Anyone have a stock S4 exhaust valve pref bent? Will you go cut it open about 1/2" above the valve
03-01-2005, 07:31 AM
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Anyone have a stock S4 exhaust valve pref bent? Will you go cut it open about 1/2" above the valve
<center><img src="http://66.134.70.69/files/audi/misc/exhaust_valve.JPG"></center><p>
and post pictures of what it looks like?
and post pictures of what it looks like?
03-01-2005, 11:08 AM
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no, it's the "splashing" motion of the liquid sodium which does the work....
the sodium inside the hollow valve melts. When the valve opens, the sodium splashes down into the valve head and collects heat. Then, when the valve closes, the sodium splashes up into the valve stem. Heat transfers out of the sodium, into the stem, valve guide, and engine coolant. In this way, the valve is cooled.
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