The Offenhauser internal journal has a divider above the intake-plate; and, it has an internal passage that goes from the plate-opening to the side, and then goes from side-to-side; and then, at the other side, it turns and comes back to the other side of the divided intake hole. This is true circulation.
My Fenton intake does not have a divider above the intake-plate. The internal passages do not go to the side, then side-to-side, and then back to middle. Since there is no divider in the middle, under the plate, I think there is no full side-to-side circulation?
You can get water to go in and out of the plate on the Fenton intake, but it does circulate from end-to-end as it does on the Offenhauser.
My Fenton intake is about 5-years old and I bought the Offenhauser intake from Patrick's about 16 years ago.
