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<p>Is that swarf I see on the spring? If so there is a big problem.
Basically a full rebuild after carefully cleaning out all oil ways
and passages.</p>
<p>The valve is probably binding.<br>
</p>
<p>Kees Oudesluijs</p>
<p><br>
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<div class="moz-cite-prefix">Op 3-5-2018 om 08:08 schreef Corning,
Dan (D.C.):<br>
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<div>I’m trying to diagnose why my BT7s oil pressure too high
after rebuilding the engine. With the spark plugs removed,
engine cranking oil pressure builds to 90 PSI. I did
install a high capacity oil pump from Healey Surgeons but I
don’t think that is the
root of the issue. I’ve never started the engine after the
rebuild and won’t until I get this resolved.</div>
<div><font size="2" face="Calibri"><span
style="font-size:11pt;"> </span></font></div>
<div>Looking through the archives for similar problems led to
the possibility the oil pressure relief return port was
covered during the rebuild, blocking the return of oil to
the sump. To test this, I pulled the oil pressure relief
valve and spring, put the
plug back in and cranked the engine. The cranking oil
pressure dropped significantly, low enough that it didn’t
register on the gauge. If I’m correct, that eliminates the
return port as the problem because if they WERE plugged, the
oil return still would
have been blocked and the pressure would have still been
high. I suspect it’s now more likely the pressure relief
valve is sticking in the bore or simply too much spring
pressure keeping the valve closed. </div>
<div><font size="2" face="Calibri"><span
style="font-size:11pt;"> </span></font></div>
<div>I trial fitted the pressure relief valve back in the
engine bore and didn’t feel any binding although the valve
did have some scoring. Reviewing each component, I noticed
the spring fits nicely inside the back side of the pressure
relief valve but does
not fit INTO the cavity inside the plug. (see photo) Is it
possible I have the wrong plug? Maybe switched the oil pan
plug with the pressure relief plug forcing the spring too
far into the pressure relief bore?</div>
<div><font size="2" face="Calibri"><span
style="font-size:11pt;"> </span></font></div>
<div>Any ideas that might help me pinpoint the concern?</div>
<div><font size="2" face="Calibri"><span
style="font-size:11pt;"> </span></font></div>
<div><img src="cid:1D5B352CD92E664897BD860685CC7B31@ford.com"
moz-do-not-send="true"> </div>
<div>Best,<font face="Calibri"> </font></div>
<div><font face="Calibri"><br>
<font face="Lucida Bright">Dan Corning</font></font></div>
<div><font size="2" face="Calibri"><span
style="font-size:11pt;"> </span></font></div>
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