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Thread: AC Lines for Turbo

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Posts: 21-30 of 70
2009-07-01 19:39:30
#21
Originally Posted by DC
Vad,
The NX lines will work.
But all NX AC lines are for R12 with R12 connectors.
You will need the conversion kits for R134a connections & install R134a O-Rings.

Converted my NX R12 AC lines to 1995 Sentra GXE GA16 AC lines.
The GA16 AC lines should fit perfect with the J-pipe.
Adding washers under the compressor will move the lines out further and is a good idea.
Wrapping the lines with the foam alumimum wrap found at AutoZone will also keep the lines (& your AC temp) colder.


I have to disagree, there are R134 NX lines from '93. I am almost positive that the one I have is R134.

Originally Posted by Vadim
A R12 to R134 Conversion kit consists of new nipples that you screw over the old ones. They are needed to fit the R135 refilling nozzles on the bottles that you buy in the store.

I just got back from the dealership, and they didn't have the line that Will suggested (92480-64Y05). It showed up as a GA line, and was at $150.

I talked to the parts guy, and he said that I might be able to take my line to an AC shop and get it fixed. Or do what they did back in R12 days. Use two worm clamps haha. He said that R12 was higher pressure then R134 and the clamps would hold it down without a problem.


I have a really hard time believing that even nice clamps would hold very well, let alone worm clamps.
2009-07-02 05:50:52
#22
Yeah, not sure how well it will hold up, but it should do the trick for this trip that I have coming up, if all else fails I will get a GA line, or AC delete

Originally Posted by Vadim

Well since my NX AC line broke I started looking around for alternatives. I went to the dealer to pick up a GA line, but they didn't have it. After talking to the parts guy, he mentioned about a way that people used to do back in the day, or if they had no other choice. Two clamps to the hose and to the fitting.

Removing extra stuff from the NX line



Voila



My placement of the clamps wasn't the best... but it seems to get the job done.



I filled up the AC to 40ish PSI, and used a UV detector, no signs of any leaks. Now I am finding out that you need to have vacuum in the line and you need a electric vacuum pump. So that sucks, I will have to go hunt/find one tomorrow I guess.
2009-07-02 09:05:11
#23
Originally Posted by Vadim

I filled up the AC to 40ish PSI, and used a UV detector, no signs of any leaks. Now I am finding out that you need to have vacuum in the line and you need a electric vacuum pump. So that sucks, I will have to go hunt/find one tomorrow I guess.


I think you may be getting into something that you do not really want to do yourself. You have to evacuate the system for hours to remove any moisture before filling with r134. You need a powerful pump that is designed for A/C system evacuation. I have an air powered one from harbor freight that I have never used (just like this a/c line), so I don't know how good the unit really is. You also need appropriate gauges, IIRC.

Nice fix job on the line, my old NX had the same exact setup on its line.
2009-07-02 11:16:30
#24
It's a lot more then I ever imagined, I guess I should have talked to my father in law, he works with AC's. I'm sure he has all the right tools, but being 750 miles away wont help.

I found a write up on how to use the electric vacuum pump, it doesn't seem bad. The hardest part is to find where to rent the sucker from.

DIY: replace your A/C condenser, vacuum & re-charge - Bimmerforums - The Ultimate BMW Forum
2009-07-02 13:25:53
#25
Harbor Freight has the vacuum pump. We picked one up the other day for my friend's Chevrolet 2500 HD. It just hooks up to your Air compressor, and has a hole in the bottom of it. It pulled about 30~35inHg worth of vacuum thru the system, using an air compressor regulated at 110psi. Only cost around $30 IIRC.
2009-07-02 19:02:04
#26
Originally Posted by Will
I have to disagree, there are R134 NX lines from '93. I am almost positive that the one I have is R134.


Will,
I have a 93 NX2000 and all of the NX's that Ive seen does NOT have R134a. They do use the same compressor as the R134a compressor but thats it. If you have a NX with R134a, someone swapped it like I did to mine...

Originally Posted by Will
I have a really hard time believing that even nice clamps would hold very well, let alone worm clamps.


Agreed. Ive always thought (& read somewhere) that the pressure for 134a is much higher than R12. But I wouldnt trust those worm clamps either..
Autoshops use to sell an Emergency Hose Repair kit that had a couple plastic sleeves & worm clamps.. I think that I still have a kit somewhere...

LOL!! We did use this trick for all types of hose repairs: heater hoses, ac hoses & P/S hoses..
2009-07-02 19:36:32
#27
Napa has them for about $160ish and I just got one at CarQuest for $130. Car Quest one is 3CFM, Napa one is 1.5CFM.

The the parts guy at the dealer said that R12 was higher pressure but, he might have gotten them wrong.
2009-07-02 21:40:20
#28
local auto stores ( i went to auto zone) has b14 a/c line for 45$
2009-07-02 21:45:36
#29
Nissan did not start using R134 from the factory until 1994.
2009-07-02 21:48:10
#30
Originally Posted by bj200sx
local auto stores ( i went to auto zone) has b14 a/c line for 45$


Woot! If my line breaks, I will get the GA line form Autozone then.
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