Paul,
There's no advantage to using the uprated spring for normal driving.
Although Mae West is credited with saying that "Too much of a good thing
is never enough", that's not necessarily true of oil pressure.
Since it takes a certain amount of power to pump the oil, it takes
more power to pump it harder (agaist more resistance = pressure) .
Enough, per the book, will do just fine.
60-65 psi at revs with hot 20-50 may be indicating some wear on the
big-end bearings. Nothing to worry about now, however, maybe next winter.
Bob
> This reminds me of a question I always wanted to ask
> the list:
>
> What is the theroetical (and real) advantage of
> fitting the uprated oil pressure relief spring? It
> ups the oil pressure, yes, but if the engine is
> fundamentally healthy anyway, it there any advantage
> to doing it? I have good oil pressure (once warm,
> it's about 25 psi at idle and about 60-65 with any
> revs on), so would the uprated spring do anything good
> for the engine?
>
> Thanks in advance,
>
> =====
> Paul Misencik - 1971 MGB - www.sopwithracing.com
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