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<p>resistance. This process is called <a href="page.php?w=cylinder_head_porting">porting</a>, and it can be done by hand or with a <a href="page.php?w=CNC">CNC</a> machine.</p>

<p><big> Waste heat recovery of an internal combustion engine </big></p>
<p>An internal combustion engine is on average capable of converting only 40-45% of supplied energy into mechanical work. A large part of the waste energy is in the form of heat that is released to the environment through coolant, fins, etc. If somehow waste heat could be captured and turned to mechanical energy,</p><p>
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