05-04-2023, 08:30 AM
Like Peter Arnold, I followed forum advise and on the Ruby, made the sump and bottom of crankcase surfaces spotlessly clean before using
a silicon gasket. Also made sure to tighten bolts as evenly as possible but taking care not to tighten too much, this is just a location joint and certainly not a mechanical one. That combined with an alloy sump makes an oil tight joint. But, cries anyone who has parked next to it in a pub car park, whence comes all that oil? The valve guides cannot be perfect, there was leakage from the valve chest cover until I put on a cover with a breather pipe, there is now gentle but continuing emission from the breather pipe. Morgan owning pals with old JAPs tell me that Austin Seven engines are as tight as a South Morningside auntie's purse, so not to worry about a pint or two.
Old Dave, tickover might not tell you a great deal, serious revs can be quite different.
a silicon gasket. Also made sure to tighten bolts as evenly as possible but taking care not to tighten too much, this is just a location joint and certainly not a mechanical one. That combined with an alloy sump makes an oil tight joint. But, cries anyone who has parked next to it in a pub car park, whence comes all that oil? The valve guides cannot be perfect, there was leakage from the valve chest cover until I put on a cover with a breather pipe, there is now gentle but continuing emission from the breather pipe. Morgan owning pals with old JAPs tell me that Austin Seven engines are as tight as a South Morningside auntie's purse, so not to worry about a pint or two.
Old Dave, tickover might not tell you a great deal, serious revs can be quite different.