Welcome Guest! To enable all features please login.

Notification

Icon
Error

2 Pages<12
Paul W
#21 Posted : 15 September 2018 10:59:46(UTC)
Paul W

Rank: Advanced poster

Groups: OCMember, Registered
Joined: 02/04/2016(UTC)
Posts: 859
Man
Location: North Notts

Thanks: 8 times
Was thanked: 152 time(s) in 141 post(s)
If you really wanted to replace an obsolete aircon unit, maybe this might be adaptable for an MX-5:

https://www.carbuilderso...act-air-conditioning-kit
Mk2 1.8i, built Jan 1998.
Bettabuilda
#22 Posted : 15 September 2018 11:51:07(UTC)
Bettabuilda

Rank: Advanced poster

Groups: OCMember, Registered
Joined: 06/03/2015(UTC)
Posts: 1,061
Location: Morley

Thanks: 437 times
Was thanked: 233 time(s) in 198 post(s)

"But interesting Barrie as mine had five bolts, four M10's through the side, and a long M8 through a rubber bush in the front."

It wouldn't surprise me in the least that there are 5 bolts  the old grey cells are slipping away quite rapidly these days! It was a few years ago when I did the job  Not sure where they escape to though  Have you got the non aircon connecting tube for linking up the cabin air flow? I also looped the A/C switch connector together so it could be used to operate the fan seperately if needed. AC = Additional Cooling 

Barrie

COG group member

2007 NC1 1800GT 1st place lightly modified 2018 Spring Rally Goodwood

'91 Eunos, classic red, 2nd place in modified mk1 at 2015 Spring Rally Oulton Park.
saz9961
#23 Posted : 15 September 2018 13:34:15(UTC)
saz9961

Rank: Advanced poster

Groups: ForumModerator, OCMember, Registered
Joined: 24/07/2008(UTC)
Posts: 9,480

Thanks: 10 times
Was thanked: 561 time(s) in 507 post(s)

Originally Posted by: Paul W Go to Quoted Post
If you really wanted to replace an obsolete aircon unit, maybe this might be adaptable for an MX-5:

https://www.carbuildersolutions.com/uk/compact-air-conditioning-kit

 

One of the features on the Roadster aircon system is the clutch on the compressor. At WOT, the system declutches, so there are no parasitic power losses. My CRX in Alabama didn't have this, and, boy, could you feel it when the aircon was on (sapped a lot of power, and fuel consumption went up). So a universal system I'd expect to be crippling to performance of a little 1.6.

 

I suppose it might be feasible to retrofit a system out of a later car (NB-FL) to an early NA.

drturbo
#24 Posted : 15 September 2018 17:24:42(UTC)
drturbo

Rank: Regular poster

Groups: OCMember, Registered
Joined: 21/11/2017(UTC)
Posts: 82
Location: Somewhere in Suffolk getting grumpy about stone chippings everywhere

Thanks: 1 times
Was thanked: 6 time(s) in 6 post(s)

Originally Posted by: Bettabuilda Go to Quoted Post

"But interesting Barrie as mine had five bolts, four M10's through the side, and a long M8 through a rubber bush in the front."

It wouldn't surprise me in the least that there are 5 bolts  the old grey cells are slipping away quite rapidly these days! It was a few years ago when I did the job  Not sure where they escape to though  Have you got the non aircon connecting tube for linking up the cabin air flow? I also looped the A/C switch connector together so it could be used to operate the fan seperately if needed. AC = Additional Cooling 

Barrie

 

The evaporator is just the only part I have to remove, when I've got the pipe I'll remove it.

I'll strip and repaint the AC fan and if it looks ok I'll put it back and use the AC switch for the fan, good idea that, as its got a pressed steel frame it looks a bit tatty at 27 years old, but it should come up ok... I do like the look of a rad with twin fans..

 

Anyway, off to cut down and refit the AC bolts, before I forget!!

Mark

Doctorates in several areas, car related, electrical, guitar amps, lawn mowers, tractors..... oh, and turbo's. Just not Windows 10!

