I had my 131 ohv cylinder head rebuilt last month , because in a typical service the oil filler cup was removed and the engineer saw a "white cream" below the cup which he claimed to be sign for blown gasket .
He removed the cylinder head and noticed that the gasket's metal rings (where the gasket surrounds the combustion chamber's ports) were torn,on the other hand the block itself was in relatively good condition .As a result my head was polished with new valve seals inserted , valves were refined too and a complete cylinder head gasket set was installed.
After 60 miles since the c/ head rebuilt i removed the oil filler cup again myself .To my surprise i noticed signs of this white cream again.I drive immediately the car to the garage again and i showed the filler cup to the engineer . He claimed that it will let some vapour pass through for the first runs , he also claimed that is common for this type of engines to leave few moisture appearing below the cup
.As you may already know in the oil filler's neck there is also the oil fume port that leads to the carb through a black rubber hose .
Is this a reasonable explanation or am i facing a new head gasket blown again ?
Another odd thing is that i noticed very few oil glimpsing where the block attaches the cylinder head.
The explanation again was it will let few drops to glimpse in this point until it drains
Can anyone helps .. do i have to worry about for a new rebuilt after only 80 miles ?
Or is this common in the beginning