[Overkillphil]

We saw quite a few failed balancers of various makes over the years come into our shop that were not torqued to 160 ft lbs.

A common theme coincidently was that they were torqued with a typical standard 150# torque wrench. As the owners found out, tweaking it to the max. setting or a tad past don't make it accurate.

[goathead455]

The shop that I bought my PP street balancer from said the SFI ones were junk.
The hub was very tight on the crank,I didn't end up using it because the RARE billet pullies didn't fit on it.
I ended up getting a Pioneer balancer and it fit just like a factory piece.

[Dave Bisschop]

Harry, I didn't say every one I sold had an issue, I've checked a few that are our there running on engines close to me here and most have been fine, just too many have spun so I'd rather avoid a potential problem for my customers.

Good point Overkillphil, pretty much any cracked keyway can be blamed on inadequate torque on the crank bolt. Gotta love the facial expression we all make torquing these things on!! LOL