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Cannister Type Partial Flow Oil Filter

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The restrictor is on the inlet side.  That keeps the pressure down in the canister to prevent big leaks from the lid.  The restrictor is 0.045” to 0.060” diameter.  Flow at 30 psig indicated will be a quart or two per minute when hot. 

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On a Pierce, it’s a smaller orifice. But the engine that uses the bypass filter is earlier.

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31 minutes ago, Ben Bruce aka First Born said:

Buick Straight Eight has the orifice fitting in the right front corner of the head.  Filter outlet. Interesting that engineers saw things differently.  .060 in size.




They are ALL crazy..........

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