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Original Message
Check the back of the block.
By Dave Shoe - 11/05/2001 1:33:33 AM; IP 216.243.158.51
If the back of the block has a large "A" protruding from it, then a rough guess is you can go +.030 with no problem. If it's got a "C" you may be able to go .060" with no problem. These are only rough guidelines based on a limited sampling of blocks I've seen.

You should do a sonic test in order to map out the wall thicknesses around each cylinder. If you find a thin spot (with associated thick spot opposite it), then you might consider an "offset bore" job to preserve the thin side as much as possible.

Shoe.
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Collapse <a href=../ForumFE/reply.aspx?ID=9096&Reply=9096><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9096" onclick="return false;">428 cj bore size maximum?</a>&nbsp;-- <font color=#0000ff>peter, <i>11/04/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9096', contentMargin: 60, icon: $('anchor9096') }); </script>  428 cj bore size maximum? -- peter, 11/04/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9099&Reply=9096><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9099" onclick="return false;">RE: 428 cj bore size maximum?</a>&nbsp;-- <font color=#0000ff>Mel Clark, <i>11/04/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9099', contentMargin: 60, icon: $('anchor9099') }); </script>  RE: 428 cj bore size maximum? -- Mel Clark, 11/04/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9103&Reply=9096><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9103" onclick="return false;">RE: 428 cj bore size maximum?</a>&nbsp;-- <font color=#0000ff>peter, <i>11/04/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9103', contentMargin: 60, icon: $('anchor9103') }); </script>  RE: 428 cj bore size maximum? -- peter, 11/04/2001
Collapse <b>Check the back of the block.</b>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>11/05/2001</i></font>Check the back of the block. -- Dave Shoe, 11/05/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9112&Reply=9096><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9112" onclick="return false;">RE: Check the back of the block.</a>&nbsp;-- <font color=#0000ff>peter, <i>11/05/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9112', contentMargin: 60, icon: $('anchor9112') }); </script>  RE: Check the back of the block. -- peter, 11/05/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9134&Reply=9096><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9134" onclick="return false;">RE: Check the back of the block.</a>&nbsp;-- <font color=#0000ff>Hugo, <i>11/06/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9134', contentMargin: 60, icon: $('anchor9134') }); </script>  RE: Check the back of the block. -- Hugo, 11/06/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9135&Reply=9096><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9135" onclick="return false;">RE: Check the back of the block.</a>&nbsp;-- <font color=#0000ff>peter, <i>11/06/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9135', contentMargin: 60, icon: $('anchor9135') }); </script>  RE: Check the back of the block. -- peter, 11/06/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9137&Reply=9096><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9137" onclick="return false;">RE: Check the back of the block.</a>&nbsp;-- <font color=#0000ff>Bob, <i>11/06/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9137', contentMargin: 60, icon: $('anchor9137') }); </script>  RE: Check the back of the block. -- Bob, 11/06/2001
Collapse <a href=../ForumFE/reply.aspx?ID=9138&Reply=9096><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor9138" onclick="return false;">My 2 cents...worth 1.2 cents American</a>&nbsp;-- <font color=#0000ff>John, <i>11/06/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=9138', contentMargin: 60, icon: $('anchor9138') }); </script>  My 2 cents...worth 1.2 cents American -- John, 11/06/2001
 RE: My 2 cents...worth 1.2 cents American -- peter, 11/07/2001
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