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A/C charge....should I or shouldn't I??

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I have replaced my AC system from the firewall forward with the stage 2 kit from Original air  https://www.originalair.com/71-73-ford-mustang-engine-compartment-upgrade-v-8-134a-w-adapter-brackets     .  I also flushed out the evaporator until clean fluid came out and  I am ready to vacuum the system and charge it for the first time.  Being in the GA mountains I have a hard time finding a shop that knows what they are doing, this goes so far for ac work on the Mustang as well as other work (includes 2 classic car resto shops).  Soooooooooooo in preparation for this ac I bought a set of gauges and a vacuum as well, watched some youtube videos and it seems pretty straight forward if you watch what you are doing and take your time.  I have plenty of time to do this so the question is, should I????

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What refrigerant are you using?

It is pretty easy to do any of the refrigerants, so even moderate skills can get the job done safely.  If you can pump the vacuum down to -31 inHG and it holds on its own for 30 minutes or so you are probably sealed well.  The only cautions are DO NOT over fill, and DO NOT charge through the high pressure port.




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Easy DYI.

Do not use Chinese no-brand refrigerants. I was recommended DuPont's: 


I was also told not to use a refrigerant that includes a leak sealer.



1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump

Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes

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14 hours ago, tony-muscle said:

Do not use Chinese no-brand refrigerants. I was recommended DuPont's: 

This is good advice regardless of what is being discussed.  Do not use Chinese *anything* if there is another choice.

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+1 in not using refrigerant that has leak sealer. Just get good straight 134a.  

Edited by turtle5353

1971 Mach 1

408C Stroker - C4 w/3,000 stall - 8.8" Rear w/3.73's - Disc brakes all way around.



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