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On Fri, 2005-12-23 at 15:48, Jim Adney wrote: > On 23 Dec 2005 at 15:14, Jens Vagelpohl wrote: > > > > > On 23 Dec 2005, at 15:12, Jim Adney wrote: > > > Am I correct in believing that the beetle HEs don't work this way? > > > (ie, they don't have that relief valve?) > > > > They work the same way. When shut off, hot air is released via an > > opening at the front top of the heat exchanger. > > Okay, thanks. It makes sense that VW would make sure that the HE itself > couldn't overheat and melt the aluminum fins cast in there. Early heat exchangers did not have that relief valve in the heater box. http://classicvw.org/gallery/main.php?g2_view=core.ShowItem&g2_itemId=6411 -- Russ Wolfe '71 FB AT '66 FB MT '64 T34 (not running) '65 T1 (not running) '05 KIA Sorento SUV russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~