SS piston dish

[SSDiv6]

Originally Posted by Mike Graham

The application is a low compression 460 Ford with a 15 cc dish. The dish is like a sideways D. The dish was too shallow by about .005. The "fix" was to plunge cut what I can only describe as a secondary valve relief near the intake relief. The cut is perpendicular to the piston top and half into the quench area. As you know this is a canted valve motor so this cut looks mighty strange. Now the flat side of the D has a bubble in it. Mechanically I don't see any problem, but visually it is obviously different.
The dish is correct depth and correct cc.
Don't have access to camera at this time.

Is the plunge cut part of the valve relief? If it is, It could be considered as part of the valve relief.