Originally Posted by foreigneRS
i figured that cosworth had the centre rib cast in there for a reason, as it would obviously increase the cost, so i just knife edged the 2 ends of it.
Have you pictures of the interior manifold, please ?
I understand that the one and fourth cylinders is poor in air. Perhaps to reduce the charge in Elbow and to reduce the cost, two aluminum tabs could be welded in the oblong part of the end of the duct in order to encourage the replenishment of the cylinders 1 and 4. With an dremel, the tab on the elbow will be supressed.