Techno Question: AC system dryer insulation
Dear Forum, This is a trivial question about the dryer in the Pantera AC system. Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced? Curious, Chuck Engles Dear Forum, This is a trivial question about the dryer in the Pantera AC system. Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced? Curious, Chuck Engles
Chuck, The dryer should be replaced any time the A/C system is opened up, they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it. Julian
On May 29, 2025, at 09:15, Charles Engles <cengles@cox.net> wrote:
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@server.detomasolist.com
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Showing my considerable ignorance about A/C systems here, but why did all cars have insulated dryers before and why wouldn’t you treat your new dryer the same way? Mike Sent from my iPad
On May 29, 2025, at 10:07, Julian Kift <julian_kift@hotmail.com> wrote:
Chuck,
The dryer should be replaced any time the A/C system is opened up, they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it.
Julian
On May 29, 2025, at 09:15, Charles Engles <cengles@cox.net> wrote:
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@server.detomasolist.com
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The insulation is for improved efficiency. Its purpose is to insulate the dryer from the engine bay heat. The colder the return temp to the compressor the colder the outlet temperature is at the vent. You can buy some Armaflex online, cut it to fit and glue it on or use zip ties. Your home AC return line is the one that needs to be kept insulated since it runs 24/7 in the summer. LOWES and HOME DEPOT have the material for the lines 3/4" and 1/2" in 6' lengths. Your dryer will need a much larger diameter and when you find it it will be sold in bulk and you will have enough left over to do all the cars still on the road. Or buy a 6' one and cut several pieces to fit. It will be ugly but effective. In a message dated 5/29/2025 12:18:54 PM Central Daylight Time, detomaso@server.detomasolist.com writes: Showing my considerable ignorance about A/C systems here, but why did all cars have insulated dryers before and why wouldn’t you treat your new dryer the same way? Mike Sent from my iPad
On May 29, 2025, at 10:07, Julian Kift <julian_kift@hotmail.com> wrote:
Chuck,
The dryer should be replaced any time the A/C system is opened up, they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it.
Julian
On May 29, 2025, at 09:15, Charles Engles <cengles@cox.net> wrote:
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@server.detomasolist.com
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On May 29, 2025, at 10:07, Julian Kift <[1]julian_kift@hotmail.com> wrote:
Chuck,
The dryer should be replaced any time the A/C system is opened up,
_______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. The insulation is for improved efficiency. Its purpose is to insulate the dryer from the engine bay heat. The colder the return temp to the compressor the colder the outlet temperature is at the vent. You can buy some Armaflex online, cut it to fit and glue it on or use zip ties. Your home AC return line is the one that needs to be kept insulated since it runs 24/7 in the summer. LOWES and HOME DEPOT have the material for the lines 3/4" and 1/2" in 6' lengths. Your dryer will need a much larger diameter and when you find it it will be sold in bulk and you will have enough left over to do all the cars still on the road. Or buy a 6' one and cut several pieces to fit. It will be ugly but effective. In a message dated 5/29/2025 12:18:54 PM Central Daylight Time, detomaso@server.detomasolist.com writes: Showing my considerable ignorance about A/C systems here, but why did all cars have insulated dryers before and why wouldn’t you treat your new dryer the same way? Mike Sent from my iPad they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it.
