It is very possible the oil pump has worn. Section B, pg 37 of the
Shop manual is the section about the oil pump and tolerances. You might be
able to clean up the pump you have or maybe a new pump is the way to go. I
was able to sand the cover to the stated tolerance and I get at least 45 psi
all the time.
Ron Fraser
-----Original Message-----
From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf Of e.coiner@cox.net
Sent: Monday, August 02, 2010 4:43 PM
To: tigers@autox.team.net
Subject: [Tigers] Oil Pressure Part II
I just got my Tiger back on the road after a 3 year hiatus. (ie I was too
cheap to have a fender bender repaired and a repaint)
I have a 260, it makes 180hp at the rear wheels.
I have an aftermarket remote oil filter setup. I use a low profile block
adapter that Dale A. sells The filter is mounted behind the headlight bucket
in the drivers side fender well.
The connection are with -8 AN fittings and SS braided hose.
I have a stock oil pan
Cold oil pressure is 45-50 psi
Warm pressure is 35 psi.
When I come to a stop, the oil pressure will drop to around 10 psi, to the
point I can hear bad mechanical (ie knocking) noises. As soon as the
deceleration is over, the pressure will rise back up to 20 psi or so and the
bad noise stops. Any ideas on what I should do to fix this one?
A separate anecdote that may shed light: A coworker has a 95 Mustang with
the V6. It has over 100k on the clock. He was experiencing low oil
pressure, when the engine would get good and warm. He tried higher
viscosity oil. No change. He replaced the oil pump with a stock unit from
the local parts house. Problem solved. Now has good oil pressure even when
hot. _______________________________________________
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