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Mike Graham · 01-08-2015, 10:46 AM

Here is my sad story and question. I ordered a duplicate set of pistons for my SS motor from Brand x. They missed the dish cc by one full cc. After months of discussions they agreed to fix them. Instead of milling the dish deeper they plunge cut a semi-circle that intersects with the dish. This changes the shape of the dish dramatically.
Does anyone have any direct knowledge of how closely NHRA tech stays to the rule that the dish must remain the original shape? Especially at Indy.
Thanks

01-08-2015, 10:46 AM	#1
Mike Graham Member Join Date: Jul 2002 Posts: 410 Likes: 1 Liked 341 Times in 67 Posts	SS piston dish Here is my sad story and question. I ordered a duplicate set of pistons for my SS motor from Brand x. They missed the dish cc by one full cc. After months of discussions they agreed to fix them. Instead of milling the dish deeper they plunge cut a semi-circle that intersects with the dish. This changes the shape of the dish dramatically. Does anyone have any direct knowledge of how closely NHRA tech stays to the rule that the dish must remain the original shape? Especially at Indy. Thanks