So search with my name. You will find tons and tons of R134 Retrofit information....
I am certified for R12 but I wouldn't spend the money for it. I have done hundreds of retros without any problems. I can get R134 to cool just as good, if not better then R12 in an R12 system!!! Just needs done properly. <img src="/forums/images/graemlins/smile.gif" alt="" />
Nah... I'm fully A/C certified/licensed... I won't waste my time with r134a on my personal vehicles... r134a work well in the newer vehicles and know all the systems quirks.
I'm licensed by IMACA for A/C and also ASE Master Certified. Not bragging but just want to make my point that I have been doing retrofits for 10 years now and I get the same A/C temps with R134 in an R12 system as if it had R12 still in there. There are little things that need taken care of to make this happen but it is cheap and easy.
My '90 Mazda 323 shop car blows 30* from the dash, my '84 Toyota truck used to blow 34* from the dash with a mechanical fan!! Now that it'll have an electric fan with the engine swap, I'm sure the temps will be even cooler.
Well now you tiring it impress me <img src="/forums/images/graemlins/pfft.gif" alt="" /> ... if your getting 30 degrees Fahrenheit at the dash vent, then your evaporator is below freezing!!!... 34-36 degrees is about right... yes r134a gets as cold as r12, it doesnÆt handle high heat loads nearly as well... I've had to do many retrofits over the years as well, done properly with new compressor, expansion valve, receiver dryer, hoses and sealS, PAG oil, complete flush and evacuation, then recharged by weight... I will testify that a properly functioning r12 or even an r12 system running Freeze12 will out perform the best-retrofitted r134a system out there!!à as mention prior, the new r134a system showing up in the new vehicles are much improved over the earlier systems due to design changes in the refrigerant systems as well as the electronic control systems.