Julian
On May 29, 2025, at 09:15, Charles Engles <[2]cengles@cox.net>
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and
ready
for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [3]detomaso@server.detomasolist.com To unsubscribe send an email to [4]detomaso-leave@server.detomasolist.com
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_______________________________________________
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wrote: list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [7]detomaso@server.detomasolist.com To unsubscribe send an email to [8]detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. mailto:julian_kift@hotmail.com 2. mailto:cengles@cox.net 3. mailto:detomaso@server.detomasolist.com 4. mailto:detomaso-leave@server.detomasolist.com 5. mailto:detomaso@server.detomasolist.com 6. mailto:detomaso-leave@server.detomasolist.com 7. mailto:detomaso@server.detomasolist.com 8. mailto:detomaso-leave@server.detomasolist.com
Dear John, Ah-ha! Armaflex looks like exactly what I need. Thank you. Warmest regards, Chuck Engles -----Original Message----- From: JOHN NEAL via DeTomaso [mailto:detomaso@server.detomasolist.com] Sent: Friday, May 30, 2025 9:26 AM To: mikeldrew@aol.com; julian_kift@hotmail.com Cc: detomaso@server.detomasolist.com Subject: [DeTomaso] Re: Techno Question: AC system dryer insulation The insulation is for improved efficiency. Its purpose is to insulate the dryer from the engine bay heat. The colder the return temp to the compressor the colder the outlet temperature is at the vent. You can buy some Armaflex online, cut it to fit and glue it on or use zip ties. Your home AC return line is the one that needs to be kept insulated since it runs 24/7 in the summer. LOWES and HOME DEPOT have the material for the lines 3/4" and 1/2" in 6' lengths. Your dryer will need a much larger diameter and when you find it it will be sold in bulk and you will have enough left over to do all the cars still on the road. Or buy a 6' one and cut several pieces to fit. It will be ugly but effective. In a message dated 5/29/2025 12:18:54 PM Central Daylight Time, detomaso@server.detomasolist.com writes: Showing my considerable ignorance about A/C systems here, but why did all cars have insulated dryers before and why wouldn’t you treat your new dryer the same way? Mike Sent from my iPad
On May 29, 2025, at 10:07, Julian Kift <julian_kift@hotmail.com> wrote:
Chuck,
The dryer should be replaced any time the A/C system is opened up, they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it.
Julian
On May 29, 2025, at 09:15, Charles Engles <cengles@cox.net> wrote:
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@server.detomasolist.com
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Chuck, You can probably find dryer foam at any auto parts store? Mike Sent from my iPhone
On May 30, 2025, at 07:38, Charles Engles <cengles@cox.net> wrote:
Dear John,
Ah-ha! Armaflex looks like exactly what I need. Thank you.
Warmest regards, Chuck Engles
-----Original Message----- From: JOHN NEAL via DeTomaso [mailto:detomaso@server.detomasolist.com] Sent: Friday, May 30, 2025 9:26 AM To: mikeldrew@aol.com; julian_kift@hotmail.com Cc: detomaso@server.detomasolist.com Subject: [DeTomaso] Re: Techno Question: AC system dryer insulation
The insulation is for improved efficiency. Its purpose is to insulate the dryer from the engine bay heat. The colder the return temp to the compressor the colder the outlet temperature is at the vent. You can buy some Armaflex online, cut it to fit and glue it on or use zip ties. Your home AC return line is the one that needs to be kept insulated since it runs 24/7 in the summer. LOWES and HOME DEPOT have the material for the lines 3/4" and 1/2" in 6' lengths. Your dryer will need a much larger diameter and when you find it it will be sold in bulk and you will have enough left over to do all the cars still on the road. Or buy a 6' one and cut several pieces to fit. It will be ugly but effective. In a message dated 5/29/2025 12:18:54 PM Central Daylight Time, detomaso@server.detomasolist.com writes: Showing my considerable ignorance about A/C systems here, but why did all cars have insulated dryers before and why wouldn’t you treat your new dryer the same way?
Mike
Sent from my iPad
On May 29, 2025, at 10:07, Julian Kift <julian_kift@hotmail.com> wrote:
Chuck,
The dryer should be replaced any time the A/C system is opened up, they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it.
Julian
On May 29, 2025, at 09:15, Charles Engles <cengles@cox.net> wrote:
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@server.detomasolist.com
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_______________________________________________
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_______________________________________________
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Well apparently, you can just buy 1' lengths of this stuff sold as A/C accumulator foam..... Julian ________________________________ From: JOHN NEAL <jrnealjr@aol.com> Sent: Friday, May 30, 2025 7:26 AM To: mikeldrew@aol.com <mikeldrew@aol.com>; julian_kift@hotmail.com <julian_kift@hotmail.com> Cc: detomaso@server.detomasolist.com <detomaso@server.detomasolist.com> Subject: Re: [DeTomaso] Re: Techno Question: AC system dryer insulation The insulation is for improved efficiency. Its purpose is to insulate the dryer from the engine bay heat. The colder the return temp to the compressor the colder the outlet temperature is at the vent. You can buy some Armaflex online, cut it to fit and glue it on or use zip ties. Your home AC return line is the one that needs to be kept insulated since it runs 24/7 in the summer. LOWES and HOME DEPOT have the material for the lines 3/4" and 1/2" in 6' lengths. Your dryer will need a much larger diameter and when you find it it will be sold in bulk and you will have enough left over to do all the cars still on the road. Or buy a 6' one and cut several pieces to fit. It will be ugly but effective. In a message dated 5/29/2025 12:18:54 PM Central Daylight Time, detomaso@server.detomasolist.com writes: Showing my considerable ignorance about A/C systems here, but why did all cars have insulated dryers before and why wouldn’t you treat your new dryer the same way? Mike Sent from my iPad
On May 29, 2025, at 10:07, Julian Kift <julian_kift@hotmail.com<mailto:julian_kift@hotmail.com>> wrote:
Chuck,
The dryer should be replaced any time the A/C system is opened up, they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it.
