Originally Posted By: Turbo-6
Yes this is true to a point, cranks actually go through many harmonic zones depending on the RPM.

It's actually torque that tries to break a crank.

So you can apply 900 ft lbs at 5000 and it's safer than like 300 ft lbs at 10,000 RPM.

Ok, we get it. ;\)
Now lets see some pics of the progress on that 12 port install.

MBHD

12 port SDS EFI