Maybe that's why Grady considers upgrading the condenser an integral part of the R134 conversion. It's often been stated - "there are no drop-in conversions". Everything has issues, whether its the lower cooling capacity or potential maintenance issues. It is well known that R134 does not cool exactly the same as R12, uprating the condenser at the same time to overcome this would seem to make perfect sense. I're really glad that it's even available! Dave Swingle --- In dmcnews@xxxx, "Walter" <Whalt@xxxx> wrote: > How sure are you that the 'performance increase' in your system isn't due to > the double core condenser in spite of using R-134a? > > I know a guy locally who recently converted his DeLorean from R-12 to > R-134a. He is unhappy with the results. With the R-12 it cooled well, now > with the R-134a he says that it barely cools enough in hot weather, but is > okay any time else. This guy is also a professional mechanic, SAE > certified, etc. > > Walt Tampa, FL