[Fot] TR4 standard composite HD thickness?

Larry Young cartravel at pobox.com
Wed Mar 4 13:22:31 MST 2009


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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