[quote=olddog;1095024]Was the block honed by a precision machine?
In the Sealed Power test lab - decidedly yes.
10-12rpm at what condition? WOT high rpm?
Just "in general" - they drifted around but did rotate. I don't have access to the data anymore (corporate execution) but suspect that rotation would diminish at WOT with higher pressure loading
Do they rotate at idle and normal driving conditions (say 2000 rpm 30 hp)?
Yes
Does the top and 2nd ring rotate the same direction and speed, thus the gaps always stay at a fixed angle from each other?
No - everything is independant
Do the
oil rings rotate?
Don't know. Don't think they instrumented that. Might have since.
3 piece
oil ring?
Yes - SS50U
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Engine Masters Challenge Entries
91 octane - single 4bbl - mufflers
2008 - 429 cid FE HR - 675HP
2007 - 429 cid FE MR - 659HP
2006 - 434 cid FE MR - 678HP
2005 - 505 cid FE MR - 752HP