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daywilmOffline
Post subject: A/C Compressor and Fittings on BMW V12  PostPosted: Mar 27, 2016 - 12:29 AM
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For those builders using a replica frame and the BMW V12, what did you use for the A/C compressor and hose fittings? I'm trying to use the stock BMW compressor but one of the hoses (the larger of the two) has such a large bend in it that it doesn't come close to fitting in the small space between the compressor and the wall of the engine compartment. Is there something else that will fit and has a tighter bend or does it require a custom-made hose?
Thanks,
Mike
 
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AdrianBurtonOffline
Post subject: RE: A/C Compressor and Fittings on BMW V12  PostPosted: Mar 27, 2016 - 05:19 AM
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i think custom will be the only way

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RTOffline
Post subject: RE: A/C Compressor and Fittings on BMW V12  PostPosted: Mar 27, 2016 - 01:11 PM
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If you are going to have custom hoses made, look for a local shop that advertises hydraulic hoses for commercial equipment. They have all the correct hoses and fittings for any kind of lines including AC. I had custom hoses made and they are perfect. The only thing you have to do for them with the AC line is make sure the fittings are oriented properly at each end of the hose and the lengths of the hoses are exactly what you need. Because once they are made you will have an impossible time trying to rotate the hose and fitting to match the port you are trying to connect to. AC hoses are very stiff and won't flex or twist to make things easy.
I got the hoses and fittings from them and ran my lines to get the lengths and placed the fittings on the ends and put tape on the hose and fittings with match marks for their orientation. Then I took them back to the hose shop and they used their equipment to secure the fittings . The hoses look very professional and need to be done right because of the high pressure they hold.
These guys can make any other custom hoses you need too such as power steering which have to run from the rear to the front on these cars.
Sounds like you have a nice build going. Good luck.

RT

I just re-read your post and it sounds like you need a 90* fitting at the compressor. The hydraulic shops have anything you need including 90* fittings. Check them out. From what I remember the cost was not extreme.

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daywilmOffline
Post subject:   PostPosted: Mar 27, 2016 - 04:54 PM
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Thanks RT. I do know of a commercial hose place here in town and have already used them to make my power steering hoses. I'll check with them to see if they have the proper fittings for my A/C. I kind of doubt they'll have the fittings for a BMW (they are different than U.S.) but I do have the BMW fittings I took off the 750 and they can probably use them if they can get the ends off and re-solder them to a tube with a tighter bend. I'll just have to check to see what their capabilities are. Push comes to shove I may convert over to a Sanden compressor and fabricate some mounts. Sanden compressors are smaller and would probably give me the room I need for the hoses.

Have you finished your build yet? Yours is always so interesting. You've got things on your build that nobody else has and it is always a treat to see what you've done next!
 
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RTOffline
Post subject:   PostPosted: Mar 27, 2016 - 06:19 PM
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daywilm...
Even if you have to switch the compressor, that might make a lot of things easier for you. Doing a compressor swap should be pretty straight forward. Surely not the hardest thing about these builds.
I got some of my "MOJO" back. I am almost ready for primer and paint! This week it goes in for primer. I want to have as much as possible done for Carlisle. It won't be completely finished but will look pretty good.
Before this year is over I will have it finished. Then I will post videos so everyone can see how it turned out. (At least that is the plan. And we all known how plans go.)
Keep plugging on your build. We need a lot more finished cars.

RT

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AdrianBurtonOffline
Post subject:   PostPosted: Mar 29, 2016 - 04:32 PM
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You can even bring it unfinished, I am

IJS

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jdinnerOffline
Post subject:   PostPosted: Mar 31, 2016 - 10:40 AM
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I took my ports that fit the BMW compressor to my hydraulic shop and had them silver solder on 90* hydraulic fittings. If I recall it was #10 for the suction and #6 for pressure.
Had them made a hose that runs to a spot under the tunnel for inline connection ports.


I didn't use any sealer on hydraulic fittings and it still works perfect after 4 years of service.
I'm using the BMW compressor, Gen2 mini Vintage Air dash unit and replica controller with two Porsche 911 condensors. The Porsche adapters I made were a little sketchy but they are working perfect too!

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daywilmOffline
Post subject:   PostPosted: Apr 16, 2016 - 09:26 PM
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Jim, thanks for your response. For some reason I missed it until today. As it turns out, I'm doing something similar. I had an auto A/C shop build me some hardline tubing from the compressor ports up to the front of the compressor right under the pulley. I'll attach my hoses at that point. My setup is similar to Gwader's. I plan on putting my condenser in the space behind the driver. It will be crowded (battery, condenser, fan and oil filter) but I'm hoping to make it all fit and have enough air flow.
 
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jdinnerOffline
Post subject:   PostPosted: Apr 19, 2016 - 10:15 AM
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That is where I had it on the red roadster and there was not enough air flow. It worked when you sprayed water on the condensor but driving, no.

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daywilmOffline
Post subject:   PostPosted: Apr 19, 2016 - 04:00 PM
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Jim, I've been looking at the pictures of your yellow coupe and I've found a couple of pictures of the condensers but I can't make out where they are located on the car. Did you mount them somewhere in front of the radiators?
 
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