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216 ByPass Filter Drain
#1251996 Mon Jan 22 2018 02:53 AM
Joined: Mar 2002
Posts: 9,035
Master Gabster
I have read that the outlet of the bypass filter on the 216 empties into the crankcase. Well on my 1951 216, this is not the case. The fitting where the filter outlet attached to actually leads to the low pressure side of the oil distributor valve.

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Re: 216 ByPass Filter Drain
truckernix #1252001 Mon Jan 22 2018 03:32 AM
Joined: Feb 2004
Posts: 21,240
In that case, the only time much filtering is going on is at idle, or other times when the oil distributor is at least partially closed. Once the pressures are close to equal on both sides of the distribution valve, little if any flow will get through the filter. I wonder if that's another way to assure the rods and mains get enough oil flow to stay lubed? Full pressure engines do drain the filter back to the oil pan through a port to the pan rail and a notch in the pan gasket.

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