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Location: Melbourne
Registered: May 2002
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air-con re'gassing question
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Mon, 16 December 2002 06:29
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Hi! .
I need to get my air conditioning regassed if i want to survive this summer... I have a 1982 TE71 Toyota Trueno. I was told that i need to change to a new kind of gas? Is this relativly straight forward, or do i need to change parts, etc?
Also, if anyone could recommend a place in melbourne (preferably in the east somewhere) i would be very grateful!
thanks!
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Location: Cabramatta, NSW
Registered: May 2002
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Re: air-con re'gassing question
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Mon, 16 December 2002 06:38

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You don't have to convert. You can try to find a place that still has the old gas...
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Location: Melbourne
Registered: May 2002
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Re: air-con re'gassing question
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Mon, 16 December 2002 06:44

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hmmm, in that case should i try and look for a place that will put in the old gas? or should i might as well upgrade?
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Location: Yeppoon/Rockhampton
Registered: September 2002
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Re: air-con re'gassing question
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Mon, 16 December 2002 06:51

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old gas is illegal apparently.
all that should be needed is to do minor modifications to your air con gear and all will be happy..... so i'm told with my air con on my 84 supra. i was told it wasn't going to cost more than $100, gas, labour, parts, etc.
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Location: Melbourne
Registered: May 2002
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Re: air-con re'gassing question
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Wed, 18 December 2002 03:33

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righteo, thanks fellas...
hmm can anyone recommend a place in melbourne?? SE area prefered....
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Location: Adelaide
Registered: May 2002
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Re: air-con re'gassing question
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Wed, 18 December 2002 06:06

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Be carefull when changeing to new gas. Depending on the new type of gas (there are more than one) you may need to change every rubber component in the AC system, as some new gasses will eat the seals designed for the old gas.
It pays to ask ahead of time.
Craig.
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Toymods Board Member
Location: Sydney
Registered: September 2002
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Re: air-con re'gassing question
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Wed, 18 December 2002 21:46

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Stick with the old gas.. R12.. It's colder and more efficient.. The new gas R132? is good, but not as good.. I'm getting mine done with the old.
Quote: | old gas is illegal apparently.
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Correct. But house hold aircon systems still use it.. !!
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I supported Toymods
Location: Central Coast
Registered: May 2002
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Re: air-con re'gassing question
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Thu, 19 December 2002 02:02

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My old Corolla had the old gas, and it was much colder than my new car (the soarer has been converted to the new crap).
I had an air-con place check it out and they just topped it up for me for free
Apparently they just keep the gas in a bottle from when they upgrade customer cars to the new gas.
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I Supported Toymods
Location: melbourne.vic.au
Registered: May 2002
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Re: air-con re'gassing question
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Thu, 19 December 2002 04:12

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I had MA61 Gas recharged 2 times because when they filled my system up with R12 Gas (old gas) the seals were still leaking even though they replaced all the o-rings especally for the R12/13 Gas (approx 12 on the Celica Supra). Since my system had the new O-Rings they took the R12 and placed the R13 Gas (New Gas) in my system as well as fixed the Leak (by placing 2 o-rings on the leak). I haven't had any problems or leaks (to my acknoledgement).
Hope it helps.
Cheers.
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Location: Brisbane
Registered: October 2002
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Re: air-con re'gassing question
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Fri, 20 December 2002 06:59

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I was quoted $250 to get the celica converted to the new gas!
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Location: Sydney
Registered: May 2002
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Re: air-con re'gassing question
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Fri, 20 December 2002 07:14

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Pumpkin wrote on Thu, 19 December 2002 08:46 |
Quote: | old gas is illegal apparently.
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Correct. But house hold aircon systems still use it.. !!
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Thats correct, but any new instillations can't be done with a banned refrigerant such as R12, if you get a leak you are meant to convert it over so that eventually there will be no more CFC refrigerants.
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Toymods Board Member
Location: Sydney
Registered: September 2002
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Re: air-con re'gassing question
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Fri, 20 December 2002 07:51

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Quote: | Thats correct, but any new instillations can't be done with a banned refrigerant such as R12, if you get a leak you are meant to convert it over so that eventually there will be no more CFC refrigerants
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Ok ... you win..
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Location: Adelaide
Registered: May 2002
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Re: air-con re'gassing question
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Fri, 20 December 2002 08:03

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ZZT231 wrote on Thu, 19 December 2002 14:42 | I had MA61 Gas recharged 2 times because when they filled my system up with R12 Gas (old gas).
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they should have put i dye in the gas so u could tell where the leak was coming from
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I Supported Toymods
Location: melbourne.vic.au
Registered: May 2002
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Re: air-con re'gassing question
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Fri, 20 December 2002 09:04

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faulksy wrote on Fri, 20 December 2002 19:03 |
ZZT231 wrote on Thu, 19 December 2002 14:42 | I had MA61 Gas recharged 2 times because when they filled my system up with R12 Gas (old gas).
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they should have put i dye in the gas so u could tell where the leak was coming from
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I am sorry for the "English" but i thought i said that they replaced the seals intitally. And yes the did the dye and yes they found it. That is why they added 2 o-rings to the leaking connection so the gas could not excape.
Cheers.
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Location: Melbourne
Registered: May 2002
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Re: air-con re'gassing question
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Sat, 21 December 2002 07:29

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hmmm well, it's too hot to be driving around without an AC, and i'm a bit short on funds...
think i'll just drive it at night... and drive the 300zx during the day
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Club Member
Location: Sydney, NSW
Registered: May 2002
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Re: air-con re'gassing question
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Sun, 22 December 2002 00:33

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faulksy wrote on Fri, 20 December 2002 19:03 | they should have put i dye in the gas so u could tell where the leak was coming from
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They do... You just need the special kit for it... We have one at work and it looks cool...
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Location: sydney
Registered: May 2002
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Re: air-con re'gassing question
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Sun, 22 December 2002 14:20
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well hello all
being a qualified a/c fitter i may be able to help.
the old gas r12 works better on the old system cos they are made to accommodate for that gas, when the new gas is installed the latent heat of vaporisation of the gas is different which means the the heat(chilled air)taken out of the gas and put into the car as cooled air is allot less. if you were to changed the evaporator inside the car to a bigger one then u would have allot colder air.
as for being illegal well yes but no. Aircraft still use this old r12 gas for their a/c systems and large commercial aircraft use it in the cargo's as a fire extinguisher. the gas is still available but only to people with correct qualifications. the only way for an automotive dealer to obtain r12 is by evacuating an old system before converting it to the new one and storing it. r12 is ozone depleting so it should not be let out into the atmosphere.
now for replacing parts. a new receiver dryer (the round thing at the front with a sight glass) should be fitted as inside the drier is a coalescent which removes water vapor from the system. water in the system can freeze the thermal expansion valve.
to replace the gas the system should be completely evacuated to save the gas. then parts changed. if you want to remain on the old gas then only the drier needs to be changed and you need to find someone who has r12 gas and is willing to do it. if you are going to convert to r134a then the drier, thermal expansion valve, and the valves for putting the gas in need to be changed as the valves are different so as to stop putting the 2 gasses together. a new gas is now available which will mix with the r12 but is very expensive.
hope this has helped abit.
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