AC conversion - Page 2 - ZR-1 Net Registry Forums

WARP TEN · 06-03-2019

You might consult Marc Haibeck. When he changed my '93 over to R134a I am pretty sure the only thing he actually changed was the inlet valve for the Freon. He said that a GM bulletin that was issued at the time said you didn't have to change any equipment but did have to make sure the old system was completely evacuated. I think he did it a couple of times. --Bob

We Gone · 06-03-2019

Marc also did my 91 many years ago. Works ok but was never as cool as with R12.

06-03-2019	#11
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,096	Re: AC conversion You might consult Marc Haibeck. When he changed my '93 over to R134a I am pretty sure the only thing he actually changed was the inlet valve for the Freon. He said that a GM bulletin that was issued at the time said you didn't have to change any equipment but did have to make sure the old system was completely evacuated. I think he did it a couple of times. --Bob __________________ 2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough"

06-03-2019	#12
We Gone Join Date: Apr 2004 Location: ATL. GA. Posts: 2,170	Re: AC conversion Marc also did my 91 many years ago. Works ok but was never as cool as with R12. __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold