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Here ya go. By Dave Shoe - 01/08/2004 8:03:01 AM; IP 216.243.176.34 For a complete drill bit test, you've got to pop all six core plugs out of the block and feeler gauge hihgand low into ALL core plug holes using the shank of a drill bit. Since drill bit sets containing all 64th inch sizes are readily available and cheap, I use drill bit shanks to make the measurement instead of pin gauges. Note that: 330/332/352/360/361Edsel/390/410 blocks frequently have 17/64" or 18/64" as the largest gap on the entire block. 361FT/391/406/428 blocks frequently have 13/64" or 14/64" as the largest gap on the entire block. 427 blocks frequently have maybe 8/64" as the largest gap, but I've never yet probed an entire 427 block, so that info is preliminary. Actually, all the info is preliminary, but it seems to hold up fairly well. Also, I only speak in 64ths, to let you know the resolution requirements. If I stated 3/16" instead of 12/64", you'd have no idea whether my drill bit set only checked every 16th", or 32nd", or 64th". Note that checking the gap sorta-kinda verifies which size of water jacket sand cores were stuffed into the mold, but does not verify core shift isn't a problem. Once the drill bit "screening test" passes, the block needs to be sonic mapped to verify the core shift will permit boring without developing thin areas. Reference these posts which popped up in a search of "drill bit test": http://jcoconsulting.com/forumfe/reply.aspx?ID=16629&Reply=16617 http://www.jcoconsulting.com/ForumFE/reply.aspx?ID=17938&Reply=17933 Shoe.

This thread, so far...

Skip Navigation Links.  Cyl Wall Thickness Test -- Tim P., 01/08/2004 Here ya go. -- Dave Shoe, 01/08/2004  RE: Here ya go. -- BarryMcLarty, 01/08/2004  It'd work, but I prefer drill bits. -- Dave Shoe, 01/08/2004  RE: Here ya go. -- Tim P., 01/08/2004  RE: Here ya go. -- BarryMcLarty, 01/08/2004  Actually, my purpose is a bit different than some. -- Dave Shoe, 01/08/2004  RE: Actually, my purpose is a bit different than some. -- Paul Garvin, 01/09/2004  Wall thickness -- Steve M, 01/12/2004  RE: Actually, my purpose is a bit different than some. -- bear, 01/17/2004  Here are a couple of references. -- Dave Shoe, 01/27/2004  RE: Here ya go. -- Tim P., 01/26/2004  RE: Here ya go. -- Tim P., 01/29/2004  Sounds like a nice block. -- Dave Shoe, 01/29/2004  RE: Sounds like a nice block. -- Tim P., 01/29/2004  The "X" remains a mystery. -- Dave Shoe, 01/30/2004  RE: The "X" remains a mystery. -- Tim P., 01/30/2004

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