Julian
On May 29, 2025, at 09:15, Charles Engles <cengles@cox.net<mailto:cengles@cox.net>> wrote:
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com<mailto:detomaso@server.detomasolist.com> To unsubscribe send an email to detomaso-leave@server.detomasolist.com<mailto:detomaso-leave@server.detomasolist.com>
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_______________________________________________
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On May 29, 2025, at 10:07, Julian Kift <[1]julian_kift@hotmail.com> wrote:
Chuck,
The dryer should be replaced any time the A/C system is opened up,
_______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com<mailto:detomaso@server.detomasolist.com> To unsubscribe send an email to detomaso-leave@server.detomasolist.com<mailto:detomaso-leave@server.detomasolist.com> To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. Well apparently, you can just buy 1' lengths of this stuff sold as A/C accumulator foam..... Julian __________________________________________________________________ From: JOHN NEAL <jrnealjr@aol.com> Sent: Friday, May 30, 2025 7:26 AM To: mikeldrew@aol.com <mikeldrew@aol.com>; julian_kift@hotmail.com <julian_kift@hotmail.com> Cc: detomaso@server.detomasolist.com <detomaso@server.detomasolist.com> Subject: Re: [DeTomaso] Re: Techno Question: AC system dryer insulation The insulation is for improved efficiency. Its purpose is to insulate the dryer from the engine bay heat. The colder the return temp to the compressor the colder the outlet temperature is at the vent. You can buy some Armaflex online, cut it to fit and glue it on or use zip ties. Your home AC return line is the one that needs to be kept insulated since it runs 24/7 in the summer. LOWES and HOME DEPOT have the material for the lines 3/4" and 1/2" in 6' lengths. Your dryer will need a much larger diameter and when you find it it will be sold in bulk and you will have enough left over to do all the cars still on the road. Or buy a 6' one and cut several pieces to fit. It will be ugly but effective. In a message dated 5/29/2025 12:18:54 PM Central Daylight Time, detomaso@server.detomasolist.com writes: Showing my considerable ignorance about A/C systems here, but why did all cars have insulated dryers before and why wouldn’t you treat your new dryer the same way? Mike Sent from my iPad they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it.
Julian
On May 29, 2025, at 09:15, Charles Engles <[2]cengles@cox.net>
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and
ready
for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [3]detomaso@server.detomasolist.com To unsubscribe send an email to [4]detomaso-leave@server.detomasolist.com
To manage your subscription (change email address, unsubscribe, etc.) use the links above.
Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the
_______________________________________________
Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [5]detomaso@server.detomasolist.com To unsubscribe send an email to [6]detomaso-leave@server.detomasolist.com
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wrote: list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [7]detomaso@server.detomasolist.com To unsubscribe send an email to [8]detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. mailto:julian_kift@hotmail.com 2. mailto:cengles@cox.net 3. mailto:detomaso@server.detomasolist.com 4. mailto:detomaso-leave@server.detomasolist.com 5. mailto:detomaso@server.detomasolist.com 6. mailto:detomaso-leave@server.detomasolist.com 7. mailto:detomaso@server.detomasolist.com 8. mailto:detomaso-leave@server.detomasolist.com
On May 29, 2025, at 10:07, Julian Kift <[1]julian_kift@hotmail.com <mailto:julian_kift@hotmail.com>> wrote:
Chuck,
The dryer should be replaced any time the A/C system is opened up,
Of course, the problem is cutting a 14mm thick flat panel bottom perfectly round and gluing it in to original looking standards. Larry On 5/30/25, 7:44 AM, "Julian Kift" <julian_kift@hotmail.com <mailto:julian_kift@hotmail.com>> wrote: Well apparently, you can just buy 1' lengths of this stuff sold as A/C accumulator foam..... Julian __________________________________________________________________ From: JOHN NEAL <jrnealjr@aol.com <mailto:jrnealjr@aol.com>> Sent: Friday, May 30, 2025 7:26 AM To: mikeldrew@aol.com <mailto:mikeldrew@aol.com> <mikeldrew@aol.com <mailto:mikeldrew@aol.com>>; julian_kift@hotmail.com <mailto:julian_kift@hotmail.com> <julian_kift@hotmail.com <mailto:julian_kift@hotmail.com>> Cc: detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> <detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com>> Subject: Re: [DeTomaso] Re: Techno Question: AC system dryer insulation The insulation is for improved efficiency. Its purpose is to insulate the dryer from the engine bay heat. The colder the return temp to the compressor the colder the outlet temperature is at the vent. You can buy some Armaflex online, cut it to fit and glue it on or use zip ties. Your home AC return line is the one that needs to be kept insulated since it runs 24/7 in the summer. LOWES and HOME DEPOT have the material for the lines 3/4" and 1/2" in 6' lengths. Your dryer will need a much larger diameter and when you find it it will be sold in bulk and you will have enough left over to do all the cars still on the road. Or buy a 6' one and cut several pieces to fit. It will be ugly but effective. In a message dated 5/29/2025 12:18:54 PM Central Daylight Time, detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> writes: Showing my considerable ignorance about A/C systems here, but why did all cars have insulated dryers before and why wouldn’t you treat your new dryer the same way? Mike Sent from my iPad they are relatively cheap I.e., less than $50. No you don’t need the insulation wrap, a replacement dryer would most likely not come with it.
Julian
On May 29, 2025, at 09:15, Charles Engles <[2]cengles@cox.net <mailto:cengles@cox.net>>
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and
ready
for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
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wrote: list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [7]detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> To unsubscribe send an email to [8]detomaso-leave@server.detomasolist.com <mailto:detomaso-leave@server.detomasolist.com> To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. mailto:julian_kift@hotmail.com <mailto:julian_kift@hotmail.com> 2. mailto:cengles@cox.net <mailto:cengles@cox.net> 3. mailto:detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> 4. mailto:detomaso-leave@server.detomasolist.com <mailto:detomaso-leave@server.detomasolist.com> 5. mailto:detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> 6. mailto:detomaso-leave@server.detomasolist.com <mailto:detomaso-leave@server.detomasolist.com> 7. mailto:detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> 8. mailto:detomaso-leave@server.detomasolist.com <mailto:detomaso-leave@server.detomasolist.com> _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> To unsubscribe send an email to detomaso-leave@server.detomasolist.com <mailto:detomaso-leave@server.detomasolist.com> To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.
mostly the foam is for condensation. Steven Edwards On Thursday, May 29, 2025 at 11:15:39 AM CDT, Charles Engles <cengles@cox.net> wrote: Dear Forum, This is a trivial question about the dryer in the Pantera AC system. Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced? Curious, Chuck Engles _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. mostly the foam is for condensation. Steven Edwards On Thursday, May 29, 2025 at 11:15:39 AM CDT, Charles Engles <cengles@cox.net> wrote: Dear Forum, This is a trivial question about the dryer in the Pantera AC system. Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced? Curious, Chuck Engles _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [1]detomaso@server.detomasolist.com To unsubscribe send an email to [2]detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. mailto:detomaso@server.detomasolist.com 2. mailto:detomaso-leave@server.detomasolist.com
Hi Chuck, The purest AC Service Tech's will recommend that you replace the Dryer if the system is opened up. If you are switching from R12 to R134a ... You will need to replace the Dryer. The difference between an R12 and R134a AC dryer lies in the desiccant used. Older R12 dryers had desiccants that are not compatible with R134a/oil, but if the dryer was manufactured after 1993, the desiccant should be compatible with both refrigerants. When converting an AC system from R12 to R134a, it is recommended to replace the dryer with a new one that has a desiccant compatible with R134a. For more details .. here is a good reference: https://www.perplexity.ai/search/r12-r134-ac-dryer-diference-5JelBMroRqeCiDY... As for the foam around it... I have no idea. Best regards, -dt Don Thomas On Thu, May 29, 2025 at 9:15 AM Charles Engles <cengles@cox.net> wrote:
Dear Forum,
This is a trivial question about the dryer in the Pantera AC system.
Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced?
