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On 3 Sep 98, at 12:02, oofacts@earthlink.net wrote: > He said tht it would be better anyway until I could get my heater arms to > close off the air flowing to the front of the car, otherwise there would be > a lack of air to cool the engine during the hot months. Now there's no air > going to the heat exchangers at all to melt anything on them. Nevertheless, > is this good (enough) policy until I get my heater exchange boxes > sandblasted and re-painted? I don't think he's done you any favors. With no cooling at all the exhaust pipes can get to maybe 2000F. This is way above the melting point of aluminum. I think what your mechanic didn't understand was that VW designed these heat exchangers to have air flowing through them during ALL seasons, and the air flow system is designed to have the capacity to sustain this. I agree that most of the time the engine would be better off if this extra air flow was not diverted to the heat exchangers, but think about where the heat from a VERY hot heat exchanger is going to go when you're standing still and idling. Hint: The heads, the most heat sensitive part of your engine, are right above the heat exchangers. Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/