AC in MI.
07-13-2003 10:01:29
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Re: Re: Re: NAPA 1101 Oil Filter in reply to steve, 07-13-2003 05:56:08
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that may be true, but remember the discussion is about low gauge readings after installing an oil filter, and low gauge reading means (because of where the gauge is) higher oil resrictions in the oil line going to the oil filter, head and governor....according to ALLIS CHALMERS "as long as the resistence in this oil line is below 15lbs oil will flow to the head and governor"...and if the oil filter resistence is higher to the head, and governor more oil will be going to the cam, and main bearings ( the rod bearing are not pressure oiled, they are fed through oil holes drilled in the cam that sprays oil on the big ends of the rods, the rod are drilled with funneled holes that the oil can just run in)...also, any oil that goes past the oil pump pressure relief valve is (and i quote AC) "when the oil relief valve is open the extra oil passing the valve is discharged into the camshaft and augments the supply through the camshaft metering holes. Under normal operation the bypass valve is nearly always open as the pump is capable of creating more than 15lbs. pressure"...So here's my bottom line, if you put on a more restrictive oil filter, the gauge will show a drop in (readable) pressure, but more oil will be going to the cam , main bearings and spraying on the rod bearings...If the gauge is reading (any,whithin reason)pressure than you are getting enough oil to the head (rocker arm assembly), and the governor and timing gears...less oil to the top end means more oil to the bottom, just ask any chevy oval track racer why they resrict oil to to the top...but remember the chevy gauge reads off the main oil galley, unlike an old AC
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