Postby Nightrunner » 20 May 2008 17:30
I hope this is ancient history but I had one of the adapters as shown in Humaniod's pic. Got it from Moss motors. This was back in the late 1980's. When I held it in place without the bolt, I could tell that the smaller O-ring was not going to be compressed at all. In fact there was a gap. The design obviously requires that two O-rings be compessed to form the proper seals. With no pressure (actually a small gap) on the center one, the oil would mostly bypass the filter and you'd never know it. I measured as best I could and had a machine shop turn down the outer edge enough so that both O-rings would compress when the bolt was tightened. I called Moss and talked to their tech guy. He was aware of the problem and had little else to say about it! That was 20 years ago. I only hope they fixed it eventually. But I would go with the one pictured in Jclay's post or I would check the Moss style unit very carefully when installing it to make sure it forms two tight seals. FWIW
Scott
