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Original Message
Looks like the relief valve is installed wrong.
By Dave Shoe - 07/09/2003 1:13:28 AM; IP 216.243.176.34
I agree, the relief valve appears to be improperly installed.

The block relief valve in the 406 is supposed to regulate the engine's oil pressure, and the standard bypass valve in the oil pump is specially calibrated extra high to only permit bypassing at the pump when the oil is cold and thick.

Lotsa folk defeat the block pressure regulator by locking it in the shut-off position and then install an ordinary performance oil pump in the block, relocating engine oil pressure regulation to the standard location inside the pump. Either "stock" or "defeated" seems to work well if the oiling system is well planned out.

It sounds like you'll be pulling a flywheel soon. Be sure to take care that the reinstalled oil plug is properly sealed, as these suckers can leak at the darndest times if care is not taken.

Shoe.
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Collapse <a href=../ForumFE/reply.aspx?ID=17712&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17712" onclick="return false;">406 Oil Pressure Relief valve</a>&nbsp;-- <font color=#0000ff>Bo Fabre, <i>07/08/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17712', contentMargin: 60, icon: $('anchor17712') }); </script>  406 Oil Pressure Relief valve -- Bo Fabre, 07/08/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17715&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17715" onclick="return false;">RE: 406 Oil Pressure Relief valve</a>&nbsp;-- <font color=#0000ff>Al Phillips, <i>07/08/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17715', contentMargin: 60, icon: $('anchor17715') }); </script>  RE: 406 Oil Pressure Relief valve -- Al Phillips, 07/08/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17717&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17717" onclick="return false;">RE: 406 Oil Pressure Relief valve</a>&nbsp;-- <font color=#0000ff>John Saxon, <i>07/08/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17717', contentMargin: 60, icon: $('anchor17717') }); </script>  RE: 406 Oil Pressure Relief valve -- John Saxon, 07/08/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17718&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17718" onclick="return false;">RE: 406 Oil Pressure Relief valve</a>&nbsp;-- <font color=#0000ff>John Saxon, <i>07/08/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17718', contentMargin: 60, icon: $('anchor17718') }); </script>  RE: 406 Oil Pressure Relief valve -- John Saxon, 07/08/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17721&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17721" onclick="return false;">RE: 406 Oil Pressure Relief valve</a>&nbsp;-- <font color=#0000ff>Bo Fabre, <i>07/08/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17721', contentMargin: 60, icon: $('anchor17721') }); </script>  RE: 406 Oil Pressure Relief valve -- Bo Fabre, 07/08/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17730&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17730" onclick="return false;">RE: 406 Oil Pressure Relief valve</a>&nbsp;-- <font color=#0000ff>John Saxon, <i>07/09/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17730', contentMargin: 60, icon: $('anchor17730') }); </script>  RE: 406 Oil Pressure Relief valve -- John Saxon, 07/09/2003
Collapse <b>Looks like the relief valve is installed wrong.</b>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>07/09/2003</i></font>Looks like the relief valve is installed wrong. -- Dave Shoe, 07/09/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17736&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17736" onclick="return false;">RE: Looks like the relief valve is installed wrong.</a>&nbsp;-- <font color=#0000ff>John Saxon, <i>07/09/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17736', contentMargin: 60, icon: $('anchor17736') }); </script>  RE: Looks like the relief valve is installed wrong. -- John Saxon, 07/09/2003
 RE: Looks like the relief valve is installed wrong. -- Bo Fabre, 07/09/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17738&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17738" onclick="return false;">RE: Looks like the relief valve is installed wrong.</a>&nbsp;-- <font color=#0000ff>Bo Fabre, <i>07/09/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17738', contentMargin: 60, icon: $('anchor17738') }); </script>  RE: Looks like the relief valve is installed wrong. -- Bo Fabre, 07/09/2003
 You gotta fix that. -- Dave Shoe, 07/09/2003
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