[V8] AC conversion Pressures

[kyle leatherwood]

 The general rule of thumb is to fill it with 80% of the factory r12 fill.  You are correct, the high side pressures do tend to run higher with r134a than r12, meaning that it does not cool as well when the vehicle is sitting not moving.  I did help that out a little by putting a small 1200cfm pusher cooling fan on the front of the a/c condenser on the blue 1990 I used to have.  It really helped bring the high side pressure down a little and it used to blow nice cold air on 90 + degree days, even at idle.

 

 
> Date: Fri, 26 Jun 2009 10:23:25 -0700
> From: wilke_jb at yahoo.com
> To: v8 at audifans.com
> Subject: [V8] AC conversion Pressures
> 
> 
> I converted my v8 to 134a. It blows ok cold, but not quite enough. I know that 134a isn't as efficient, but I thought it would be better than this. I was wondering if anyone knows what the perfect pressure is for the A/C system On a 1990 v8 that has been converted? Say at 70 deg amb? Or, do you know the fill amount in terms of lbs for a converted system? Thanks in advance.
> 
> 
> 
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