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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='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=MsoNormal><span style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='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=MsoNormal><span style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='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=MsoNormal><span style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='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=MsoNormal><span style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='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=MsoNormal><span style='font-family:"Times New Roman",serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Times New Roman",serif'>Andrew Uprichard<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Times New Roman",serif'>Jackson, Michigan<o:p></o:p></span></p></div></body></html>