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Original Message
CJ versus MR
By Royce Peterson - 03/21/2002 7:00:34 AM; IP 205.188.200.145
The Medium Riser intake port is a little wider and the port lower opening is higher allowing a straighter shot from intake to valve for the incoming charge. As Dave Shoe pointed out, even though the ports don't line up perfectly Ford used the Medium Riser intake design on the Cobra Jet cast iron intake. The 1967 - 1970 428 Police interceptor engines also used this intake manifold design (in aluminum) with small port C7AE-A and C8AE-H heads which means the head port opening was smaller than the intake port. Again the benefits outweighed the problems caused by a port mismatch.

Royce Peterson
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Collapse <a href=../ForumFE/reply.aspx?ID=12116&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12116" onclick="return false;">Large port 390 heads - Anyone know the REAL story?</a>&nbsp;-- <font color=#0000ff>Derek, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12116', contentMargin: 60, icon: $('anchor12116') }); </script>  Large port 390 heads - Anyone know the REAL story? -- Derek, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12118&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12118" onclick="return false;">Here's my opinion.</a>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12118', contentMargin: 60, icon: $('anchor12118') }); </script>  Here's my opinion. -- Royce Peterson, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12127&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12127" onclick="return false;">RE:Head games...</a>&nbsp;-- <font color=#0000ff>Mike McQuesten, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12127', contentMargin: 60, icon: $('anchor12127') }); </script>  RE:Head games... -- Mike McQuesten, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12132&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12132" onclick="return false;">Small runner FE heads first appeared in 1966.</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>03/20/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12132', contentMargin: 60, icon: $('anchor12132') }); </script>  Small runner FE heads first appeared in 1966. -- Dave Shoe, 03/20/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12153&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12153" onclick="return false;">Other questions...Other myths.</a>&nbsp;-- <font color=#0000ff>Derek, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12153', contentMargin: 60, icon: $('anchor12153') }); </script>  Other questions...Other myths. -- Derek, 03/21/2002
Collapse <b>CJ versus MR</b>&nbsp;-- <font color=#0000ff>Royce Peterson, <i>03/21/2002</i></font>CJ versus MR -- Royce Peterson, 03/21/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12161&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12161" onclick="return false;">RE: CJ versus MR</a>&nbsp;-- <font color=#0000ff>Joel, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12161', contentMargin: 60, icon: $('anchor12161') }); </script>  RE: CJ versus MR -- Joel, 03/21/2002
 RE: CJ versus MR -- Royce Peterson, 03/21/2002
 RE: Other questions...Other myths. -- Bob, 03/21/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12168&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12168" onclick="return false;">RE:early '52/'32 solid engines</a>&nbsp;-- <font color=#0000ff>Mike McQuesten, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12168', contentMargin: 60, icon: $('anchor12168') }); </script>  RE:early '52/'32 solid engines -- Mike McQuesten, 03/21/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12173&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12173" onclick="return false;">RE:early '52/'32 solid engines</a>&nbsp;-- <font color=#0000ff>Bob, <i>03/21/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12173', contentMargin: 60, icon: $('anchor12173') }); </script>  RE:early '52/'32 solid engines -- Bob, 03/21/2002
 Info from the grey matter zone.... -- kevin, 03/22/2002
Collapse <a href=../ForumFE/reply.aspx?ID=12224&Reply=12116><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor12224" onclick="return false;">RE:'Shell' vs. 'Dumbbell</a>&nbsp;-- <font color=#0000ff>Derek, <i>03/25/2002</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=12224', contentMargin: 60, icon: $('anchor12224') }); </script>  RE:'Shell' vs. 'Dumbbell -- Derek, 03/25/2002
 RE:Dazed & Confused -- Mike McQuesten, 03/25/2002
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