Combustion engine intake valve

1. An intake valve for a combustion engine, comprising:

a head portion having a top surface opposite of an underside surface, wherein the underside surface comprises a first angled surface and a second angled surface;

a stem portion extending from the first angled surface of the underside surface;

wherein the top surface is substantially planar and has a beveled edge;

wherein the transition from the first angled surface to the second angled surface is rounded; and

wherein the transition from the second angled surface to the beveled edge is rounded such that a coando effect is produced in an air-fuel mixture flowing from the second angled surface to the top surface to thereby reduce an air pocket size adjacent to the top surface.

2. The intake valve of claim 1 , wherein the underside surface has a plurality of helical grooves.

3. The intake valve of claim 2 , wherein the helical grooves are disposed radially around the stem portion in a counterclockwise direction.

4. The intake valve of claim 2 , wherein the helical grooves are disposed radially around the stem portion in a clockwise direction.

5. The intake valve of claim 2 , wherein each of the plurality of helical grooves is separated by one of a plurality of helical blades.

6. The intake valve of claim 1 , wherein the first angled surface and the second angled surface are sized and dimensioned to mate with a valve seat in a chamber.

7. A method of modifying a stock intake valve, wherein the stock intake valve comprises a head portion having an underside surface that includes a first angled surface, a second angled surface, and a perpendicular surface, wherein the perpendicular surface joins with a top surface at a right angle, the method comprising:

rounding a first edge where the first angled surface and second angled surface meet;

beveling or rounding the right angle to create a beveled edge;

rounding a second edge where the second angled surface and the beveled edge meet;

rounding a third edge where the beveled edge and top surface meet; and

cutting a plurality of helical grooves in the first angled surface.

8. The method of claim 7 , wherein the step of beveling or rounding the right angle comprises the step of cutting material from the right angle at a 45 degree angle.

9. The method of claim 7 , wherein the step of beveling or rounding the right angle comprises the step of cutting material from the right angle at a bevel angle between 30-60 degrees.

10. The method of claim 7 , further comprising the step of polishing the beveled or rounded edge.

11. A method of manufacturing an intake valve comprising:

providing a mold or die having a negative impression of the intake valve, wherein the negative impression comprises a head portion that comprises (i) an underside surface having a first angled surface and a second angled surface that meet at a rounded edge, and (ii) a top surface that joins the second angled surface at a beveled edge, the transition from the second angled surface to the beveled edge being rounded;

using the mold or die to form a head portion of an intake valve.

12. The method of claim 11 , wherein the step of using the mold or die includes the step of compressing a solid material in the mold or die.

13. The method of claim 12 , wherein the solid material is a metal alloy.

14. The method of claim 13 , further comprising the step of heating the metal alloy prior to compressing the metal alloy in the mold or die.

15. The method of claim 11 , wherein the step of using the mold or die includes a casting process.