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- Nov 26, 2009
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I first heard about a reed valve breather being used on a Norton back in the mid 1980s when Leo Goff mounted one on his Champion 750 140mph dragster. I think this info was printed in the "Norton News" monthly of the time. So I called him up and asked for details. He said it would save some HP. I went to Napa auto and ordered the parts for my road racer. I plumbed up the bottom of the sump with the petal reed valve and ran a clear hose to the oil tank. When I started it up I was pleased to see excess oil pump through the hose up to the oil tank - another of many tricks I experimented with in my search for more power. To my knowledge we were probably the only two who had adapted reed valves to the Norton sump back then. But there was no commercial interest at the time so thats as far as it went. Now you see them all over this forum. Just a reminder that Leo was the 1st and deserves credit for it and a thank you for the help and advice he provided. Below is one plumbing option for blowing excess oil out of the lower rear sump - with Steve Maney or stock Combat cases.