BarryA Posted September 17, 2008 Report Share Posted September 17, 2008 Sometime over the winter, I'm planning to add a Vintage Air heat/defrost/ac unit to my 79 KC - from what I can remember from the 79 I had years ago that had ac, both the compressor and the smog pump mount to the driver's side of the engine, but I can't seem to find any good clear photos of how the bracket and/or idler/tensioner are set up. Removing the smog pump is NOT an option - if anybody has good photos of a combination smog pump / ac compressor mount, I'd love to see 'em, and on the off chance that anyone's removed the ac from a 620 and has the bracket and related parts, I'd be interested in buying those parts....... Quote Link to comment
fisch Posted September 17, 2008 Report Share Posted September 17, 2008 BArry did you see the thread about the 521 ac yesterday?http://forum.ratsun.net/showthread.php?t=6430 And there was another mentioning 620 ac's that seem to mount on the passenger side.http://forum.ratsun.net/showthread.php?t=6426 Good luck! Quote Link to comment
BarryA Posted September 18, 2008 Author Report Share Posted September 18, 2008 compressors, and my memory of the a/c in the one owner yellow 79 5 speed CA smog KC I owned back around 1986 (never shoulda' sold that truck - oh well) is that it had a Hitachi rotary compressor that I'm 90+ % sure was mounted on the driver's side. One of the trucks I looked at in Oregon a couple of months ago was originally an a/c truck, and still had what appeared to be a rotary compressor/smog pump bracket on the driver's side as well - no compressor, smog pump or hoses, just the bracket. Given the photos in the two threads and the Hitachi compressor on my old truck, I'd guess there must've been more than one type of dealer installed a/c kit. I remember being shocked at the cost of replacing the Hitachi rotary compressor (the a/c didn't work very well due to internal leaks in the compressor - wouldn't hold an R12 charge). No Sanden/Sankyo conversions were available at that time, so I just lived without it. I also remember thinking that it didn't make much sense to have the compressor on the driver's side with all the smog plumbing, the steering box, and the intake and exhaust already on that side and the passenger side essentially wide open except for the alternator. Depending on what I can turn up, I may have to see if I can fab up a pair of brackets for the right side of the engine - one to mount a Sanden compressor below the radiator hose, and a new bracket for the alternator that would move it up by the head. Quote Link to comment
kaoss Posted September 18, 2008 Report Share Posted September 18, 2008 I can get you a pick of mine sometime at the beggining of next week. It mounts to the driver side. All of my parts are already sold. Quote Link to comment
SHADY280 Posted September 18, 2008 Report Share Posted September 18, 2008 would z car stuff work, the s130 cars, i have like 3 compressors and driver side mounts that id sell for uber cheap, like 10 plus shipping type of thing, any takers? all worked when i scrapped the cars Quote Link to comment
slodat Posted September 18, 2008 Report Share Posted September 18, 2008 What kind of compressors to the 240sx's have? I'm planning on doing a vintage air system in my 521. I'm wondering if I can use the stock compressor from the donor engine.. Quote Link to comment
BarryA Posted September 18, 2008 Author Report Share Posted September 18, 2008 would z car stuff work, the s130 cars, i have like 3 compressors and driver side mounts that id sell for uber cheap, like 10 plus shipping type of thing, any takers? all worked when i scrapped the cars section at P&P looking at ac compressor / smog pump brackets on whatever early carbureted cars/trucks I can find. Definately need to try to find an L20B engined 720 with ac to look at, too - quite a few of them seem to have ac out here, they're late enough to use rotary compressors, and they're probably the closest "cousins" to the 620 that I'm likely to find. Best case scenario would be to find something that mounts to the right side of the block and can be modified to work with a Sanden compressor, but I'll take what I can get. Quote Link to comment
BarryA Posted September 18, 2008 Author Report Share Posted September 18, 2008 What kind of compressors to the 240sx's have? I'm planning on doing a vintage air system in my 521. I'm wondering if I can use the stock compressor from the donor engine.. compressor that's intended to fit that engine. You might want to download Vintage Air's catalog (it's in PDF form on their web site) - there's a lot of very good info on sizing compressors and condensors to the system, along with spec info on their system components. Quote Link to comment
slodat Posted September 18, 2008 Report Share Posted September 18, 2008 If you are going to run the Sanden compressor, you could get the universal bracket that Vintage Air sells and combine that with a Z or ZX compressor bracket. I've read through their catalog. Lots of good info. Quote Link to comment
SHADY280 Posted September 19, 2008 Report Share Posted September 19, 2008 ill get some photos monday of the zx bracket with compressor mounted for you, i happen to have the whole motor laying on the floor totally assembled. Quote Link to comment
BarryA Posted September 20, 2008 Author Report Share Posted September 20, 2008 ill get some photos monday of the zx bracket with compressor mounted for you, i happen to have the whole motor laying on the floor totally assembled. hopefully there will be some early Z's and/or early 720's with ac on hand to examine.... Quote Link to comment
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