Align bore.

["T. S. White" <tswrace@pacbell.net>]

To align bore an engine as I understand it the machinist shaves the boss 
on the main cap.  Then the caps are bolted in place and the mains are 
align bored.  This results in mains that take standard bearings.

Michael Marr wrote:
>> Align bore the main bearings
> 
> 
> Why would you want to line bore the mains?  Where would you get the 
> appropriately oversized (on the OD) bearing shells?  Or am I 
> misunderstanding something?
> > 


-- 
        Best Regards,
        Tom