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#1
08-21-2002, 03:55 PM
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AC hose insulation
Hi,
Not too long ago, I got my AC in my 83 300D recharged with some new freon. Works like a charm, but I have noticed that the AC hoses, particularly the one that goes in front of the valve cover is missing large chunks of the insulation that used to cover it, and therefore is surely cooling down the engine compartment, and condensing water on the outside of the pipe. Id liek to know if anyone has replaced this insulation around the hoses, and if so, with what. Any info is most appreciated. Thanks JMH
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Current Diesels: 1981 240D (73K) 1982 300CD (169k) 1985 190D (169k) 1991 350SD (113k) 1991 350SD (206k) 1991 300D (228k) 1993 300SD (291k) 1993 300D 2.5T (338k) 1996 Dodge Ram CTD (442k) 1996 Dodge Ram CTD (265k) Past Diesels: 1983 300D (228K) 1985 300D (233K) 
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#2
08-21-2002, 06:27 PM
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The first thing that comes to mind is plumbing pipe insulation, the type used to cover hot water pipes. Not sure if it has as efficient an R-factor for insulating quality - but it will surely beat bare pipe!
Should be easy to install - perhaps holding it closed and in place with tie wraps. It's split down one side to allow opening and folding over a pipe. Can be found just about anywhere plumbing assessories are sold - Home Depot, Lowes, etc. Ken300D
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#3
08-21-2002, 07:00 PM
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I did something like that on my F-250, and worked great...that is, until the moisture in the air pocket in the freon froze up.
I say go for it! It's only a couple bucks at Orchard. 
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2001 VW Jetta TDI, 5 speed, daily driver 1991 Ford F-350, work in progress 1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D Spark-free since 1999
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#4
08-22-2002, 08:42 AM
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This insulation was a bit torn on my daughters 300D. After I R&R'd the engine it was completely done. I got some foam insulation at Home Depot that is used to insulate pipes in the winter to keep them from freezing. I cut two pieces, one with a notch to go over a bracket. I then neatly put it in place, it has a slit so you don't have to slip it over the end. Then I neatly put electrical tape in a few places. It looks great, performs well and has not yet been effected by underhood heat or oil spill.
This is an expensive fix. Even if it only lasts a year, anothe two bucks and ten minutes will have it like new again. Good luck,
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