Curious, Chuck Engles _______________________________________________
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Hi Chuck, The purest AC Service Tech's will recommend that you replace the Dryer if the system is opened up. If you are switching from R12 to R134a ... You will need to replace the Dryer. The difference between an R12 and R134a AC dryer lies in the desiccant used. Older R12 dryers had desiccants that are not compatible with R134a/oil, but if the dryer was manufactured after 1993, the desiccant should be compatible with both refrigerants. When converting an AC system from R12 to R134a, it is recommended to replace the dryer with a new one that has a desiccant compatible with R134a. For more details .. here is a good reference: [1]https://www.perplexity.ai/search/r12-r134-ac-dryer-difere nce-5JelBMroRqeCiDYC3RLc4Q As for the foam around it... I have no idea. Best regards, -dt Don Thomas On Thu, May 29, 2025 at 9:15 AM Charles Engles <[2]cengles@cox.net> wrote: Dear Forum, This is a trivial question about the dryer in the Pantera AC system. Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced? Curious, Chuck Engles _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [3]detomaso@server.detomasolist.com To unsubscribe send an email to [4]detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. https://www.perplexity.ai/search/r12-r134-ac-dryer-diference-5JelBMroRqeCiDY... 2. mailto:cengles@cox.net 3. mailto:detomaso@server.detomasolist.com 4. mailto:detomaso-leave@server.detomasolist.com
Back a few decades, I sawed a stock desiccant can apart for a look inside. The can was steel brazed together and half full of gray sludge. No trace of any desiccant beads or such- kind of nasty looking.Consistent with my life, I front mounted the A/C. The long stock R-12 A/C hoses fit fine once pulled forward. I replaced my OEM can with an attractive aluminum dryer can from a Freightliner semi. It was an inch shorter, a little wider and a bit lighter than stock- just right for mounting in that sharp angle in the right corner of the front trunk. No foam insulation. But the hydraulic fittings were not 37 degree AN- instead they were commercial 45 degree taper. So I made a 6061 adapter fitting to hook things together with the rest of my system- AN taper on one side and commercial taper on the other. Somewhere in the archives is a short article with photographs. On Thursday, May 29, 2025 at 10:02:53 PM PDT, Don Thomas <dtpantera@gmail.com> wrote: Hi Chuck, The purest AC Service Tech's will recommend that you replace the Dryer if the system is opened up. If you are switching from R12 to R134a ... You will need to replace the Dryer. The difference between an R12 and R134a AC dryer lies in the desiccant used. Older R12 dryers had desiccants that are not compatible with R134a/oil, but if the dryer was manufactured after 1993, the desiccant should be compatible with both refrigerants. When converting an AC system from R12 to R134a, it is recommended to replace the dryer with a new one that has a desiccant compatible with R134a. For more details .. here is a good reference: [1]https://www.perplexity.ai/search/r12-r134-ac-dryer-difere nce-5JelBMroRqeCiDYC3RLc4Q As for the foam around it... I have no idea. Best regards, -dt Don Thomas On Thu, May 29, 2025 at 9:15 AM Charles Engles <[2]cengles@cox.net> wrote: Dear Forum, This is a trivial question about the dryer in the Pantera AC system. Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced? Curious, Chuck Engles _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [3]detomaso@server.detomasolist.com To unsubscribe send an email to [4]detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. https://www.perplexity.ai/search/r12-r134-ac-dryer-diference-5JelBMroRqeCiDY... 2. mailto:cengles@cox.net 3. mailto:detomaso@server.detomasolist.com 4. mailto:detomaso-leave@server.detomasolist.com _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. Back a few decades, I sawed a stock desiccant can apart for a look inside. The can was steel brazed together and half full of gray sludge. No trace of any desiccant beads or such- kind of nasty looking. Consistent with my life, I front mounted the A/C. The long stock R-12 A/C hoses fit fine once pulled forward. I replaced my OEM can with an attractive aluminum dryer can from a Freightliner semi. It was an inch shorter, a little wider and a bit lighter than stock- just right for mounting in that sharp angle in the right corner of the front trunk. No foam insulation. But the hydraulic fittings were not 37 degree AN- instead they were commercial 45 degree taper. So I made a 6061 adapter fitting to hook things together with the rest of my system- AN taper on one side and commercial taper on the other. Somewhere in the archives is a short