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