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406 Oil Pressure Relief valve
By Bo Fabre - 07/08/2003 10:52:52 AM; IP 152.163.195.204
Just fired up fresh rebuild on a 63 model 406 engine and and found oil pressure to be low, approx 20-25 cold idle, as low as 10-15 hot. Never saw pressure above 45 psi at any speed hot or cold. This is with high volume pump, 8 quart pan and fresh everything, crank turned 10-10, new bearings etc,etc. All clearences were checked and within specs.This block is equipped with the pressure releif valve at rear of main oil galley. Has anyone experienced problems with this valve causing low pressure? Used original spring that was with valve, could this spring be weak causing valve to releive early? Any thoughts or comments on what could be causing low pressure?
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Collapse <b>406 Oil Pressure Relief valve</b>&nbsp;-- <font color=#0000ff>Bo Fabre, <i>07/08/2003</i></font>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 <a href=../ForumFE/reply.aspx?ID=17731&Reply=17712><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17731" onclick="return false;">Looks like the relief valve is installed wrong.</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>07/09/2003</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=17731', contentMargin: 60, icon: $('anchor17731') }); </script>  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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