1991 NA Eunos 1.6, Classic red
1996 NA 1.8iS, Brilliant Black
2016 Mazda 3 2.0 Sport Black, Soul Red
2011 Suzuki Alto SZ4, Silky Silver
 1 user thanked drturbo for this useful post.
Bettabuilda on 15/09/2018(UTC)
missfire
#25 Posted : 15 September 2018 17:57:42(UTC)
missfire

Rank: Advanced poster

Groups: Registered
Joined: 09/08/2015(UTC)
Posts: 264

Was thanked: 52 time(s) in 50 post(s)
You don't really need a new connecting tube.Remove evap housing complete ,then remove the ali evap from the plastic and refit without the a/c part. You will need to blank off the pipe entry section .Use tank/gaffer tape or find a suitable grommet.
Paul W
#26 Posted : 15 September 2018 21:34:16(UTC)
Paul W

Rank: Advanced poster

Groups: OCMember, Registered
Joined: 02/04/2016(UTC)
Posts: 859
Man
Location: North Notts

Thanks: 8 times
Was thanked: 152 time(s) in 141 post(s)

Originally Posted by: saz9961 Go to Quoted Post

Originally Posted by: Paul W Go to Quoted Post
If you really wanted to replace an obsolete aircon unit, maybe this might be adaptable for an MX-5:

https://www.carbuildersolutions.com/uk/compact-air-conditioning-kit

 

One of the features on the Roadster aircon system is the clutch on the compressor. At WOT, the system declutches, so there are no parasitic power losses. My CRX in Alabama didn't have this, and, boy, could you feel it when the aircon was on (sapped a lot of power, and fuel consumption went up). So a universal system I'd expect to be crippling to performance of a little 1.6.

 

I suppose it might be feasible to retrofit a system out of a later car (NB-FL) to an early NA.

The aircon unit uses the existing compressor and drive so there is new reason why it would use any more power than the original Aircon.

 

 

Mk2 1.8i, built Jan 1998.
saz9961
#27 Posted : 16 September 2018 07:26:28(UTC)
saz9961

Rank: Advanced poster

Groups: ForumModerator, OCMember, Registered
Joined: 24/07/2008(UTC)
Posts: 9,480

Thanks: 10 times
Was thanked: 561 time(s) in 507 post(s)

 

There is greater demand for aircon in the US and rockauto.com carry a lot of  Miata-specific pattern, remanufactured parts and rebuilt kits. A Four Seasons rebuilt compressor for a 1990 car is £230 plus shipping. Condensors are about £50. Evaporator cores are £25-30. Driers are less than £10. The only part they are struggling to get are replacement compressor clutches.

Conversion kit, £6

https://www.rockauto.com/en/moreinfo.php?pk=1251685&cc=1190876&jsn=418

Chinese made, so likely not a long life.

Edited by user 16 September 2018 12:24:17(UTC)  | Reason: Not specified

 1 user thanked saz9961 for this useful post.
Martin Young on 18/09/2018(UTC)
Martin Young
#28 Posted : 18 September 2018 10:03:40(UTC)
Martin Young

Rank: Advanced poster

Groups: OCMember, Registered
Joined: 24/10/2008(UTC)
Posts: 951

Thanks: 11 times
Was thanked: 42 time(s) in 38 post(s)

Thanks for the Rockauto link.  I had intended to repurpose my old AC condenser as a chargecooler radiator but it was so corroded I didn't trust it and bodged a bracket to fit a generic one instead.  If I'd known you could buy new ones I'd have given that a try.

'94 Roadster + MP62
rhino666
#29 Posted : 18 September 2018 10:48:32(UTC)
rhino666

Rank: Advanced poster

Groups: OCMember, Registered
Joined: 11/12/2010(UTC)
Posts: 2,743
Man
Location: South Devon

Thanks: 31 times
Was thanked: 596 time(s) in 570 post(s)

Originally Posted by: saz9961 Go to Quoted Post

 

There is greater demand for aircon in the US and rockauto.com carry a lot of  Miata-specific pattern, remanufactured parts and rebuilt kits. A Four Seasons rebuilt compressor for a 1990 car is £230 plus shipping. Condensors are about £50. Evaporator cores are £25-30. Driers are less than £10. The only part they are struggling to get are replacement compressor clutches.

Conversion kit, £6

https://www.rockauto.com/en/moreinfo.php?pk=1251685&cc=1190876&jsn=418

Chinese made, so likely not a long life.

The problem here(backed up by ebay listings) is that the Miata appears to have been fitted with the 1.8 style of aircon with R134A refrigerant. Very useful if you have a MK1/Eunos 1.8(1993 - 8) that requires aircon spares, particularly the condenser which appears to be impossible to source in the UK.

Ebay US also list the clutch kit but from my experience they rarely fail on the 1.8 style of compressor which appears to be more robust than the UK 1.6 version.

This looks to be a worthwhile 1.8 condenser purchase......................

EBAY US 1.8 condenser

Be interested to hear if anyone has successfully installed a US purchased condenser and what, if any fitting issues arose.    

Unfortunately no use for the original poster or any MK1/Eunos 1.6 car owner with the totally different R12 system.        

 

Edited by user 18 September 2018 11:09:04(UTC)  | Reason: Not specified

1997 black 1.6i MK1 - 4/12/2002
1991 red 1.6i Eunos - 21/9/2008

saz9961
#30 Posted : 18 September 2018 12:19:16(UTC)
saz9961

Rank: Advanced poster

Groups: ForumModerator, OCMember, Registered
Joined: 24/07/2008(UTC)
Posts: 9,480

Thanks: 10 times
Was thanked: 561 time(s) in 507 post(s)

Originally Posted by: rhino666 Go to Quoted Post

Originally Posted by: saz9961 Go to Quoted Post

 

There is greater demand for aircon in the US and rockauto.com carry a lot of  Miata-specific pattern, remanufactured parts and rebuilt kits. A Four Seasons rebuilt compressor for a 1990 car is £230 plus shipping. Condensors are about £50. Evaporator cores are £25-30. Driers are less than £10. The only part they are struggling to get are replacement compressor clutches.

Conversion kit, £6

https://www.rockauto.com/en/moreinfo.php?pk=1251685&cc=1190876&jsn=418

Chinese made, so likely not a long life.

The problem here(backed up by ebay listings) is that the Miata appears to have been fitted with the 1.8 style of aircon with R134A refrigerant. Very useful if you have a MK1/Eunos 1.8(1993 - 8) that requires aircon spares, particularly the condenser which appears to be impossible to source in the UK.

Ebay US also list the clutch kit but from my experience they rarely fail on the 1.8 style of compressor which appears to be more robust than the UK 1.6 version.

This looks to be a worthwhile 1.8 condenser purchase......................

EBAY US 1.8 condenser

Be interested to hear if anyone has successfully installed a US purchased condenser and what, if any fitting issues arose.    

Unfortunately no use for the original poster or any MK1/Eunos 1.6 car owner with the totally different R12 system.        

 

 

All 90-93 Miatas were offered with R12. Why the hell do you think one of the most popular questions posted on miataforum is how to convert R12 to R134a, and whether the Walmart kits are any good?

for example;

https://forum.miata.net/vb/showthread.php?t=333677

 

US part number, page 84 onwards or thereabouts:

https://www.miata.net/garage/90-99Parts/90/MX5%2090%202%20OF%203%20BODY.pdf

 

JDM part numbers, early cars:

http://do-da.co.jp/sun-mec/na61/na61_6130.html

http://do-da.co.jp/sun-mec/na61/na61_6140.html

http://do-da.co.jp/sun-mec/na61/na61_6150.html

I haven't been through all the part numbers; you have more time than me, but I don't see any significant difference in part numbers. The only Miata parts that are likely different will be some pipes.

 

R134a didn't start to appear in new cars until 1992. R12 was phased out in 1995

 

While aircon might have been offered in the UK as a factory option, in 20 years, I have never come across a UK Mk1 fitted with aircon, so somewhat intrigued by your experience of UK cars having unique air conditioning parts.

rhino666
#31 Posted : 18 September 2018 12:49:51(UTC)
rhino666

Rank: Advanced poster

Groups: OCMember, Registered
Joined: 11/12/2010(UTC)
Posts: 2,743
Man
Location: South Devon

Thanks: 31 times
Was thanked: 596 time(s) in 570 post(s)

Originally Posted by: saz9961 Go to Quoted Post

Originally Posted by: rhino666 Go to Quoted Post

Originally Posted by: saz9961 Go to Quoted Post

 

There is greater demand for aircon in the US and rockauto.com carry a lot of  Miata-specific pattern, remanufactured parts and rebuilt kits. A Four Seasons rebuilt compressor for a 1990 car is £230 plus shipping. Condensors are about £50. Evaporator cores are £25-30. Driers are less than £10. The only part they are struggling to get are replacement compressor clutches.

