Leon993

I just moved to Texas and Im DREADING the impending heat coming up, which sometimes starts as early as February.

I want to upgrade my AC, I wants SUPER performance in cooling. What parts do you guys suggest replacing? Whats a good aftermarket company that can help me with this?

Thanks,

Leon

griffiths

993's are R134a, so no conversion option on refrigerant.

They also have the serpentine version condenser.

Most of the hose lines are metal however there are a few rubber sections
you'll want to inspect:
at the compressor,
at the condenser,

Assuming your car is several years old now chances are it had lost refrigerant and refrigerant oil at some point. Logical thing to do is to take it to a shop and throw on some gauges and get some readings, at idle:
low side & high side pressure, and note the ambient temp at the time,
best to this when the ambient is 80F or more.

Common failure in the refrigerant circuit is the evaporator, so here is a chance for an upgrade, such as this:

Kuehl Evap

at the same time you'd want to replace your drier and might as well hit all the orings while your at it, along with adding some PAG oil at recharge.

skywachr

Also make sure the pollen filters have been recently replaced.

ehanauer

My condenser was replaced with a serpentine model and it made a huge difference.

Pete Lech

My 993 will not cool the center vent air below 50 degrees*, which I believe is an expansion valve set at too high a temp. Nevertheless, it still will cool fine at over 100+ degrees outside but requires a higher fan speed than if the temps were lower. (Nosier too.) It has never been serviced since I bought it in 2000 as the temps have always been this way.

You might check this element out if you take the car to a shop.

*My BMW vents at 35 degrees and the 997 is closer to 42 degrees, but don't remember exactly)

Leon993

Thanks guys, much appreciated. I definitely want an upgrade across the board and modernize my system.

JB 911

Welcome!

What part of Texas are you in? We are a big state. Dallas, where I am, is drier than say, Houston. If you are in Houston, it is hot and humid. Good luck!

mdude

If you're in Dallas, Cars and Coffee is on the 1st Sat every month in Plano. Coming from Irvine, I'm sure you're familiar w/ this ritual.

mike cap

Pete is exactly correct. The secret to driving these cars in the brutal hot months and humidity is a windshiled sunscreen and park in the shade whenever possible. One the interior heat soaks it's all over - the A/C will never catch up.

hkspwrsche

White 993 stays cooler

Pete Lech

I have an aluminized cover just for the roof and windows that does a great job on hot days and is easy to put on. Much easier than a full car cover for shorter stops.

I bought it years ago for my 1986 911, and it fits the 993 perfectly - does anyone still make these?

pp000830

All great ideas above, my experience with the 911 is that only so much improvement can be done by lowering vent outlet temperatures. It can never go down near freezing as ice will form in the system. The amount of glass, the engine heat soaking of the body are the major contributing issues. Low cost suggestions include adding a cut to fit a space blanket behind the rear seat as an insulator or find a way to duct air directly from the under dash front air handler through a tube to aim directly on your legs in the front seat. Also minimize sitting heat soak by putting shades in the windows when the car is parked.
Andy :-)

T0M993

^^^

Benton

Consider some of the newer hi-tech window films that have been discussed recently. 3M Crystalline is an option, plus others. Lower interior temps and UV infiltration with a minimal change in the darkness of the windows.

Leon993

Absolutley! I do have the Hüber Optik ceramic window tint, its a german product that is placed on the windshield of the NASA space shuttle. Its top of the line. However, good AC is a must. Im thinking of a solid upgrade on everything.

My 993 is a DD and I've made the existential decision to keep it forever (assuming I never need to sell it). So might as well put some money into the AC system.

Im in Austin, Texas. Thanks Dallas fellas for the Cars and Coffee invite! One day soon!