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Charging adapter for Corvette Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> AC Auto Repair Help Forum bigjohn User Aug 22, 2010, 11:53 AM Post #1 of 6 (2080 views) Charging adapter for Corvette Sign In 1988? Chev. Corvette small block 60,000 Trying to charge brother inlaws air conditioning on his 1988[?] vette, what is the special charging adapter called that is used on older GM cars and where do I find one? bigjohn Hammer Time Ultimate Carjunky / Moderator Aug 22, 2010, 12:26 PM Post #2 of 6 (2076 views) Re: Charging adapter for Corvette Sign In What are you planning to charge it with? That is an R12 system. That's why the fitting is different so the refrigerants don't get mixed. The system has to be retrofit to R134A before it can be charged which means removing all R12 oil left in the system and replace it with Pag oil and changing the charge fittings. Some cars need additional fans added too. This isn't a DIY type job. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. Tom Greenleaf Ultimate Carjunky / Moderator Aug 22, 2010, 2:13 PM Post #3 of 6 (2071 views) Re: Charging adapter for Corvette Sign In If you are staying R-12 which I strongly suggest, the adaptor for high side needs to go from 3/16th to 1/4 NPT. Lower left of this page shows what it looks like.......... http://www.acsource.com/...serviceadapters.aspx As HT said they did that so you wouldn't mix them up. Don't leave the adaptor on as it could become a source for a leak. Same store at that site has a low price gauge set that will do either R-12 or 134a but for GM and Fords for many years you needed a high side adaptor still. Didn't Ford use a different one than GM and many others they were the same. Just ask at any real parts store or tool truck for the high side GM adaptor. If going or using 134a you need both which are available anywhere then it's standard for all "Acme" quick connects - high side is larger with those so they aren't mixed up, T Hammer Time Ultimate Carjunky / Moderator Aug 22, 2010, 2:15 PM Post #4 of 6 (2065 views) Re: Charging adapter for Corvette Sign In Let me make it clear. You cannot simply change the fittings and put R134 in it. It has to be retrofit first. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. bigjohn User Aug 22, 2010, 5:23 PM Post #5 of 6 (2051 views) Re: Charging adapter for Corvette Sign In In Reply To (This post was edited by bigjohn on Aug 23, 2010, 3:24 PM) bigjohn User Aug 22, 2010, 5:23 PM Post #6 of 6 (2050 views) Re: Charging adapter for Corvette Sign In Thanks Tom you helped a lot!   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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