A/C R12 to R134a using Sanden Compressor with stock M20 oil cooler lines

[Aleman]

Have a look at my post in here for some inspriration,

https://www.r3vlimited.com/board/for...3#post10022275

And it looks like this guy sells something that might interest you.

https://www.bimmerforums.com/forum/s...ckets-for-sale

https://lcwylieco.bigcartel.com/

Wow great info here! I didn't know there was an adapter bracket available, so that's good news for my A/C project. Thanks for sharing!

[cory58]

Thumbs-up from me for the Sanden SD5H14 compressor (S6626) and LC Wylie bracket combo.
Appears your TX valve is 134a compatible - sweet!

Thanks for the LC Wylie feedback. Thinking about getting one for when my cabrio's Seiko compressor gives up. The LC Wylie M30 brackets were out of stock for a while and I don't want that to happen with the M20 brackets when I need one.

Cory

[Tzantushka]

Thumbs-up from me for the Sanden SD5H14 compressor (S6626) and LC Wylie bracket combo.
Appears your TX valve is 134a compatible - sweet!

[e30davie]

Have a look at my post in here for some inspriration,

https://www.r3vlimited.com/board/for...3#post10022275

And it looks like this guy sells something that might interest you.

https://www.bimmerforums.com/forum/s...ckets-for-sale

https://lcwylieco.bigcartel.com/

[Aleman]

Old thread. I know. Has anyone been able to find a new r134 compressor & M20 bracket combo that works and is still available to buy?

Re: 92 & 93 vert AC compressors as r134 - For what it's worth, I snapped a pic of the compressor in my '93 before I sold it, and the part number was 64528391152

[Storm2525]

Help

I really am in need of your help. Do you know where I can find a used bracket for a BMW M21 to Sandin 508 seen/ used on this thread? I need the exact bracket that you have on this thread.

[jeffnhiscars]

ECS lists them as r134a but they are still r12 compressors. I believe r12 and r134 is actually different by the design, not just seals

this is 100% accurate. An r12 compressor with 134 compatible seals is still an r12 compressor. Without the updated r134 seals it will soon be no compressor. The expansion valve must also match the refrigerant for a fighting chance at good performance.

[changyeamoon]

My sanden compressor has a one electrical connection nipple. It looks like it can fit into the 3 pronged inlet where the old compressor plugged into, but that would leave 2 prongs exposed. Am I supposed to reuse the connector from my old compressor?

Sorry if I dont make any sense.

[zaq123]

Right. I meant a direct replacement that is R134a compatible and has the right seals, if such a thing even exist, or even a working R12 OE rep that I can change seals/oil etc.

The one I have is bad so I dont even have the option to try and convert.

ECS Tuning has two options they claim to fit the M20:

https://www.ecstuning.com/b-omega-parts/a-c-compressor-r134a/64528385712kt~om/

https://www.ecstuning.com/b-genuine-...64528385712kt/

ECS lists them as r134a but they are still r12 compressors. I believe r12 and r134 is actually different by the design, not just seals

[jeffnhiscars]

were the compressors in the very late verts (1992-93) true 134 compressors or were they the same as the others but with 134 compatible seals?

The latter I believe. The conversion service bulletin, which I have somewhere, lists the year, models and compressor PNs which are "r134 compatible". Some latter cars also had barrier hoses which is a big plus

[chip]

I see most OE replacement options list compatible vert models with production date up to 03/1992 with part# 64 52 8 363 550.

Part# post march 1992 changed to 64 52 8 391 152 which is listed here as R134a but Im not sure how accurate this is.

Good thing is the supporting bracket looks to be the same, part# 64 52 1 717 007 so this could be a direct fit. ECS Tuning has it for $637 here. The more time I spend trying to find a solution the more attractive the price looks ;)

Found a 93 vert at a pick and pull, but the compressor was a Seiko R12. Now I'm thinking that the 12r compressor are just 134 compatible and not really a true 134 compressor. I think I'll just rebuild what I have.

[bellerto]

I see most OE replacement options list compatible vert models with production date up to 03/1992 with part# 64 52 8 363 550.

Part# post march 1992 changed to 64 52 8 391 152 which is listed here as R134a but Im not sure how accurate this is.

Good thing is the supporting bracket looks to be the same, part# 64 52 1 717 007 so this could be a direct fit. ECS Tuning has it for $637 here. The more time I spend trying to find a solution the more attractive the price looks ;)

[chip]

were the compressors in the very late verts (1992-93) true 134 compressors or were they the same as the others but with 134 compatible seals?

[bellerto]

Right. I meant a direct replacement that is R134a compatible and has the right seals, if such a thing even exist, or even a working R12 OE rep that I can change seals/oil etc.

The one I have is bad so I dont even have the option to try and convert.

ECS Tuning has two options they claim to fit the M20:

https://www.ecstuning.com/b-omega-parts/a-c-compressor-r134a/64528385712kt~om/

https://www.ecstuning.com/b-genuine-bmw-parts/remanufactured-a-c-compressor-r134a/64528385712kt/

[jeffnhiscars]

any 134 replacement compressor will need a bracket designed for it. I bought one of the last APG kits from Amazon and it was specific to a Seltec. The upgrade I did on an M10 was for a Sanden 508.

I will look in to making these when I come up for air, assuming there is enough interest