They certainly still exist, in every engine I'm familiar with. However,
the design in the TRs is pretty good, it rarely 'sticks' open and almost
never closed. Misadjustment and a tired spring are much more common
problems.
Randall - who once had to pull a Chevy engine just because of a stuck
open bypass.
On Wednesday, August 04, 1999 3:57 PM, Jim [SMTP:jdeatsc1@rochester.rr.com]
wrote:
>
> I have to ask this.
> Back in the Dark Ages ( I know, I know) we had things called "Oil
Pressure Relief
> Valves) and they, dratted devices, used to cause LOW oil pressure in that
they
> would stick open, and HIGH oil pressure in that they would stick closed.
> Do these critters still exist?
> If so, are they still troublesome?
>
> Jim
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