E30 AC Drier Pressure Hose R134A version

[kenrk]

Just updated my 89 E30 AC to R134 and I tried to use the original R22 hoses but after closing the hood it destroyed the high pressure coupler. BMW now offers a new hose same part number as the old (64-53-8-391-040 ) but for R134A and it went in without issues and eliminates the hood closing issues of the original hose. Attached are pictures of the old and new.

Old hose

[efficient]

Putting ac in my car looks very tempting

[kenrk]

It was not that hard Amazon Sanden compressor, new mount, new dryer, evaporator, and modify a coupe of hoses (about $500 for all). Did all myself and was the first time I ever worked on an AC system.

[eLKuRLy]

Do you have the part number for the Sanden compressor? would this be for early or late model e30's? I am not sure if the mounting points are the same.
Thanks!

[kenrk]

Here the parts I used to replace the old Denso 10P15E compressor in my 1989 Convertible
1. The compressor Sanden SD5H14 from amazon $177. Also need Sanden Rear compressor head to move the fittings away from oil cooler lines $30.

https://coldhose.com/collections/sanden-compressor-heads/products/sanden-fl-rear-compressor-head?variant=35532188647584

2. You need to replace the mount bracket (only the adjusting arm) with a custom mount bracket that attaches to the existing engine mount part # 64521717007.
https://lcwylieco.bigcartel.com/prod...ersion-bracket
3. The Sanden hose low pressure hose can be modified to connect to the Sanden.
4. Purchase and new High pressure Dryer hose 64531381740 that has the R134 adapter offset from hood.

[ghrays]

Here the parts I used to replace the old Denso 10P15E compressor in my 1989 Convertible
1. The compressor Sanden SD5H14 from amazon $177. Also need Sanden Rear compressor head to move the fittings away from oil cooler lines $30.
https://coldhose.com/collections/san...35532188647584

2. You need to replace the mount bracket (only the adjusting arm) with a custom mount bracket that attaches to the existing engine mount part # 64521717007.
https://lcwylieco.bigcartel.com/prod...ersion-bracket
3. The Sanden hose low pressure hose can be modified to connect to the Sanden.
4. Purchase and new High pressure Dryer hose 64531381740 that has the R134 adapter offset from hood.

I have a couple of comments/questions about your three pictures. I just did the same install (replaced Nipodenso 10P15E with a new Sanden SD5H14 compressor, with the LC Wylieco adapter bracket), except my car is a 1990 325i coupe.

First, the rigid line between the dryer and the hose that connects through the firewall to the evaporator for R12 is part # 64531381740, and looks the same as your second picture. Using this line for R134a requires an adapter for the high pressure service port. However, the schrader valve remains from the R12 connection and although the adapter does interfere with closing the hood, the adapter is only needed when attaching a manifold gauge set to measure pressures in the high pressure line and can otherwise be removed.

The evaporator/dryer line part you mentioned and show in your first picture 64538391040, has a R134a service port but fits only convertible models. The service port interferes with the windshield washer fluid reservoir for non-convertible models. Your first picture shows this, but curiously the reservoir has been removed.

Finally, I had a lot of issues installing the suction and discharge hose fittings to the new Sanden compressor, mainly because the fittings are exactly in the way of the oil cooler hoses as they extend from the oil filter head.Your third and final picture shows the oil cooler lines well away, towards the rear of the car, from the fittings on the compressor. I don't know how you got those oil cooler hoses to move away like that. Also, you mentioned purchasing an adapter for the compressor head to "move the fittings away from the oil cooler lines". I don't see how this is accomplished. The fittings are already on the rear of the compressor as it comes from the factory, and how this head adapter would provide more clearance to the oil cooler hoses I don't understand.

[ghrays]

64538391040 (R134a):



64531381740

[cory58]

The evaporator/dryer line part you mentioned and show in your first picture 64538391040, has a R134a service port but fits only convertible models. The service port interferes with the windshield washer fluid reservoir for non-convertible models. Your first picture shows this, but curiously the reservoir has been removed.

RealOEM lists part 64538391040 for convertibles but I used it with no problem on my touring. I think there are two versions because the coupe/sedan/touring part won't fit on a convertible.

Cory

[ghrays]

RealOEM lists part 64538391040 for convertibles but I used it with no problem on my touring. I think there are two versions because the coupe/sedan/touring part won't fit on a convertible.

Cory

Could you please post a picture of your installation of 64538391040 in your touring? It will be interesting to see the relationship between the R134a high pressure service port and the windshield washer fluid reservoir, as well as the difference between coupes and touring models in the “bridge” between the right fender and the right shock tower present in convertible models but absent in coupes and sedans.

[cory58]

Could you please post a picture of your installation of 64538391040 in your touring? It will be interesting to see the relationship between the R134a high pressure service port and the windshield washer fluid reservoir, as well as the difference between coupes and touring models in the “bridge” between the right fender and the right shock tower present in convertible models but absent in coupes and sedans.

Will do. My garage is offsite, so give me a few days.

[cory58]

Photos of 64538391010 in 11/88 touring.

new AC lines 2021 1 by cory58f5, on Flickr

new AC lines 2021 2 by cory58f5, on Flickr

new AC lines 2021 3 by cory58f5, on Flickr