Extreme Oil Pressure???

[Rick Parker]

EXTREME OIL PRESSURE AND THE RELATED PROBLEMS HAVE BEEN RECENTLY DISCUSED AT LENGTH BUT I HAVE A SITUATION THAT THAT I WOULD LIKE SOME OPINIONS ON. IN MY 289 THERE ARE RESTRICTORS IN THE OILING SYSTEM BETWEEN THE MAIN BEARINGS AND THE CAM BEARINGS, IN ONE OF THE REAR OIL GALLEYS AND IN THE CROSSOVER PASSAGE AS WELL. CLEARANCES ON RODS WERE .00225 AND MAINS .002-.0025. I HAVE USED IN THE PAST A MELLING HV68 OIL PUMP AND PRIOR TO INSTALLATION DISASSEMBLED IT AND LAPPED THE BODY ON A PIECE OF FLAT GLASS AND A SHEET OF 400 OR FINER GRIT WET OR DRY SANDPAPER. THIS WAS DONE IN AN ATTEMPT TO REDUCE THE CLEARANCES AND "TIGHTEN UP" THE PUMP ITSELF, IN RETROSPECT I MAY HAVE OVERDONE IT. I GOT THE IDEA ORIGINALLY FROM FORD POWER PARTS SEVERAL YEARS AGO AND HAVE USED IT SUCCESSFULLY UNTIL NOW. I HAVE HAD THE CAR OFF THE ROAD FOR VARIOUS MODIFICATIONS, ONE BEING TO CHANGE THE PUMP TO A NEWER MODEL THAT MELLING BROUGHT TO MARKET. IT IS IN THEIR PERFORMANCE LINE AND HAS THE SHAFT THROUGH THE GEROTOR SUPPORTED ON THE BOTTOM TO PREVENT DEFLECTION OF THE INTERNALS AS IT OPERATES. ANYWAY ....I USE A CANTON REMOTE FILTER BLOCK ROUTING THE OIL ABOUT 12" TO THE REAR WITH THE FILTER MOUNTED ON THE FRAME RAIL RUNNING THROUGH #10 HOSES WITH EARL'S FITTINGS . THE HOSES ARE CORRECTLY ATTACHED IE:"OUT" OF THE BLOCK TO "IN" ON THE FILTER MOUNT ETC. I HAVE 80#+ OF PRESSURE CRANKING THE PUMP WITH A DRILL!!!!, ACCORDING TO MELLING THIS PRESSURE IS CORRECT AS THE BYPASS IS SET TO OPERATE AT "ABOUT 80#". I AM CURRENTLY USING A FRAM RACING SHORT FILTER AS MY SPACE IS LIMITED. I AM BEGINING TO WONDER IF THE DESIGN OF THE CANTON BLOCK ADAPTER MAY BE A CONTRIBUTING FACTOR. THE DIAMETER AND HEIGHT OF THE INTERNALS OF THE NEW PUMP AND THE PREVIOUS HIGH VOLUME ONE IS THE SAME. THERE ARE NO KINKS IN THE HOSE OR OTHER OBVIOUS BLOCKAGES. I HAD A FULL LENGTH FORD RACING FILTER ON IT AND OBSERVED THE SAME INDICATED PRESSURE. I'VE CHECKED IT WITH 2 DIFFERENT GAUGES. I'M STUMPED.........YOUR THOUGHTS?????

RICK................