12-08-2010, 07:57 PM
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,533
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[quote=Barry_R;1095025]
Quote:
Originally Posted by olddog
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 |
Very interesting - it would have been interesting to have instrumented the other rings too. |