Bob,
I may be confused too (or at least dyslexic!), but wouldn't the key
words below be "assuming the plunger was clean, true, no nicks, burrs,
etc."? Under those circumstances, as well as the signs of possible
hang-ups of the spring, as my spring seemed to show) wouldn't the
plunger be possibly partially open or not being held in place properly
by the spring?.
I often reluctantly admit that I was educated and worked many years as
an engineer, most probably because I have been known to misinterpret the
facts not too infrequently. I may be mixed up here myself, but it seems
that if there is a problem with the proper set-up of the pressure relief
valve, it could open or be open at significantly lower pressures than
90psi.
I presently have one of those feelings this could be one of my
engineering faux pas! Let me know. Hopefully, you or one our esteemed
colleagues will straighten this out.
Regards,
Russ
Bob Spidell wrote:
OK, I'm cornfused. The pressure relief valve is meant to limit maximum
oil pressure, why would it raise idle pressure (assuming the plunger was
clean, true, no nicks, burrs, etc.)? That is, the relief valve should be
closed withing a few psi of the max.
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