| My workshop manual says to orient the pistons according to a 1/32" split in  
the skirt.  My new pistons have no such split, nor did the old ones, and  
there is no indication on the crown of the piston as to how these should be  
oriented relative to the bearing caps, etc.  The old ones were marked STD  with 
86MM bores, so I assume they were TR4, and the new ones are  87MM.   Can 
someone 
shed some light on this?
TIA 
 
David  Lylis
69 TR6 CC26160L
60 TR3A TS74461LO
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