I drill two 1/8" holes in the thermostat, and fill the radiator normally. The small holes allow the block to fill when cold. Some folks like to fill the block throught upper radiator hose, an that seems to work too.
MC
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Mark Coffin
#14 GP BSI Racing/Airborn Coatings/The Shop VW
Scirocco
Zephyr Race Coaching and Consulting http://pages.prodigy.net/Scirocco14gp
