11-07-2019, 09:30 AM
Thanks for responses. John Barlow only has blanks in stock and is not sure when he will be able to get them machined. Petrol pump leaks are not unusual. Before I put this rebuilt engine back in, I took care on the bench to make sure both faces were clean and compatible, so far this has remained tight.
Ruairidh, I've got used to cork seals slowly giving up and needing replaced almost annualy. The o rings, advised on the forum, don't seem to last any longer. This leak slowly increased over the last month or so. Putting new o ring on last week has limited the leakage visibly to the rear bottom, but it is still far from tight. That is why I was thinking that that the rigid ali cover might be the solution. Certainly there were no original pressed tin tappet covers visible under bonnets at Shelsley on Sunday!
Ruairidh, I've got used to cork seals slowly giving up and needing replaced almost annualy. The o rings, advised on the forum, don't seem to last any longer. This leak slowly increased over the last month or so. Putting new o ring on last week has limited the leakage visibly to the rear bottom, but it is still far from tight. That is why I was thinking that that the rigid ali cover might be the solution. Certainly there were no original pressed tin tappet covers visible under bonnets at Shelsley on Sunday!