Valve springs

A

aircop

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Joined
Apr 30, 2007
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I'm installing studs and valve springs in the next week or so. I'm wondering do valve springs need to be broke in, or are they ready to go right out of the box.
 
aircop said:
I'm installing studs and valve springs in the next week or so. I'm wondering do valve springs need to be broke in, or are they ready to go right out of the box.
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When I installed my HD springs, I was told to give them 3 heat cycles before moving the truck. Then reset the valvelash before driving it.
 
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