986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

JFP in PA · 02-05-2011, 06:42 AM

First, you need to be very careful about this; hot spots and over heating can be death to these engines. These cars should be filled with coolant using a vacuum system that eliminates any chances of air entrapment in the system. The system sells for about $100 (US), and fits any car. As the radiators are for the most part lower than the engine, replacing parts up front has trapped air in the system. The best way to get it out is using vacuum pulled on the fill opening in the rear boot. Most independent Porsche shops, and for that matter most well equipped shops, have vacuum fill equipment that can do the trick for you.

There is also a bleeder valve in the rear boot (it is the only one on the system) that can get out relatively small amounts of air, but using it takes time and is not always completely successful in getting all the air out. There are several write ups on how to use this valve.

Makes some phone calls and find out who has the vacuum system; with it you will be air free in about 5 min.

02-05-2011, 06:42 AM	#2
JFP in PA Registered User Join Date: Feb 2005 Location: It's a kind of magic..... Posts: 6,273	First, you need to be very careful about this; hot spots and over heating can be death to these engines. These cars should be filled with coolant using a vacuum system that eliminates any chances of air entrapment in the system. The system sells for about $100 (US), and fits any car. As the radiators are for the most part lower than the engine, replacing parts up front has trapped air in the system. The best way to get it out is using vacuum pulled on the fill opening in the rear boot. Most independent Porsche shops, and for that matter most well equipped shops, have vacuum fill equipment that can do the trick for you. There is also a bleeder valve in the rear boot (it is the only one on the system) that can get out relatively small amounts of air, but using it takes time and is not always completely successful in getting all the air out. There are several write ups on how to use this valve. Makes some phone calls and find out who has the vacuum system; with it you will be air free in about 5 min. __________________ “Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein Last edited by JFP in PA; 02-05-2011 at 06:50 AM.