Conversion kit, £6

https://www.rockauto.com/en/moreinfo.php?pk=1251685&cc=1190876&jsn=418

Chinese made, so likely not a long life.

The problem here(backed up by ebay listings) is that the Miata appears to have been fitted with the 1.8 style of aircon with R134A refrigerant. Very useful if you have a MK1/Eunos 1.8(1993 - 8) that requires aircon spares, particularly the condenser which appears to be impossible to source in the UK.

Ebay US also list the clutch kit but from my experience they rarely fail on the 1.8 style of compressor which appears to be more robust than the UK 1.6 version.

This looks to be a worthwhile 1.8 condenser purchase......................

EBAY US 1.8 condenser

Be interested to hear if anyone has successfully installed a US purchased condenser and what, if any fitting issues arose.    

Unfortunately no use for the original poster or any MK1/Eunos 1.6 car owner with the totally different R12 system.        

 

 

All 90-93 Miatas were offered with R12. Why the hell do you think one of the most popular questions posted on miataforum is how to convert R12 to R134a, and whether the Walmart kits are any good?

for example;

https://forum.miata.net/vb/showthread.php?t=333677

 

US part number, page 84 onwards or thereabouts:

https://www.miata.net/garage/90-99Parts/90/MX5%2090%202%20OF%203%20BODY.pdf

 

JDM part numbers, early cars:

http://do-da.co.jp/sun-mec/na61/na61_6130.html

http://do-da.co.jp/sun-mec/na61/na61_6140.html

http://do-da.co.jp/sun-mec/na61/na61_6150.html

I haven't been through all the part numbers; you have more time than me, but I don't see any significant difference in part numbers. The only Miata parts that are likely different will be some pipes.

 

R134a didn't start to appear in new cars until 1992. R12 was phased out in 1995

 

While aircon might have been offered in the UK as a factory option, in 20 years, I have never come across a UK Mk1 fitted with aircon, so somewhat intrigued by your experience of UK cars having unique air conditioning parts.

 

Oh dear!

Simply find me evidence that there was a Miata fitted with the same condenser and compressor as our 1.6 MK1 / Eunos if it is that important to you. I have looked at the spares available and there appears to be none, new or secondhand.

Certainly your link to Rock Auto was for 1.8 spares which are utterly useless for the system required on a 1991 Eunos.

This is about passing on useful information and it would help if you did not take the logic of my post personally. 

I appear to have more time than you..............really!!

 

 

 

Edited by user 18 September 2018 12:51:18(UTC)  | Reason: Not specified

1997 black 1.6i MK1 - 4/12/2002
1991 red 1.6i Eunos - 21/9/2008

Jerakeen
#32 Posted : 18 September 2018 12:59:03(UTC)
Jerakeen

Rank: Advanced poster

Groups: OCMember, Registered
Joined: 18/11/2008(UTC)
Posts: 265

Thanks: 1 times
Was it just the early 1.6 cars that had R12? I've just bought a very early 1.8 (1993) and the air con isn't working. I assume because it needs gas. It's a pre facelift one with the same straight indicator and wiper stalks as my 1989 1.6. Would that be R134a or R12?
1990 Red NA 1.6
rhino666
#33 Posted : 18 September 2018 13:30:06(UTC)
rhino666

Rank: Advanced poster

Groups: OCMember, Registered
Joined: 11/12/2010(UTC)
Posts: 2,743
Man
Location: South Devon

Thanks: 31 times
Was thanked: 596 time(s) in 570 post(s)

Originally Posted by: Betty_Swallocks Go to Quoted Post
Was it just the early 1.6 cars that had R12? I've just bought a very early 1.8 (1993) and the air con isn't working. I assume because it needs gas. It's a pre facelift one with the same straight indicator and wiper stalks as my 1989 1.6. Would that be R134a or R12?

All of the MK1 style Eunos 1.6 cars had the R12 system, 1989 - 1998. 

All of the MK1 style Eunos 1.8 cars had the R134a system, 1993 - 1998.

If any of these systems are recharged, the refrigerant used will be a drop in replacement for the original R12 and R134a refrigerants.     

 

1997 black 1.6i MK1 - 4/12/2002
1991 red 1.6i Eunos - 21/9/2008

Users browsing this topic
Guest
2 Pages<12
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF 1.9.6.1 | YAF © 2003-2018, Yet Another Forum.NET
This page was generated in 1.078 seconds.