Quote:
Originally Posted by OrbitalEllipses
Yup. It should be at least grade what, 8.8? All the shit on my car is grade 10.9 anyway. Do I need that much yield strength? No. Do I want that much yield strength? Yes.
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You want to be careful with upgrading bolts on your own. A good manufacturer will take into account all the factors of the hardware they provide. One of those things is bolt stretch when torqued down. This affects how well the bolt holds in place when tightened down. Another is that they have to take into account what happens if you over-torque. Better to snap a bolt you can get out with the right tools than to strip a tapped hole because the bolt you used is stronger than what they designed around and end up having to heli-coil a blower, especially when there might not be room to drill the hole out.
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