Choosing an A/C path to travel
 

Well it is summer, from all the A/C posts. I have been contemplating this project for a while, but am having a hard time jumping in. I guess I have paralysis from analysis.
I found quite a bit using the search forum. It seems that most feel the original system should just be replaced, aka... start fresh. I have an 88 coupe, and even though only blows warmish air, all of the components seem to be in good shape. I would say that I do not know much about the car, but since it came from PA, and the owner said he never used A/C, it probably needs a recharge. This is where I start getting that glazed eye look. Should I have it charged, and see where I stand, or am I wasting time and money, because I will lose the freon when I enhance the system.
I know even a good OE system needs help, like additional condensers or new fans, but what is the best way to figure out where to start? surely some of the parts are keepers.
I am considering replacing the hoses and compressor, and then going from there, being as it seems most agree the hoses should be upgraded to barrier, and I figure it is a safe bet that a newer compressor would be more efficient, and neede with a change to R134 fro R12.
A little nudge would be greatly appreciated.:p

Cheers,
Emerald

As you have already gathered there are lots of options. Start by defining your objective and set a budget. How good a system do you need and how much are you willing to spend? To get started you could simply charge the system and see what you get. You could get lucky and your system may hold a charge and cool OK. Chances are, however, with an 88 it won't. If your system is original every major component is beyond its expected life (compressor, evaporator and blower motors). The most economical solution may very well be a barrier hose, evaporator, and compressor kit.

Welcome to the slipery slope. Good luck!

Thanks for the reply Mark. All of the system is original, so I guess you have a point about it's expected life. I want cool air for a daily driver, and Nashville weather is hot and humid. I guess it is looking like I need a new compressor, evaporator, and hoses at a minimum, which would be my jumping in point.
Any thoughts on rennaire hoses compared to griffiths, they are on sale for about 1/2 of griffiths.
Thanks for the help.

Cheers,
Emerald

Have the system tested for leaks first to ensure that the condensors and evaporator don't have leaks. Check the underside of the engine decklid for the telltale oily stripe above the compressor that will tell you if the shaft seal is leaking. If everything checks out, like Mark said you may get away with a simple recharge. The old hoses, even when new, leaked refrigerant so if you're looking to upgrade you'll want new hoses for sure.

If you are looking at an upgrade I would get a complete system from Griffiths or Rennaire. If you start replacing components you'll probably end up there anyway and a kit price will be cheaper than buying one component at a time.

For reference I have the Rennaire system II with 134a. The decklid condensor is the only original part left and I routinely get upper 40 degree vent temps when Arizona summer temps are approaching 110 degrees.

Well I ran out and checked the deck lid..... and I have a racing stripe.
Thanks for the hint. I am leaning towards starting with a rennaire kit, or at least the hoses to get the project started.

Thanks for all the input.

Cheers.
Emerald

I have custom which still isn't where I want it to be in terms of performance. If you custom make hoses, a tip. Buy the hose and fittings, fit them and mark with a Sharpie, THEN get them crimped. Those hoses don't bend or twist much. Especially with 90 degree fittings. The crimping charge is separate anyway, so you don't save money. Just another trip to the a/c or NAPA shop. New Viton seals on the hoses. If you use old condensers, take out and pour denatured alcohol in it and shake well and drain. Let air dry in the sun. Change out the R-12 fittings if you rebuild the compressor and replace with R-134 fittings. Do a search on "Jim Sims Subcooler" it's sort of like the Griffiths one, but you can make it for about $20.

Emerald,

Here's some information that might be helpful... There's a lot of ways to achieve cold air for your car, we're fortunate to have some good suppliers who have worked out systems that will provide good cooling, if you have the time and money...

Remember that our hosts carries most of these products...

http://www.pelicanparts.com/techarticles/911_ac_1984/911_ac_1984.htm

Thanks for the link Mitch. There is a lot of info out there. It seems that there is not one clear route, but that most use parts from different vendors. I am getting closer.

Cheers,
Emerald

I went with the Griffith's system. Just like you I did a lot of reading first. I do not have any personal experience with the other A/C vendors. I can tell you that the Griffith's system is not cheap but it is very well engineered. All of the parts are top quality. The instructions are very detailed and clear. Griff is available to answer any questions. I don't have any affiliation with Griffith's except as a customer.

I am sure I was a bit of a pest because I wanted to really learn about vacuum and A/C pressures. I had a lot of general A/C questions and he was patient enough to answer my questions.

Thanks for the input GH85Carrera. Everything I have read about Griffiths has been good. I think I will start by getting the Rennaire hose set, due to it being less money and still good opinions. I will then look at condensor options and a new compressor.
Thanks again for all the input.

Cheers,
Emerald

Emerald,

Be careful, don't box yourself in, some of the suppliers are pretty one way about only selling their products as a "package". So if you know what your final buy out is going to be then you might want to see if you can piece meal it, or it has to be part of a kit or package. Also remember that our host carries most of this...

Thought I would give a quick update. I looked at all the posts I could find, and looked at how others had done it. I ordered a kit from Rennaire today, consisting of new hoses, evaporater, condenser and pro cooler. I will flush my front and rear condensers. I may also add a fan to the rear condenser. I will try and keep updated as things progress.
Thanks for all the input. I am looking forward to cool air as I am transitioning this car to a daily driver.SmileWavy

Cheers,
Emerald

Good choice. Your post does not indicate that you have made the decision to replace the compressor and you have already determined that your compressor is leaking oil. Now is the time to replace the compressor if the budget allows. Good luck and let us know if you need any help along the way.

please keep us posted. I am one happy new install from someone on pelican from ordering myself a new system.

Quick question for the rest of the guys.

Anyone have thoughts on the condensor pictured below. It is mine.


http://forums.pelicanparts.com/uploa...1247026203.jpg

oops.. my bad. Yeah I'm replacing the compressor as well. I had that dreaded racing stripe on the rear deck lid. I decided to go with a kit since it now has all the little pieces parts. I am keeping front and rear condenser, and everything else will be new:D
Cheers,
Emerald

Well the rennair system 2 came. Now for the fun part. I plan in breaking it into segments. I want to flush my front and rear condensers, and then I will probably start with the evaporator.
I'll try and keep my progress posted.http://forums.pelicanparts.com/uploa...1247970873.jpg

Cheers,
Emerald

Oh my, well Break a Leg Brother!

Thanks Draco,
I won't be setting any speed records, but looking forward to the adventure.

Cheers,
Emerald

I cant wait to see how it goes. Take lots of pictures and dont be shy with your project.

AC was on my list till I found out I have 2 broken head studs.

Apparently I am going to have to reprioritize..........

sorry to hear about the head studs chocolatelab. I will take my time and be thorough, maybe someone will benefit from my mistakes :D

Cheers,
Emerald