The Detailed E30 R-134a Conversion Thread/DIY

[Chilezen]

I bought a (NEW) Sanden compressor https://www.acparts.com/product/new-...mpressor-6627/ Model SD5H14 and used LC Wylie's adapter bracket https://lcwylieco.bigcartel.com/prod...ersion-bracket.

I am really surprised and thrilled that an aftermarket solution like this exists!
Does the compressor come with oil?

On behalf of others now and in the future, thanks for biting the bullet and taking the time to do this right and sharing the information.

[ForcedFirebird]

Anyone have updates if part number 64538391040 will work for 318is? This replaces 64531381740 respectively. I know in can just get the r134a adapter but since the lines are all old, im planning on doing a full overhaul. Thanks

The m42 had unique lines to go around the coil packs. They are different in the strut tower area. Also have to pay attention to the hose ends, e30's came with a coupld different compressors.

You can actually purchase the hose and furreles, get them fitted yourself, then have a hydraulic hose shop crimp them. This way you will also have the benefit of barrier hoses. r134a can actually seep though the r12 hoses.

[bigglazz]

I am aware this is a Old Post if anyone's out there that can help me how do I go from a 2 pressure switch system to 1 if someone has photos or a can explain to me it would be helpful thank you

[Chilezen]

I am aware this is a Old Post if anyone's out there that can help me how do I go from a 2 pressure switch system to 1 if someone has photos or a can explain to me it would be helpful thank you

Yes. You need this switch https://www.fcpeuro.com/products/bmw...ns-64538390971

which should be installed on this drier https://www.fcpeuro.com/products/bmw...hr-64538391025

and this cap replaces the filling valve by the hood strut https://www.fcpeuro.com/products/bmw...te-64118363260

Just cut the wires off the old sensor and cut the plug off the new sensor.. and splice the new sensor to the old plug. Some people buy the other half of the new plug and splice that in but.. it's basically the same thing in the end. Also, connect the ends of the other sensor that is no longer in use. Search around the forum for the full instructions. I am pretty sure it's described in this thread too. Start reading. Good luck.

[cory58]

I am aware this is a Old Post if anyone's out there that can help me how do I go from a 2 pressure switch system to 1 if someone has photos or a can explain to me it would be helpful thank you

Why do you need to make the change? The two switch set up works fine too.