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BTW: we have seen cast rockers break on over rev with absolutely no valve contact. At first we thought coil bind, but after inspection we determined that the cause was just stress.
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So have we.
Especially on BIG overrevs. (Telltale tack and reset is out of the driver's reach.)
We had "special" valves in there and some other tricks. Won't get into details as several of our competitors are on this board
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Ever get a measurement on how much force it takes to brake the forged ones versus the cast ones? Just curious.
Jason