I wonder if the shape changes to something different everytime the torque plate
or head is applied.
perhaps the variations may 'stack up' against you.
perhaps the 'perfect' part minimizes this chance.
only conjecture on part. no data.
joe
>I may be misunderstanding this, but the whole idea of a torque plate
>is to get a cylindrical shape when the head is torqued. a repeatable
>measured shape with no pressure applied doesn't seem as important as
>the shape under clamping pressure.
>
>On Nov 8, 2008, at 5:24 PM, N197TR4@cs.com wrote:
>
>> FOT,
>>
>> I have a torque plate, but also have a fixture inspired by our
>> production methods at John Deere.
>>
>> It controls the shape at the skirt.
>>
>> Using the torque plate drove us bonkers getting repeatability.
>>
>> The fixture means that we start with dimensional stability of the
>> liner, at the time of assembly. What happens to the liner after the
>> head goes on, I dont know, but this method has my confidence.
>>
>> The torque plate is available for borrowing, IF ANY FOT WANTS TO USE
>> IT.
>>
>> The fixture and process equipment is also available for your use and
>> I have no financial interest in it's operation. I can help coordinate.
>>
>> Joe Alexander
>>
>>
>>
>>> Having had this happen to a couple of engines...I invested in a
>>> torque plate !
>>> The liner will go into a "hourglass" shape when compresse. Never
>>> had a problem
>>> since >
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