article with photographs. On Thursday, May 29, 2025 at 10:02:53 PM PDT, Don Thomas <dtpantera@gmail.com> wrote: Hi Chuck, The purest AC Service Tech's will recommend that you replace the Dryer if the system is opened up. If you are switching from R12 to R134a ... You will need to replace the Dryer. The difference between an R12 and R134a AC dryer lies in the desiccant used. Older R12 dryers had desiccants that are not compatible with R134a/oil, but if the dryer was manufactured after 1993, the desiccant should be compatible with both refrigerants. When converting an AC system from R12 to R134a, it is recommended to replace the dryer with a new one that has a desiccant compatible with R134a. For more details .. here is a good reference: [1]https://www.perplexity.ai/search/r12-r134-ac-dryer-difere nce-5JelBMroRqeCiDYC3RLc4Q As for the foam around it... I have no idea. Best regards, -dt Don Thomas On Thu, May 29, 2025 at 9:15 AM Charles Engles <[2]cengles@cox.net> wrote: Dear Forum, This is a trivial question about the dryer in the Pantera AC system. Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced? Curious, Chuck Engles _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [3]detomaso@server.detomasolist.com To unsubscribe send an email to [4]detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. [1]https://www.perplexity.ai/search/r12-r134-ac-dryer-diference-5JelBMr oRqeCiDYC3RLc4Q 2. mailto:cengles@cox.net 3. mailto:detomaso@server.detomasolist.com 4. mailto:detomaso-leave@server.detomasolist.com _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [2]detomaso@server.detomasolist.com To unsubscribe send an email to [3]detomaso-leave@server.detomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. https://www.perplexity.ai/search/r12-r134-ac-dryer-diference-5JelBMroRqeCiDY... 2. mailto:detomaso@server.detomasolist.com 3. mailto:detomaso-leave@server.detomasolist.com
The big problem is that all the residual oil remains in the Drier. R-12 mineral oil is NOT compatible with PAG oil that comes in most Rotary AC Compressors Even with changing the drier, The residual mineral oil found at the bottom of the Evaporator will form little clear gel balls and clog the Evaporator valve filter in about 3 weeks running the contaminated system. We need to use Ester 100 oil in our Pantera's with R134 flare fitting rotary compressors to be compatible. Larry Stock On 5/29/25, 10:01 PM, "Don Thomas" <dtpantera@gmail.com <mailto:dtpantera@gmail.com>> wrote: Hi Chuck, The purest AC Service Tech's will recommend that you replace the Dryer if the system is opened up. If you are switching from R12 to R134a ... You will need to replace the Dryer. The difference between an R12 and R134a AC dryer lies in the desiccant used. Older R12 dryers had desiccants that are not compatible with R134a/oil, but if the dryer was manufactured after 1993, the desiccant should be compatible with both refrigerants. When converting an AC system from R12 to R134a, it is recommended to replace the dryer with a new one that has a desiccant compatible with R134a. For more details .. here is a good reference: [1]https://www.perplexity.ai/search/r12-r134-ac-dryer-difere <https://www.perplexity.ai/search/r12-r134-ac-dryer-difere> nce-5JelBMroRqeCiDYC3RLc4Q As for the foam around it... I have no idea. Best regards, -dt Don Thomas On Thu, May 29, 2025 at 9:15 AM Charles Engles <[2]cengles@cox.net <mailto:cengles@cox.net>> wrote: Dear Forum, This is a trivial question about the dryer in the Pantera AC system. Is the stock factory foam insulation over the dryer necessary if converting to R134? Mine is fifty years old and ready for retirement. Must it be replaced? Curious, Chuck Engles _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- [3]detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> To unsubscribe send an email to [4]detomaso-leave@server.detomasolist.com <mailto:detomaso-leave@server.detomasolist.com> To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. References 1. https://www.perplexity.ai/search/r12-r134-ac-dryer-diference-5JelBMroRqeCiDY... <https://www.perplexity.ai/search/r12-r134-ac-dryer-diference-5JelBMroRqeCiDYC3RLc4Q> 2. mailto:cengles@cox.net <mailto:cengles@cox.net> 3. mailto:detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> 4. mailto:detomaso-leave@server.detomasolist.com <mailto:detomaso-leave@server.detomasolist.com> _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com <mailto:detomaso@server.detomasolist.com> To unsubscribe send an email to detomaso-leave@server.detomasolist.com <mailto:detomaso-leave@server.detomasolist.com> To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.
participants (8)
-
Charles Engles -
Don Thomas -
jderyke＠aol.com -
JOHN NEAL -
Julian Kift -
Larry Stock -
Mike Drew -
STEVEN EDWARDS