<VV> REAR ENGINE HOUSING OIL LEAK?

[Arlette Pat]

Hi everyone,
 
I have just read with interest an article written by Milton Binon that has been reproduced on the CORSA Corvair Techinical Guide. Mitlon discusses a problem with oil leaking from the rear engine housing on almost every Corvair engine he has ever seen.
 
He goes on to explain that he only successfully fixed this oil leak after taking the rear engine housing to a welding shop and having the welding shop people 'Heli-Ar weld the hole' shut. The hole, that leaks its seems is where the shaft that holds the driven gear is located. 
 
The engine for our Corvair is rebuilt, completely reassembled and almost ready to reinstall. It looks better than brand new as it sits bolted to the engine standard
 
My concerned is however that in this rebuild I did nothing to the rear engine housing, apart from a detailed cleaning and the use of new gaskets I did nothing else to it. 
 
After reading Milton's advice I am seriously thinking that I should perhaps back track, remove this rear engine housing and have it welded shut so that I can avoid a future oil leak that from all accounts occurs on almost every Corvair engine. Its unfortunate as I feel I am going over previous work but it seems if I don't that my nice clean engine will not be clean for very long after its first start.
 
Has anyone had experience with this issue?
 
Hope everyone has a great Christmas and New Year.
 
CARL L. KELSEN
RHD 1965 CORVAIR MONZA CONVERTIBLE
Melbourne, Victoria, Australia