In a message dated 16/09/2009 7:29:50 P.M. Eastern Daylight Time,
LISTSERV@GERRY.VANAGON.COM writes:

        Right on !  This SMALL  problem is the cause of improper cooling
even after a new waterpump has been  installed.  If the engine case has been
ground away where the impeller  tried to grind its way through the case when
the bearing goes bad, the  tolerance between the case and the impeller will
reduce the efficiency of the  new pump.  You have to fix that !  Not easy
but can be done with JB  weld and masking tape as a dam.  Then sand flat with
whatever you can get  in there with.  I have a small eclectic sander the
works well for this  tedious job !

>>>>Something to keep in mind if you're reusing the  current engine block -
if, due to bad bearings, the water pump is spinning  at an angle, the
impeller will rub against and wear the block, increasing  the tolerance
and decreasing the efficiency of the new pump if allowed to  go on for
long.<<<<<

Cheers,

Frank  Condelli
Almonte, Ontario, Canada
'87 Westy & Lionel Trains (_Collection for sale_
(http://frankcondelli.com/trainsal.htm) )
_Frank Condelli &  Associates_ (http://frankcondelli.com/busindex.html)  -
Vanagon/Vanagon Westfalia Service in the Ottawa Valley
_Vanagon Stainless Steel Exhaust  Systems_
(http://frankcondelli.com/exhaust.htm)
_BusFusion_ (http://www.busfusion.com/)  a VW Camper  camping event,
Almonte, ON, June 11 ~ 14,  2009