Hi;  I am replacing my waterpump and thermostat in my 1984 GL.  Since the
coolant lines are so long from the engine to the radiator I am thinking
about drilling a 1/8" hole in the thermstat's mounting flange to assist in
bleeding the air from the system more quickly.  This is an idea that I
have taken from my experience with mopar 2.2 and 2.5 4 cyl engines, which
are prone to air lock problems in the top of the cylinders.  The 1/8" hole
doesn't affect engine operation and makes a big difference in getting rid
of the last bit of air.  Any reason not to do this with my 1.9L Vanagon
engine?

Best Regards
Howard Allen
S. Portland, Maine

"Don't tread on me."