Date: Tue, 3 Jul 2012 10:48:42 -0500
Reply-To: JRodgers <jrodgers113@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: JRodgers <jrodgers113@GMAIL.COM>
Subject: Re: Bus Depot A/C Compressor Sanden 508
In-Reply-To: <CAFnDXk1UJ7qegG1eRm59agSWgHofYO69qN+zKmOFskm5iwPO1A@mail.gmail.com>
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The only problem there might be is the compressor will wear out sooner
with 134a. It stand to reason. The head pressure for the 134a is higher
than that of R12, so the compressor works harder. As to how much sooner
it will wear out? Who's to say. An older compressor with lots of running
miles on it might fail tomorrow with the higher load. Then again - it
might not. But ti stands to reason that an older compressor running
under a new higher head pressure may fail sooner.
I don't remember the number now - but you might look in the archives
for a discussion within the last year about getting a BRAND NEW Sanden
off E-bay for a couple of hundred bucks and simply swapping the hardware
off the back of your old one onto the new one thereby having one heck
of a compressor- a new one at that.
John
On 7/3/2012 10:14 AM, Jim Felder wrote:
> Or, it may be old stock and they were trying to warm people not to use
> household freon in it back in the day when those were the two choices.
>
> In any event, they are all the same is what I have been told by many
> an experience AC technician. Not to worry. When you add oil, the only
> oil you will be able to buy is the oil you need.
>
> I have converted about six (soon to be seven) auto AC systems to 134,
> never changed a compressor nor was I ever warned to.
>
> Jim
>
> On Tue, Jul 3, 2012 at 9:33 AM, Dave Mcneely <mcneely4@cox.net> wrote:
>> ---- J Stewart <fonman4277@COMCAST.NET> wrote:
>>> I ordered one, it came while I was out of town. Before ordering I called and asked if it was R-134 compatible and was told yes, either R12 or R134. It has a sticker on it that says "R12" and thats it-so is it safe to assume it is NOT compatible with R134? In which case it is going back, I never would have purchased a an R12 only compressor! Any have any experience with this?
>>
>> I can't speak for the Bus Depot sourced compressor. I did have my AC system converted to R134a by a very reputable (and capable in my experience) shop. They did not change the compressor, but rather cleared the system with a solvent for the purpose, and used the new R134a compatible oil. I would discuss the matter with the vendor and perhaps the manufacturer. R134a is a higher pressure gas than is R12, and a compressor special for it might run at higher pressure. But my system cools well.
>>
>> That said, a lot of labeling on products is CYA motivated. I wash wool items in my washing machine on delicate setting with mild detergents all the time. Almost all of them are labeled "Dry Clean Only." But, I learned from my mother, who learned from her mother how to wash clothes. I doubt my grandmother, and certainly not her grandmother, ever took anything to a dry cleaning establishment. Good luck. mcneely
>>
>>
>>>
>>>
>>>
>>>
>>> Jeff Stewart
>>
>> --
>> David McNeely
>
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