I plan to make a template and just use a drill bit like I used on the oil pump gears for the dimples. For the texture I plan to use a Dremel engraving bit

 

Some trick **** going on in here

 

So dimpling the piston is done in an effort to what? Create a better burn where there is a fatter mixture? I would be nervous of creating hot spots in the chamber that could lead to detonation.

If it worked dont you think you'd see stuff like this on professional drag race vehicles?

 

Intake ports are dimpled to induce turbulence and better mix the air/fuel but never seen it on the piston top before.

 

The golf ball ports are wild... you certainly pay to play in that arena. People are proud of em.

 

If there are super rich wet vortices right where the plug is it can cause the spark plug to have a hard time firing...by "blowing" out the spark from the high swirl and being very wet. I already tightened my quench up by using a .041" head gasket. (Might as well make use of the quench pad on the piston since it's not a full dish) So my intent is to not create a better burn where the mixture is rich but to make a more even mixture in the chamber as a whole. A more even mixture means faster burn, lower exhaust/chamber temps, less timing needed and more power. I highly doubt dimples will lead to hot spots or cause detonation by nature of their shape.

I don't know of any professional race teams that give away their secrets. This may or may not be one of them. I figure what the heck why not give it a try.


I figured why not since the piston crown counts for 50% of the combustion chamber.

 

What is your final quench gonna be with a .041 gasket

 

Average for the pistons is .003" below deck so roughly .044" quench

 

Ok. Ya, mines .046

 

Its cool that you are willing to try so many different ideas that are not very common. But increasing swirl and tumble incorrectly could have the exact opposite effect you are looking for