[dw1]

I know there are a very larger number of discussions on the poor air conditioning in the pre-1990 911's as well as many. many posts on fixes, upgrades, etc.

Well, here's a question: What is your experience on how often the a/c needs to be recharged to maintain reasonable cooling?

My 1987 black/black coupe has been converted to R134a (by the previous owner) and has Griffiths barrier hoses installed (by me), a new expansion valve and a rebuilt OEM compressor (again, by me with help from Griffiths). Oh, and I installed a pwm a/c fan motor controller. The condensers and evaporator are stock (in the near future this may change).

I'm finding I need to have a complete evacuation and recharge once per year to maintain some degree of cooling. Is this consistent with others' experience?

My other cars (admittedly much newer) have lasted over 10 years and the a/c is still blowing plenty cold.