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.
The valve is probably binding.
Kees Oudesluijs
Op 3-5-2018 om 08:08 schreef Corning, Dan (D.C.):
> 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.
> 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.
> 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?
> Any ideas that might help me pinpoint the concern?
> Best,
>
> Dan Corning
>
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