Oil modification full flow
- Thread starter habbott
- Start date
Pete Fl/Wi
Senior Member
I have used the MCF on one engine and the 95% on three others. The 8BA engine going in my AV8 will not have any filter. I think with todays oils and changing the oil every 1,000 miles is safe enough.
Pete
Pete
Walt Dupont--Me.
Well-known member
Hi Michael. The guy that owns this engine had it built in NY or somewhere
and it only run about a day an blew up and ruined the block. It took him 10yr's to gathered new parts to rebuild it. He finally brought all the parts to me. I don't know what happened to the original block but the roller cam was alright and the 4-1/8 crank. I don't know what the lifters weight. He brought me double springs with the valve train. I asked him if he had the spec on the Crower roller cam and he gave me some spec it thought he remembered. Clearance and spring pressure. When I got ready set up the valves I hooked up one valve with double springs, it took 2 men and a boy. and the spring pressure was off the scales. I knew it wasn't right. I finally got hold of a guy on the barn that run one of those cams. he said he knew what I mean about those dual springs. The first one he built the spring pressure split the block. He said he talked to Dave Crower and Dave told him those cams were never tested and your on your own. SO the next engine he used the cam with Esky single springs and set them up at 100* pressure. Been drag racing and on the street for 2 years with no problem. I told him it sounded good to me so I set these with the Esky springs and at 100* The guy has been running it must be 7-8 years and love it. Walt
All Ford Canada blocks from about 1940 until end of production in '54 have the inboard vertical passage already drilled and tapped for the military full-flow filter and post-war civilian full flow option that was available until end of '51. The military and post-war civilian option used 3/8" ID hard lines and the 8BA type used 3/8" flexible lines and a larger filter. The horizontal passage was blocked with a special fitting used on the outboard vertical passage that had a permanent thin brass 1 1/4" long tube on the bottom. The tube was long enough to block the horizontal oil passage and allow the pressurized oil to flow to the filter and back to the inboard passage. The brass fitting adapted the 1/4" pipe thread (3/8" ID) to the 3/8" ID hard or soft lines to the filter. If the filter was removed for any reason, the special fitting would have to come out to plug the holes or adapt back to a bypass filter, and no possibility of a plug remaining inside to block circulation. Use of the special fitting meant that the option could be installed easily at the dealership or removed without leaving a potential blockage in place.
No drilling or enlarging of internal passages was necessary. Since the oil pump is a gear drive, metering pump, the same volume of oil is pumped for each revolution of the engine. If a high volume pump is used, the internal passages are still of ample size to pass that volume of oil, so it's doubtful that either pump would be putting out more flow just because the passages or external lines were opened up beyond the 3/8" used by Ford engineers. ..B.
No drilling or enlarging of internal passages was necessary. Since the oil pump is a gear drive, metering pump, the same volume of oil is pumped for each revolution of the engine. If a high volume pump is used, the internal passages are still of ample size to pass that volume of oil, so it's doubtful that either pump would be putting out more flow just because the passages or external lines were opened up beyond the 3/8" used by Ford engineers. ..B.