Originally Posted by
PLR
No problem , i don`t understand how you and 67hardtop or anyone else that clicks would arrive at that conclusion .
It may seem simple to you both but i think there is a lot more to understand than has been put here .
If it was clear cut all the information would be layed out easily accessed easily found and understood , there would be nothing to question or search .
When things are not clear cut that is when , in my opinion there is a need to spend some time with it and i quite enjoy learning things , specially when i had accepted and given little thought to it .
I agree that things are as simple as you let them be if that`s how you both mean it .
Ok, to simplify it a bit.
Alloy engine components are made by mixing aluminium with other metals, to create a material with certain properties, in the case, the ability to handle a certain level of heat and pressure whilst retaining its rigidity.
If it gets too hot, the properties change, meaning it may lose some of it's rigidity.
This is what they are measuring for with the hardness test. If the head is not hard enough, it won't retain its rigidity.
They do not damage the head by testing it. The test gives an indication of how hard (rigid) the head is. Below a certain level, and it's a lottery whether or not the head will be useful any more
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You have the right to remain silent. Anything you say will be misquoted, then used against you.
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1999 Disco TD5 ("Bluey")
1996 Disco 300 TDi ("Slo-Mo")
1995 P38A 4.6 HSE ("The Limo")
1966 No 5 Trailer (ARN 173 075) soon to be camper
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