| The last set of bearings I put in there are the same grades I have always been using so I wouldn't expect the clearances to be different. I still have the OEM oil cooler bypass. Shimming the relief valve on the pump has made a notable difference in oil pressure above the 4000RPM mark - around 90psi of pressure at 8500RPM. It is my understanding that the oil pressure sending unit is reading what is going into the block. Yes, the oil cooler circuit will open up and divert some of the flow away through the cooler but that orifice to the oil cooler isn't terribly large compared to the volume the pump can move at higher RPMs. I am simply pushing more oil through the cooler as well as through the engine since the oil pressure relief valve isn't opening up as much and reducing pump flow. The pump thus far has shown no sign that it dislikes the additional work. I really contribute the notably less wear on the bearings as a result of the higher weight oil though - it has a much greater ability to keep the bearings afloat.
Enthusiasts soon understand each other. --W. Irving.
Are you an enthusiast? If you are out to describe the truth, leave elegance to the
tailor.
Albert Einstein
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