ac high side pressure
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 42
From: Baltimore, MD USA
Look at the schrader valve. If it's deeply recessed, you need to purchase the GM 91 and latter high side service adapter fitting.
Here's a picture at this url
http://www.sjdiscounttools.com/msc90338.html
If the schrader valve is not recessed, you need the normal service adapter fitting. The fittings on the adapters are 1/4 male and 3/16 female. The only difference between the two service adapters is how far each can depress the schrader valve.
Here's a picture at this url
http://www.sjdiscounttools.com/msc90338.html
If the schrader valve is not recessed, you need the normal service adapter fitting. The fittings on the adapters are 1/4 male and 3/16 female. The only difference between the two service adapters is how far each can depress the schrader valve.
Last edited by Hooked on Vettes; Jul 24, 2006 at 12:45 AM.
Pro
Joined: Jan 2006
Posts: 667
Likes: 1
From: Centennial Colorado
Originally Posted by mfi
I want to hook up my gauges to the high side port on my 92. What type of port is this and what adapter do I need.
