Jesse, you're right.
No ka's taht hve revved past 7000 have blown up .
but ALL ka's that regularly revved past 7200 HAVE.
reasons?
harmonics.
With a balanced rotating assembly as well as a proper dampening setup on the crank pulley I plan on having a redline of 7400 with the KA24DE i'm building.
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Advocate for the People's Republic of Awesome
rest in peace tim.