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Custom Hose Fitting Question

bearing01 on Mon July 07, 2008 11:45 AM User is offline

Year: 1986
Make: BMW
Model: 325es
Engine Size: 2.7L
Refrigerant Type: R12-> R134a

Hey all,

Bosch-Behr compressor suction line assembly

....>-----(#10 tube)-----OOOO(#10 hose)OOOOOOO--(#12 tube)--...7/8" inner thread.....................................................................1-1/16" inner-thread
...27mm wrench...........................................................................32mm wrench

I'm investigating making custom hoses for my retrofit. I am wondering if I will have a problem when making the following hose. On the Bosch-Behr compressor suction inlet it uses a 32mm (1 1/4") nut while the hose and tube are both a #12 and the opposite end fitting is a #10. On a 2nd old hose assembly, for a Seiki-Seiko compressor, on the questionable end I have a #10 hose with a #10 tube coming out of it also with the 32mm nut. The thread inner diameter on the 32mm nut was measured at 0.98" so I'm pretty sure it's a #12 fitting.

Question: If I run a #10 hose can I put a #10 fitting on one end and a #12 fitting on the other? Or is there such a thing as a reducer that I can put in to step up to a #12 fitting?

Also, does ACkits sell AC tubing? I couldn't find it. Or should I just run hose everywhere? Or do I just reuse the old tubing and clamp the new hose onto it using a Ferrule?

Edited: Mon July 07, 2008 at 11:50 AM by bearing01

TRB on Mon July 07, 2008 1:16 PM User is offlineView users profile

No we do not sell hard tubing. yes you can use barrier hose with fittings. Check the fitting section in this link for set-up and step-down fittings.

http://www.ackits.com/additional/main.htm

-------------------------

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Contact: ACKits.com

CCWKen on Mon July 07, 2008 3:43 PM User is offlineView users profile

It's not uncommon to reuse the hard lines and re-tube with barrier hose. Did a few of those a while back. Bending aluminum tubing is not fun and gets messy in a shop that doesn't have the equipment. (I used the wet sand method once.) While using hose everywhere will work, it doesn't have the "factory look". That's what most of the add-on systems use.

-------------------------
Ken Kopsky

Custom Car Works
"Rules are for the guidance of wise men and the obedience of fools."

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