Date: Sun, 04 Sep 2005 19:03:57 GMT From: "James Sweet" <jamessweetnospamail.com> Subject: Re: C900 A/C charge
"NeedforSwede2" <carl.robsonnospamcing-czechs.com> wrote in message news:MPG.1d84d62751b9439e989a35nospam.individual.net... > In article <fb949eb906855c72fb692af2d87fac42 > nospamlhost.talkaboutautos.com>, johnhnospamam.shoal.net.au says... > >James Sweet wrote: > > > >>I was dismayed to find that the replacement reciever/dryer lacks a sight > >>glass, does anyone know the recommended refrigerant quantity for > >charging > >>this system ('88 900s) with R-134a? > > > >1.0kg for R12 if you know the proportional change for R134A to do the > >corrective maths. Sorry if that's no help. Cheers > > > > > For an easier swap over, consider R49/R314/RS24 rather than R134A. > Compatible with old and modern synthetic oils, filled as a liquid rather > than gas, and about 50-80% volume of the old R12. I used it in the > Celica. It rocks. > -- The components of it also leak out at disproportionate rates, a lot of places won't touch a system that's been charged with a nonstandard refrigerant, and it's harder to find than 134. At any rate I did the conversion last weekend, charged it up with 24 oz of 134 and once again it blows cold. I still wish the filter/dryer had a sight glass but the air is cold, the high side pressure is reasonable, and it's not making any unusual noises so I'm happy. It's a nice system, uses a TXV instead of a silly fixed orifice so the charging is not nearly as critical, and the evaporator is easily accessible in case of bacterial or fungal growth.
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