Think that it’s perhaps appropriate for me to summarize my experience with upgrading my A/C on 911’s. So please bear with me.
Back in about 1999, I had my first experience being a passenger in a 993 sitting in traffic in downtown Toronto in 95 degree scorching sun. I was taken aback as to how effective that A/C was.
So when I decided the convert my ‘86 3.2 to a 3.4 Turbo a year later, I thought, well, let’s replace the A/c compressor with a 993 unit, upgrade the hoses and let’s eliminate the rear condenser and replumb with a 993 condenser in the left front fender…a bit tricky with the impact bumper setup and lack of front “nose” that the 993 has. The result was outstanding…..great A/C and power to boot!
Fast forward to 2009 track day at Mosport where yours truly did a pirouette across the grass by corner three right into the wall and ended upside down. Not a scratch on me save for when I ripped my helmet off without undoing the strap. Car was a write-off, insurance finally paid up after a visit to the Ontario Court of Appeal, and I kept the wreck as the Insurance company never laid claim to it.
A year later I started building a backdated longhood, the RST, utilizing much of good parts from the wreck including the same 993 A/C setup and air outlet system (‘86) as in the wreck….post #104 on page 6 of my build thread
https://forums.pelicanparts.com/porsche-911-technical-forum/748639-evolution-carrera-rst.html
shows the general setup. The system works really well despite its oldish technology even without the fan for the belly condenser. And, yes, I did upgrade the evaporator to a Griffiths with even better results.
I’m now building another hot rod, an S/T which will have the full CR setup with two condensers, one in each of the front wheel wells and upgraded CR alternator. I’ll soon be starting this instal
https://forums.pelicanparts.com/porsche-911-technical-forum/1126335-sweet-transplant.html
So, looking back, I’ve been around the block so to speak…it will be interesting to compare my two systems once I finally have the S/T on the road, hopefully this fall.
My guess they will be comparable.
M2CW
Cheers,
Johan