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Original Message
Lightweight valves
By Travis Miller - 08/03/2004 4:50:50 PM; IP 64.12.116.71
Blinker probably got the idea due to the fact that NHRA allowed Ford to use lightweight valves in certain factory backed Super Stock versions of the 428 SCJ. Select race teams got special heads with the lightweight valves. It did not take long for NHRA to put an extra horsepower rating on the S/S engines with the light valves.

WARNING: Used sodium filled lightweight exhaust valves are dangerous in that they can explode if ever abused such as being hit with a hammer. Another thing to be aware of is used sodium filled exhaust valves have a tendency to snap the head off and destroy an engine. This happens because the sodium when not heated to operating temperature on a regular basis starts eating away at the metal from the inside. There are cases where seldom started restored 427s have dropped a valve when the engine is idling. Spring pressure and a weakened sodium filled valve can spell disaster to your high dollar restored car. I know one guy who had a set of Medium riser 427 heads that popped the head off a valve while the heads sat under his workbench!

Best advice, stay away from lightweight sodium filled exhaust valves for your FE.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=22308&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22308" onclick="return false;">How much hp were lightweight valves worth on a CJ</a>&nbsp;-- <font color=#0000ff>blinker, <i>08/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22308', contentMargin: 60, icon: $('anchor22308') }); </script>  How much hp were lightweight valves worth on a CJ -- blinker, 08/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22313&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22313" onclick="return false;">RE: Nothing.</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>08/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22313', contentMargin: 60, icon: $('anchor22313') }); </script>  RE: Nothing. -- Gerry Proctor, 08/03/2004
Lightweight valves -- Travis Miller, 08/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22316&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22316" onclick="return false;">Why Sodium?</a>&nbsp;-- <font color=#0000ff>Bill Howell, <i>08/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22316', contentMargin: 60, icon: $('anchor22316') }); </script>  Why Sodium? -- Bill Howell, 08/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22317&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22317" onclick="return false;">Interesting Question</a>&nbsp;-- <font color=#0000ff>John, <i>08/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22317', contentMargin: 60, icon: $('anchor22317') }); </script>  Interesting Question -- John, 08/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22318&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22318" onclick="return false;">RE: Interesting Question</a>&nbsp;-- <font color=#0000ff>Travis Miller, <i>08/03/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22318', contentMargin: 60, icon: $('anchor22318') }); </script>  RE: Interesting Question -- Travis Miller, 08/03/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22320&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22320" onclick="return false;">Does this means</a>&nbsp;-- <font color=#0000ff>pop428, <i>08/04/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22320', contentMargin: 60, icon: $('anchor22320') }); </script>  Does this means -- pop428, 08/04/2004
 My problem is my CJ has them -- blinker, 08/04/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22323&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22323" onclick="return false;">RE: To the contrary.</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>08/04/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22323', contentMargin: 60, icon: $('anchor22323') }); </script>  RE: To the contrary. -- Gerry Proctor, 08/04/2004
 I have a full set of NOS light weights : ( n/m. -- pop428, 08/04/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22328&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22328" onclick="return false;">RE: To the contrary.</a>&nbsp;-- <font color=#0000ff>Travis Miller, <i>08/04/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22328', contentMargin: 60, icon: $('anchor22328') }); </script>  RE: To the contrary. -- Travis Miller, 08/04/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22331&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22331" onclick="return false;">RE: Replace the guide.</a>&nbsp;-- <font color=#0000ff>Gerry Proctor, <i>08/05/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22331', contentMargin: 60, icon: $('anchor22331') }); </script>  RE: Replace the guide. -- Gerry Proctor, 08/05/2004
Collapse <a href=../ForumFE/reply.aspx?ID=22350&Reply=22308><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor22350" onclick="return false;">ABout how long does it take to..</a>&nbsp;-- <font color=#0000ff>blinker, <i>08/06/2004</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=22350', contentMargin: 60, icon: $('anchor22350') }); </script>  ABout how long does it take to.. -- blinker, 08/06/2004
 RE: ABout how long does it take to.. -- blinker, 08/06/2004
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