In a message dated 96-10-21 17:22:39 EDT, wise@ses.com (Tim Wise) writes:

<< 
 Also, someone mentioned a blown head gasket would cause water hoses to 
 break due to increased pressure. Why? I've notice no decrease in performance

 or watery exhaust, though I have the common Vanagon water leak from the
 cyclinder heads that I've temporarily stopped up with AlumaSeal.
 
 All responses appreciated. Thanks!
  >>
It seems that somthing is over pressurizing the system to cause repeated hose
failures.  A swollen expansion tank is another cause of concern.  Something
is wrong.  Also check cooling fan operation and have a leakdown test
performed on the engine.  It is possible to have combustion gases enter the
cooling system without a noticeable los of coolant or performance.

Dennis