28-27-buick Posted May 17, 2012 Share Posted May 17, 2012 Good Morning. On my 91 reatta the AC hose on the passenger side is insulsted with a standard house foam pipe insulation. Is there a factory insulation for this or has someone put their own idea to work on this. the line comes from back by the fire wall and goes down the front of the engine about center. It goes quite close to the exhaust manifold. Also there is a short piece of black foam on the pipe by the shock tower.Herb Link to comment Share on other sites More sharing options...
Barney Eaton Posted May 17, 2012 Share Posted May 17, 2012 Below is a photo of a 19K mile 1991 coupe and you can see the insulation. Link to comment Share on other sites More sharing options...
28-27-buick Posted May 19, 2012 Author Share Posted May 19, 2012 Thank you for the picture it answered my question.Herb Link to comment Share on other sites More sharing options...
rjfranken Posted May 19, 2012 Share Posted May 19, 2012 (edited) A home repair would have a foam with a split running down it. OEM is 1 piece placed as the hose is made. There is nothing standard about standard house foam insulation in a car, period. In home there would be 2 cell types; close cell rubber which is very flexible and cheap large cell which is very stiff.The purpose of this is to keep heat from entering the (cold) low side hose and keep it from sweating. Edited May 20, 2012 by rjfranken I hTe mipad (see edit history) Link to comment Share on other sites More sharing options...
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