro fit kit' price. I believe it's just a way they can make money because the law requires it! Someone let me know if otherwise!

BTW Jas, your problem of computer not talking to camera, this sounds obscure but some motherboards have strict jitter correction for USB and if the usb device doesn't have it then it wont talk... you can sometimes get around this problem with a USB hub that has built in jitter correction, plug the device into the hub, then the hub into the computer...
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Old 11-18-2005, 04:43   #8 (permalink)
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Re: Old Air conditioning

G'day,
The gassing kit, is the required fittings for the hoses. The connectors are different for R-12 and R-134.

Re. my puter. well i had a tits up about 14 months ago, that sent back to an old computer....so old it doesn't support USB at ALL!
But since that post i have purchased a new box.. P4-3gig with all the goodies.
I haven't tested the camera, as still am setting up things the way i want...all the attatchments and software...should be testing the camera this weekend.

Jas
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Old 11-18-2005, 20:18   #9 (permalink)
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Re: Old Air conditioning

Quote:
Originally Posted by Bidju
I have not done a retro fit because of the cost I have been quoted for the "retro fit kit" of $250 including fitting. Either it's a gold plated fitting and is fitted by royalty...
Costs that much because it has more than a fitting in it. Also comes with the o-rings, reciever drier, the different oil for the compressor, pressure switch for the compressor and of course the fittings.
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Old 11-22-2005, 16:13   #10 (permalink)
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Re: Old Air conditioning

No the oil comes as part of the gassing cost. I've been quoted for a "Retro fit" and then some of those things on top of that. So they wanted to fleece about $440 out of me instead of (and correct me if I'm wrong but these are generous prices):

Fittings $50
O-rings $10
Dryer $45
Pressure switch $40
Regas (includes oil) $100

Parts total = $245

$200 for labour?

How about I fit it all (cost $145) and they regas it for $100
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