I'm getting a few e-mail of how I did my conversion last year, so i thought I would go ahead a post this. As it gets hotter more people are trying to do this.
The 134a was so much cheaper and it was nothing
> to loose a couple of cans breaking the systems apart to see what was going
> wrong. In my case it was a clogged expansion valve. the drier had gone bad
> and dumped everything into the expansion valve. Below is what I did.
> The drier I used is a
> SCS/Frigette
> Part #
> 207 805
> XH9 DESICCANT
> WWW.scsfrigette.com
> Purchased at a local ACdelco AC shop for $49.00
>
> Expansion valve
> Murray Climate Control
> PART#
> MRY 38683
> THP AC3801C
> UPC 9636138683
> NO WEB SITE THAT I CAN FIND
> Purchased at O'Riely Auto Parts for $26.00
>
> High and Low side 134A connectors,
> high side $6.99,
> Low Side $15.00.
> Purchased at NAPA
> DON'T buy the Aluminum cheap ones.
>
> 3 cans of 134A Wal-Mart $4.88 each I only used 2
>
> 134A O rings Assorted $5.99 Autozone
>
> 2 8oz cans of ester oil
>
> I changed all O rings. took out the 2 Schratter valves and replaced them
> with the 134A connectors.
>
> I used an Aquarium air hose to drain the oil from the compressor. I
> siphoned it out, got about 8 OZ. added the ester until it would not take
> any more about 11OZ. Manual call for 330CC or 11OZ. I used a turkey baster
> to add the oil to the compressor.
>
> Drier remember not to open or connect it to the system until you are ready
> to Evacuate.
>
> Make sure the oil drier did not dump any Desiccant in to the hose going to
> the expansion valve. this is what killed me.
>
> Yesterday to was 93degrees here in traffic I got 60 degrees high way 50
> degrees. all reading from the lower vent.
>
> This evening 83 degrees, 86 heat index 40 Degrees at the lower vent.
>
> I have noticed one thing. Before my car ran at right below 195 on the
> highway, traffic right over 195, no more than the width of the needle. Now
> highway the needle is mid way between the 195 and the next hash mark. In
> traffic it stays on the hash mark. This mark is between 195 and 250.
>
> I will double check the car tomorrow to see if I have developed an over
> heating problem that may be unrelated to the AC. I did get a little air
out
> of the front radiator when I got home tonight. I'm going to drive it
> without the AC on.
>
> Per Neville in England I'm going to over fill my expansion tank. It's been
> about 2,000 miles since I have done this. When I had this over heating
> problem before, over filling fixed it. It cooked off what it didn't need
> and has been find ever since until now.
>
> OF course I am not responsible for anything that might go wrong with your
> car in this process. This is only what I did to make it happen. And to all
> your Ferrari Techs out there, please excuse my ignorance if I have said
> anything that sounds stupid.. Thank God I got some common sense from my
> father. I wish he were still here with me to take a drive.
>
> Kelly Vince
> Do you have the Passion?
> Tifosi
The 134a was so much cheaper and it was nothing
> to loose a couple of cans breaking the systems apart to see what was going
> wrong. In my case it was a clogged expansion valve. the drier had gone bad
> and dumped everything into the expansion valve. Below is what I did.
> The drier I used is a
> SCS/Frigette
> Part #
> 207 805
> XH9 DESICCANT
> WWW.scsfrigette.com
> Purchased at a local ACdelco AC shop for $49.00
>
> Expansion valve
> Murray Climate Control
> PART#
> MRY 38683
> THP AC3801C
> UPC 9636138683
> NO WEB SITE THAT I CAN FIND
> Purchased at O'Riely Auto Parts for $26.00
>
> High and Low side 134A connectors,
> high side $6.99,
> Low Side $15.00.
> Purchased at NAPA
> DON'T buy the Aluminum cheap ones.
>
> 3 cans of 134A Wal-Mart $4.88 each I only used 2
>
> 134A O rings Assorted $5.99 Autozone
>
> 2 8oz cans of ester oil
>
> I changed all O rings. took out the 2 Schratter valves and replaced them
> with the 134A connectors.
>
> I used an Aquarium air hose to drain the oil from the compressor. I
> siphoned it out, got about 8 OZ. added the ester until it would not take
> any more about 11OZ. Manual call for 330CC or 11OZ. I used a turkey baster
> to add the oil to the compressor.
>
> Drier remember not to open or connect it to the system until you are ready
> to Evacuate.
>
> Make sure the oil drier did not dump any Desiccant in to the hose going to
> the expansion valve. this is what killed me.
>
> Yesterday to was 93degrees here in traffic I got 60 degrees high way 50
> degrees. all reading from the lower vent.
>
> This evening 83 degrees, 86 heat index 40 Degrees at the lower vent.
>
> I have noticed one thing. Before my car ran at right below 195 on the
> highway, traffic right over 195, no more than the width of the needle. Now
> highway the needle is mid way between the 195 and the next hash mark. In
> traffic it stays on the hash mark. This mark is between 195 and 250.
>
> I will double check the car tomorrow to see if I have developed an over
> heating problem that may be unrelated to the AC. I did get a little air
out
> of the front radiator when I got home tonight. I'm going to drive it
> without the AC on.
>
> Per Neville in England I'm going to over fill my expansion tank. It's been
> about 2,000 miles since I have done this. When I had this over heating
> problem before, over filling fixed it. It cooked off what it didn't need
> and has been find ever since until now.
>
> OF course I am not responsible for anything that might go wrong with your
> car in this process. This is only what I did to make it happen. And to all
> your Ferrari Techs out there, please excuse my ignorance if I have said
> anything that sounds stupid.. Thank God I got some common sense from my
> father. I wish he were still here with me to take a drive.
>
> Kelly Vince
> Do you have the Passion?
> Tifosi
