[quote="Michaelplunket":3jmy0ddp]Alvis silver crest , engine oil leaking at crankshaft in to bell housing and clutch,is there a workshop manual with drawings available showing layout of oil thrower ring and or seal ? Has any member experience of correct assembly order ,[/quote:3jmy0ddp] 20/3/15 Now have engine disassembled and discovered that there isn't an oil seal in the design , There is an oil thrower screw machined in to the crankshaft and it relies on minimal clearance on crankcase and sump to stop oil going out when engine running ,it looks like gaskets on sump should not be used , just silicone or curill which never really setts hard , Will update as I go Regards Michael Posted by Michaelplunket 20/03/2015 19:14:06