Quote:
Originally Posted by Will D
If the center tube in the filter canister that goes thru the middle of the filter and is connected to the return line has this 1/16th hole, is that not the essential flow restrictor? Leaving the only reason to having this fitting(as pictured above) with the restrictor hole would be to reduce cannister pressure to prevent leaks?
With a restrictor hole on the inlet to reduce the flow, wouldn't that actually increase pressure in the cannister as well?
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Every stock Ford filter I have seen has the two holes in the center tube and perhaps some early as well as aftermarket filters did not.
Probably a design change to eliminate over pressure in the canister.