<html><head></head><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:16px"><div>Does not matter the age of the gauge. (rhyme?) You need to put a calibrated gauge inline with the oil pressure gauge. Only way to tell the true oil pressure.</div><div dir="ltr">Mike MacLean<br></div><div id="yui_3_16_0_ym19_1_1491189753274_4672"><span> </span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: times new roman, new york, times, serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Sunday, April 2, 2017 8:15 PM, Roger Grace <roggrace@telus.net> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv9447531646">
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<div>Just started my BJ8 after a long Winter project on OD and other
things.</div>
<div>Only engine work done was to change oil pan gasket.</div>
<div>New oil and new filter. VR1 20-50 oil.</div>
<div>When starting from cold oil pressure regulates to around 60 psi. You can
see it regulating.</div>
<div>As soon as it starts to warm up (about 10 mins running) pressure gets very
hi and follows RPM to about 100 psi at 2000 RPM. Pressure gauge is almost like a
tacho !</div>
<div>Today pulled the relief valve (not a trivial task as have oil cooler pipes
obstructing) and inspected.</div>
<div>Looks OK apart from a few scuffs on the valve; there is a small washer
behind the spring by PO.</div>
<div>Spring free length is 2.3 ins plus 0.1 for washer</div>
<div>Suspecting the filter, changed it too.</div>
<div>Oil gauge is but 12 months old.</div>
<div>Prior to this oil pressure behaved normally; and this is a recently rebuilt
engine with about 5k mi</div>
<div>At my wits end and need some ideas please.</div>
<div>rg</div>
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