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Having (I think) sorted out the problem with the TR4, I took a
recently-finished TR3B out for its second inaugural drive.
The first inaugural drive went pretty well, but once the engine temp came
up, the oil pressure fell like a stone - and here we are talking around
40psi at 3000rpm and almost nothing at (what was hot) idle. Adjusting the
pressure with the screw on the oil filter head did nothing.
I checked everything over, even pulled the oil pan and checked all the
bearings (one main and 4 rods) - all perfect. I really didn't find
anything, and the specs on the oil pump looked good, but I ordered a new
pump as well as a new spring for the Purolator oil filter head (the valve
itself is no longer obtainable).
So today when I first took it out, the pressure was almost too high - around
90 at 3000 rpm. But as soon as the engine warmed up, it again dropped to
scary levels. No leaks, no oil in water or vice versa.
I am running out of ideas here. Could it be a bad oil filter head?
Anything else?
Andrew Uprichard
Jackson, Michigan
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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Times New Roman",serif'>Having (I think) sorted =
out the problem with the TR4, I took a recently-finished TR3B out for =
its second inaugural drive.<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New Roman",serif'>The first inaugural drive =
went pretty well, but once the engine temp came up, the oil pressure =
fell like a stone – and here we are talking around 40psi at =
3000rpm and almost nothing at (what was hot) idle. Adjusting the =
pressure with the screw on the oil filter head did =
nothing.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New Roman",serif'>I checked everything over, =
even pulled the oil pan and checked all the bearings (one main and 4 =
rods) – all perfect. I really didn’t find anything, =
and the specs on the oil pump looked good, but I ordered a new pump as =
well as a new spring for the Purolator oil filter head (the valve itself =
is no longer obtainable).<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-family:"Times New =
Roman",serif'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New Roman",serif'>So today when I first took =
it out, the pressure was almost too high – around 90 at 3000 =
rpm. But as soon as the engine warmed up, it again dropped to =
scary levels. No leaks, no oil in water or vice =
versa.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New Roman",serif'>I am running out of ideas =
here. Could it be a bad oil filter head? Anything =
else?<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New =
Roman",serif'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New Roman",serif'>Andrew =
Uprichard<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Times New Roman",serif'>Jackson, =
Michigan<o:p></o:p></span></p></div></body></html>
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