Advise needed please. At higher revs my Pinto was pushing oil back through the plastic push in filler cap. The rocker box has "WESTFIELD" cast into it. The breather down on the block was the usual Ford offset metal can and i had a short RAMAIR filter on its outlet. To cure the problem i have obtained from Burton Power an alloy elbow to go down on the block (ie eliminating the Ford breather box and RAMAIR filter) and a alloy filler cap with a breather outlet. obviously i have connected the two via a suitable length of hose. Question is will i cause engine pressure problems by not having an open outlet anywhere? Do i need a T piece and the RAMAIR filter somewhere in the line? Any thoughts would be very much appreciated. Cheers IB.