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Nascar valve spring @7000rpm
#2
that's some crazy witchcraft and magic right thurr! i had always thought it was just a simple up/down thing, no extra movement. i guess that second inner spring helps keep oscillations down, which makes the physics of the whole thing even more amazing.

good grief i can't imagine an F1 spring. even a honda engine revving to 9K.....i'll just concentrate on the pretty noises they make and forget about the fact that the springs are dancing around Confusedhock:
2010 Civic Si
2019 4Runner TRD Off-Road
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Past:  03 Xterra SE 4x4  |  05 Impreza 2.5RS  |  99.5 A4 Quattro 1.8T  |  01 Accord EX  |  90 Maxima GXE  |  96 Explorer XLT
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