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axl911 axl911 is offline
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Join Date: Sep 2002
Location: texas
Posts: 863
Originally Posted by 964 T #304 View Post
It is . I have a 92 and the manual has both listed as they made the change for the 93 year model which started in oct. I belive of 92. It says to use 1. 85lb of r134a, 0.7oz nd 8 ,compressor oil.Your head pressures depend on the ambient temp where you are at. @ Dallas you might have a temp of 77 deg today so the high press. would be 218 and the low would be about 8 to 14 psi. Like I said if you pm me an e mail add I will take a photo of the chart and e mail it to you . I am down the road a peice in Beaumont.
Are these pressures normally read at idle or at 2000rpm? Porsche manual says 2000rpm, but the shops i've seen read things at idle.

What's correct?
Old 03-30-2010, 01:03 PM
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