I'm quite surprised the gauge tap is upstream of the filter.
Does this mean an engine could have a clogged, collapsed or otherwise
restrictive filter
while the Oil pressure gauge says all is OK ? Come to think of it, if the
connection is as you indicate, a clogged filter might actually show an
increase in Oil pressure!
Great Scott!
Bob W.
-----Original Message-----
From: Randall Young [mailto:randallyoung@earthlink.net]
Sent: Wednesday, November 10, 1999 4:02 PM
To: 'Barry Schwartz'; triumphs@autox.team.net
Subject: RE: Lubricants
Actually, on the TR2/3/4 engines, it taps in _before_ the filter. This is
probably a leftover from the TR2/early 3, which had bypass type filters,
where the filter output went into the pan.
Randall
59 TR3A daily driver
> -----Original Message-----
> From: Barry Schwartz
>
> FWIW. . .
> The oil pressure sender "tap" is (on almost every engine I've seen
> including the TR variety) directly in the oil galleries to the main
> bearings just after the pressure relief valve AND any filtering (spin
> on/cannister type). It's a pretty accurate measurement of oil bearing
> pressure at the mains and the camshaft journals.
>
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