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Original Message
A question of balance
By Kevin - 03/27/2002 2:27:37 AM; IP 207.102.191.58
While the crank could certainly have come from a Shelby, it's highly unlikely it was a '68 KR. And aside from the usual caution that any engine not 100% factory original (and most of those too!) should be balanced anyway, Salid points out another valid concern.

Ford used not only the heavier Le Mans 'clone' C9ZZ rod, but also different pistons (in both 692 and 712 gram weights) and much thicker, heavier wrist pins in the SCJ motors.

They also used different flexplates or flywheels than did the regular CJs, and a special counter-weighted crank spacer behind the vibration dampner.

There's nothing a good machinist can't 'neutralize', but these parts are definitely 'match', not 'mix'!
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=12240&Reply=12240><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12240" onclick="return false;">428 crank difference</a>&nbsp;-- <font color=#0000ff>410cougar, <i>03/25/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12240', contentMargin: 60, icon: $('anchor12240') }); </script>  428 crank difference -- 410cougar, 03/25/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12246&Reply=12240><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12246" onclick="return false;">RE: 428 crank difference</a>&nbsp;-- <font color=#0000ff>mustangoldtimer, <i>03/25/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12246', contentMargin: 60, icon: $('anchor12246') }); </script>  RE: 428 crank difference -- mustangoldtimer, 03/25/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12251&Reply=12240><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12251" onclick="return false;">RE: 428 crank difference</a>&nbsp;-- <font color=#0000ff>410cougar, <i>03/26/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12251', contentMargin: 60, icon: $('anchor12251') }); </script>  RE: 428 crank difference -- 410cougar, 03/26/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12268&Reply=12240><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12268" onclick="return false;">RE: 428 crank difference</a>&nbsp;-- <font color=#0000ff>salid, <i>03/26/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12268', contentMargin: 60, icon: $('anchor12268') }); </script>  RE: 428 crank difference -- salid, 03/26/2002
Collapse <b>A question of balance</b>&nbsp;-- <font color=#0000ff>Kevin, <i>03/27/2002</i></font>A question of balance -- Kevin, 03/27/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12274&Reply=12240><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12274" onclick="return false;">Actually, CJ and SCJ pistons are identical.</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>03/27/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12274', contentMargin: 60, icon: $('anchor12274') }); </script>  Actually, CJ and SCJ pistons are identical. -- Dave Shoe, 03/27/2002
 RE: Actually, CJ and SCJ pistons are identical. -- Derek, 03/28/2002
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