[QUOTE]Originally posted by pat mccarthy
[B]
Originally posted by kitz
I didn't look at any pictures. I thought it was common knowledge that blowers require double keyways on the crank.

this quote right here could be bebated stock key ways 4130 steel crank fluidampr 548 7500rpm over 4 years stock keyways
Yes Pat, we understand you have done it with one key. It could also be argued that you can buzz a cast crank to 7,500 and get away with it. But it's just like everything else, you might get away with it and you might not. All I was saying is that Blower Drive Service recommends 2 keyways and that's good enough for me, 'cause they've built a few more blower motors than I have.