I'm thinking about this compressor for my 71 GS 455. I know it hasn't been out that long, but I'm wondering if anyone here is running it, and what their experience has been? Thanks,
The Pro6ten compressor has been out since about 2005 or so. I have used 5 of them since about 2009 on customer vehicles without issue. You may hear about breakage at the compressor mounting points as you search around the Internet. That was an issue on some of the early units and was resolved quite some time ago. I've never seen one break myself. I'm a big fan of the original A-6 compressor. However, due to quality issues with new/reman A6 units these days, I prefer the Pro6ten. IMHO, the Pro6ten is a very good investment if you're not going for 100% original appearance. Hope this helps.
Thanks for the info. As for original appearance, I don't look like I did in 1971 so why should my car? :laugh:
By Joe, I think you've got a point there! (Re: Pro6TEN Compressor) Hi Dennis and V-8 Buick "mature types" Ooh! I do like this line!! :TU: It's a keeper! In my case I was 5 years old when my wagon rolled off the assembly line. Some of board members weren't even a "glean in their parent's eyes" when their cars were built!! Cheers, Edouard :beer
Good point! :beers2: I think you'll like the Pro6ten. It has a lower displacement than the A6 but you'll never miss it unless you live in the desert in mid summer. Your original system has lots of overhead to begin with. Getting rid of the A6 compressor (with its problematic 2 piece shaft seal) makes your system a great candidate for R12 as long as you do the rest of the system up properly to prevent leaks. That shaft seal is the weak link in these cars. Good Luck
Re: By Joe, I think you've got a point there! (Re: Pro6TEN Compressor) Just for the record, I have NO problem with people who want their cars to look exactly like they did when they rolled off the assembly line. Just like I have NO problem with guys my age who get hair transplants and spend a lot of time tracking down cheap sources of Viagra.
Re: By Joe, I think you've got a point there! (Re: Pro6TEN Compressor) :shock: I thought I was being discrete! Ok. Who squealed!!
I have it on my car because it is way easier to mount on factory 455 brackets than making my own brackets. Plus the factory brackets are NICE and rigid.
I have a pro6ten ac compressor on my 70 stage 1, 470 JW built motor. In 2 years I have had 3 pro6ten compressor failures. It appears that the voltage drops off for the ac clutch and the clutch burns up. A couple of questions. 1. Does anyone make a clutch replacement kit for the pro6ten compressor? 2. Where is the most reasonable place to purchase either a new compressor or a clutch from a used one. 3. After reading a few posts here, I believe that the cause of voltage falling off was the fuse as it was corroded..... However is that really possible? Voltage @ compressor would run 12.9-13.3 and then drop off momentarily to less than 7 volts... I tracked the voltage at the compressor and at the compressor relay. I am quite sure the reason for the voltage flux is somewhere between the fuse box and the relay (connection between fan relay and ac compressor). I have spent many hours researching the voltage drop, including having the ac guy vacuum out, recharge etc...any and all help would be greatly appreciated. And thanks in advance for you help. Byron
One of the bigger reasons for compressor replacement failure is that the system hasn't been properly cleaned of contaminants. Usually a replacement has been used because of catastrophic failures of the original compressors due to lack of oil. I almost ALWAYS install filters on both the low & high sides to hopefully catch ANY particles from reaching the NEW compressor. Although this may be OVERKILL I don't want a return/failure from something I've already done.
Tom, thanks for the info. Dan the ac guy cleaned the system 3 or 4 years ago when we were hooking up the ac. The ac had been an open system for years, so he did clean it. I will talk to him about the filters..... Still hoping to find a clutch rebuild kit. No luck so far... Anyone's help is much appreciated. Byron
I have a pro6ten but haven't had to replace it and am now well into my second season here in hotlanta. I did have an issue with the ac switch on the mode switch in the dash. There is a little reed switch with little round contacts that look kinda like a point set. My compressor kept cutting out and I had to keep jiggling the switch. I took the dash out and used a small flat file between the points and problem cured. This reed switch is what pulls in the compressor clutch. The relay activates the high speed blower and bypasses the blower resistor array.
I don''t mean to reopen a Frankenthread, but... Discussion of the Pro6Ten compressor fell off, and I'm curious how they are working out for the folks that have had them installed for a while. What say you? To date, I have 10 of them on customer cars (2005-2014), along with 3 of the competing S6 cmpressor (Denso based, A6 Direct Replacement compressors). 2010- 2014) Of the Pro6Tens, I've seen 1 clutch coil failure. It was actually a thermal fuse embedded into the coil that opened. High clutch temp caused by excessive "High Side" pressure, which was ultimately caused by a dead 50 YO fan clutch. No other failures when the system was properly prepped/rebuilt. Of the S6, I've had no complaints at all. No failures and the customers are quite happy. Is anyone else here using the S6? I'm a big fan of the original Harrison/Frigidaire A6 Compressor. However, "quality" new or Re-man A6 units are hard to find these days. Unless you want original appearance, the Pro6Ten or S6 are the way to go. IMHO.
Since I replied last year, thought I would give an update. I went through the year in 2014 without any additional issues. This spring, I fired up the AC and it worked as well as could be expected. I have not driven a bunch this year due to another project but the AC is doing what it is supposed to. On a side note, I did replace the reed switch in the AC switch, my voltage came right up and stays in the 13.5+ range. No more issues with the pro6ten. Looking back, it was probably the switch that caused the compressors to fail.... Byron
I think I am having a very similar issue with my AC. This "reed" switch that you are referring too.... where is that and is there a photo by chance. Maybe I need to look into changing mine. I do not have the pro6ten, but my brand x compressor will smoke if I hook it up and attempt to run. The voltage is not 12 or 13 at the compressor.
I'm wondering what the difference is between the Pro6TEN and the aluminum case A6 replacement units you can purchase at pretty much any auto parts store now? Looks like they have repackaged Denso and Sanden units that will fit where an A6 once resided.
Since I started this thread almost two years ago, I need to say that I installed the Pro6Ten on my GS and it's been working fine the past year-and-a-half although I only run it on real hot days with the top down, so it hasn't got that much use. But so far, I'm happy and would recommend it.
