11-05-2021, 05:20 PM
Seven pistons came in a myriad patterns. That one seems to have 3 comp rings. And the relief below the 3rd is unnecessarily generous. Drillings need only break into the relief. The part below oil ring should be of reduced dia. Times have changed but piston types can be mixed, provided all weigh the same. Solid skirt pistons should be of reduced dia across the gudgeon dia as Austin originals, not fully circular. Tight gudgeons are a recipe for failed little end screws.
Vernier callipers and use of offer scope for many errors. Digital readouts give a false sense of super accuracy. Can be used locked with feelers as comparators.
On a vehicle which does not ping broken lands are unusual, and often done during assembly. I dunno if anything can be deduced from the angle of the breaks
Vernier callipers and use of offer scope for many errors. Digital readouts give a false sense of super accuracy. Can be used locked with feelers as comparators.
On a vehicle which does not ping broken lands are unusual, and often done during assembly. I dunno if anything can be deduced from the angle of the breaks