portning av toppen kunskap

[Lotus]

läste detta och är lite förundrad

http://en.wikipedia.org/wiki/Cylinder_head_porting

Ruskigt intressant läsning som jag bara var tvungen att dela med mig av

[Tomsan]

det tackar vi för

[flaset]

Ruskigt intressant läsning.....

Man tackar!

[Lotus]

hitta det här oxå

There are many common design and porting strategies to increase flow. Increasing the diameter of the valves to take up as much of the cylinder diameter as possible to increase the flow into the intake and exhaust ports is one method. However, increased valve size can increase valve shrouding (the impedance of flow created by the cylinder wall.) To counteract this, valves are commonly designed to open into the middle of the cylinder (such as the Dodge Hemi or the Ford Cleveland engines with canted valves.)Also, increasing valve lift, or the distance valves are opened into the cylinder or using multiple smaller valves can increase flow.

http://en.wikipedia.org/wiki/Four-st...e#Valve_Timing

Mycket bra sida http://en.wikipedia.org