TR-6 piston clearance

["Steve Sutton" <ssutton@ridgecrest.ca.us>]

Does anyone know what the piston clearance should be on a freshly 
bored TR-6?  The Bentley manual is not all that clear on the subject; 
gives lots of specs,i.e.  piston grades F, G & H  major diameters, bore 
sizes, etc. From that info I calculated a piston wall clearance in a 
stock motor to be between .0025" - .0028".  This looks a little on 
the 'tight' side for a motor of this vintage, I was expecting .004" 
or so.  

Anyone out there have a 'definiatve' answer?

Thanks  
Steve Sutton
74 1/2 TR-6
Ridgecrest, CA
ssutton@ridgecrest.ca.us  <--- Note: New address