A couple of years ago, I spent a whole day trying to measure this under
torque (retired engineer with too much time). I first measured the
distance of piston to the deck. I then used the old idea of clay on top
of the piston to determine piston to head clearance. I discovered that
clay is a bit springy and found that plastigage works better. I
determined 0.050" is a pretty good number, but I would put a plus or
minus 0.002. This was for the standard Payen composite gasket.
Larry Young
Michael Porter wrote:
> Tony Drews wrote:
>> 0.045" judging by the one on my workbench.
>>
>
> On the workbench? How about under torque? :)
>
> Seems to me it would be a bit less with pressure applied.
>
>
> Cheers.
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