Convert/retrofit to R134a or stay R12?

[Ed Kellock]

What is the purpose of the manifold on the compressor?
On Jun 20, 2013 7:09 PM, "Tony Hoffman" <auditony at gmail.com> wrote:

> Honestly, at that price point, I'd be looking to change the compressor and
> lines to a different, more universal setup anyhow, and eliminate that
> "manifold" alltogether. The biggest thing is the time it takes to do the
> lines and find all the fittings you need. The rest is just bolt/weld up and
> go.
>
> BTW, that o-ring seal manifold part that leaks on 90% of the ones I work
> on, that is not replaced with the Compressor. That is a seperate part.
>
> Tony
>
> On Thu, Jun 20, 2013 at 9:18 AM, Kenneth Keith <auditude at cox.net> wrote:
>
> > So far what I’ve done is paid my $40 for “diagnosis” (“hey, your
> > compressor is bad), and taken my car home.  I was/am planning on looking
> > into a parallel flow condenser and new barrier hoses, and maybe an
> upgraded
> > evaporator from http://europeancoolerair.com/ftrmkt01.htm if it’s still
> > available, and a new compressor.  This would let me get the most out of a
> > R134a retrofit if I go that way now or in the future, but my thought on
> it
> > for now was that I will get some R12 off Craigslist for about ~$40/can
> and
> > go that way rather than the $80/can the shop would charge.
> >
> > If my compressor can be salvaged, then I suppose I’d want to go that
> > route.  However, the “diagnosis” I paid for didn’t break down which part
> of
> > the compressor was leaking.  I think he just looked at it and saw dye
> > around the outside and determined it was bad.  I haven’t gotten a chance
> to
> > look at it myself, nor to take measurements of the stock condenser to see
> > what parallel flow versions are the closest fit.
> >
> > Are there any parts of this Audi retrofit kit that are useful or
> necessary
> > for a conversion on our cars?  Specifically, I’m wondering about the
> > different pressure relief valve that’s included, which is not something I
> > think is changed on the “$40 retrofits” where just the fitting adapters
> are
> > added.
> >
> > C system R-12 to R-134a retrofit guide
> >
> > I believe that kit, if I can find one, would include the manifold o-ring
> > you mention is a potential leak source.  The kit seems to be around $333
> or
> > so if it can be found.
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