Quote Originally Posted by techinspector1
I'm not certain, but I think that balancer is Chinese-made and I wouldn't trust it any further than I could throw it. If you don't need an aftermarket SFI 18.1 balancer for drag racing, then just get a good stock balancer and double-key it. Here's a good source....
http://www.damperdoctor.com/

If you mean Erson, it is now part of the Mr. Gasket conglomerate. I wouldn't hesitate to use any of their products.
Over 99% of the time I agree with what Richard says but not this time.
I would never run a stock balancer with a roots style supercharger.
You will rip the outer ring right of the inner ring because the interia ring will break away.
Either buy a crank hub or buy the a very good ATI SFI approved supercharger balancer.
The lower priced Romac supercharger balancers will also work.