Cb450 torsion bar wear?

[joevirus563]

How to know that the torsion bar is passed limit?

How much preload you should apply to it? Would a set of torsion bar have less preload on it?

When I push real hard on the intake one I can open them slightly. Exhaust one are fine.

 

[Flugtechnik]

There is an installation torque spec. I can't remember what it is and I'm pretty sure I lost my spec sheets. It may be in the Honda service manual.

From what I understand, it is possible for them to loose their stiffness over time. If they are out of spec, I guess you either have to find another one or do the "grind off a tooth" mod.