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Mart · 06-05-2011, 05:05 PM

The way the oil pump is set up in the flathead, the oil pump feeds the rear main directly. The rest of the engine is fed from the gallery. When you tap into the gallery and introduce a full flow filtering system, you filter the supply to everything except the rear main. Because not everything gets filtered oil, it's dubbed a 95% system. It's not an exact number, just a name.

On the subject of the bypass filter: I'm sorry I do not have a pic of my restricted fitting.

Mart.

06-05-2011, 05:05 PM	#108
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,755	Re: Engine seized 2 miles after rebuild The way the oil pump is set up in the flathead, the oil pump feeds the rear main directly. The rest of the engine is fed from the gallery. When you tap into the gallery and introduce a full flow filtering system, you filter the supply to everything except the rear main. Because not everything gets filtered oil, it's dubbed a 95% system. It's not an exact number, just a name. On the subject of the bypass filter: I'm sorry I do not have a pic of my restricted fitting. Mart.