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That's OK Paul - I too trust the judgement of those who design and or have bulk experience. And of course it's much more complex than that - (there's been no discussion on elasticity or dynamics to this point, and I'm certainly not qualified to launch that one...) I'm just trying to increae my knowledge/experience as I go.
So the question remains....if the running clearance just increases with increasing temperature, why not run with zero cold clearance for a nice quiet engine with extended duration as the bonus???
John
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