>>
>>
>>	Tracey,
>>	On Type IVs there's a thermostat on the bottom of the engine
>>that drives a couple of flaps at the top to control the flow of
>>cooling air. I think your 72 has an 'upright' Type II motor, which
>>may or may not differ from a Type I. I just bought the Bay Window/Breadloaf/
>>68-79 Bus Bentley book and I'll look-up thermostats tonight.
>>
>>	Thermostats are popularly left off aircooled engines by 
>>silly people who assume that more cooling is always better- which makes
>>it hard for the engine to warm up, blah, blah.
>>
>>	My 914 came without a thermostat and I installed one, but
>>I can't say I noticed any difference. It just made me feel better :-)
>>
>>	Bill
>>

Bill:

You are wearing your cylinders fast when driving with cool engine. Fast warm
up is a must to reduce cylinder wear.

David Kao
83 Westy, 84 Vanagon
dkao@eng.sun.com